Celeste was one of the most acclaimed games of 2018, but what you may not have known is that the tightly designed platformer was an expanded version of a smaller project developed in four days at a game jam. Maddy Thorson and Noel Berry created the original Celeste for the Pico-8 platform, and now that version has a sequel called Celeste 2: Lani’s Trek.
The developers, now including composer Lena Raine, say that this game took just three days to make. The release is to celebrate the third anniversary of Celeste’s release.
We said we probably wouldn’t make a sequel to Celeste, but we never said anything about Celeste Classic
— Maddy Thorson (@MaddyThorson) January 26, 2021
If you’re not familiar with Pico-8, it’s a “virtual console” that gives developers a framework to build games as if it were actual hardware with defined technical capabilities. Games are limited to 128 x 128 resolution, for example, and a specific 16-color palette, which results in a distinctive look. Games can be accessed through the Pico-8 front end itself or distributed separately.
In Celeste 2’s case, you can download Windows, Mac, Linux, and Raspberry Pi versions for free from Itch.io, or play it in your browser at that link. (I would strongly recommend using a controller, since the keyboard controls are… tricky.) The soundtrack is also available on Bandcamp.
Hitman 3 just launched, and IO Interactive’s latest stealth assassination sandbox game has garnered high ratings from many publications — PC Gamer gives it a 90, for example. But what sort of hardware do you need to run the game properly? We’ve grabbed a copy from the Epic Games Store, downloaded all 55GB, and set about running some benchmarks.
Anyone familiar with the past two Hitman releases will be right at home with the launcher, which includes a couple of built-in benchmarks if you go into the Options screen. The graphics options also look pretty much the same as before. There are ten main settings, plus super sampling — aka, supersampling anti-aliasing (SSAA). You should probably leave this off on most GPUs, or at most, use it very sparingly. Setting SSAA to 2.0 effectively quadruples the number of pixels the game renders before downsampling to your selected resolution, so running at 4K with SSAA at 2.0 is the same as running at 8K. If you have a 1080p display, though, it might be worth enabling. The remaining settings cover the usual gamut of texture quality, shadows, reflections, and a few other miscellaneous items. We’ll discuss those in more detail below.
We did some initial testing with both the Dartmoor and Dubai benchmark sequences, ultimately opting for Dubai as it feels a bit more representative of what you’ll actually experience in the game. The Dartmoor test is more demanding and features a lot of physics and particle simulations, but for a stealth game, we don’t think most people are concerned with pulling out a pair of machine guns and laying waste to an empty mansion. The Dubai sequence consists of various camera angles from the game’s first mission, which has NPC crowds but no explosions. Dartmoor might be useful as a worst-case view of performance, but it also stutters quite a lot during the first ten seconds while the level is still loading.
Image 1 of 3
Image 2 of 3
Image 3 of 3
We’ve defined our own ‘medium’ and ‘ultra’ settings for our testing, and we test at 1080p, 1440p, and 4K on both. Medium has everything at medium where applicable, plus anisotropic filtering at 4x, variable rate shading at performance, and simulation quality at base. Ultra just maxes out all of the settings, except for super sampling, as noted above. Interestingly, there’s no DirectX 11 option this time — it’s all DX12, all the time. On the previous two games, DX12 did help performance on most GPUs, and it definitely helped fps at lower resolutions and settings. IOI seems ready to ditch the old DX11 option and focus solely on DX12, and as we’ll see in a moment, performance hits relatively high frame rates.
Our test PC, for now, consists of a Core i9-9900K running on an MSI MEG Z390 ACE motherboard with 2x16GB Corsair DDR4-3600 CL16 memory. We’ve grabbed the latest AMD and Nvidia GPUs for starters, but we’ll look at adding more GPUs and some additional CPU tests soon. (Updated with RTX 20-series GPUs now. More to come!)
Hitman 3 has some sort of partnership with Intel this time, but it sounds like it’s focused on CPU optimizations rather than GPU enhancements. Unfortunately, the extra ‘Intel sauce’ doesn’t show up in the settings menu, and the details of what Intel has helped with are rather vague. Eight-core and higher CPUs may show some extra details, and Xe Graphics might have a few extras as well. Based on what we’ve seen so far with AMD and Nvidia GPUs, the Intel collaboration might be more for future updates (Intel discrete graphics is mentioned at the end of the video, for example).
Hitman 3 Graphics Benchmarks
Starting at 1080p, whether you’re running medium quality or ultra quality, performance isn’t going to be a problem with any of the RTX 30-series or RX 6000-series graphics cards. Even the RTX 20-series cards, from the 2060 up, skate past 1080p with nary a hiccup.
Interestingly, AMD’s GPUs all have a clear performance lead, despite being CPU limited. Nvidia’s GPUs all max out at around 220-230 fps at medium and 190-200 fps at ultra, while AMD’s GPUs hit 270 fps and 230-235 fps. AMD did release new 21.1.1 drivers that are game ready for Hitman 3, but we did a few initial tests with 20.12.1 drivers, and performance wasn’t all that different (a few percent slower at most).
Regardless, we need to step up the resolution if we’re going to tax these modern GPUs. We’ll add additional commentary once we’ve tested with some mainstream and budget GPUs as well.
Running at 1440p, the RTX 3060 Ti still reaches 132 fps at ultra quality, so discussions about what GPUs run Hitman 3 best are still largely academic. The RTX 2060 also breaks 60 fps, sitting at 81 fps. Basically, if you have a high-end graphics card from the past two generations, you should be fine, and most of the GPUs (RTX 3070 and above) average 144 fps or more — perfect if you have one of the best gaming monitors. If if you can’t quite break 144 fps, using a G-Sync or FreeSync display should smooth out the occasional stutters.
Looking at the individual cards, the RTX 3090 barely drops at all going from 1080p to 1440p, while the other GPUs lose anywhere from 5 percent (6900 XT) to 30 percent (3060 Ti) of their 1080p performance. That’s pretty typical, and the drop corresponds to whether a particular setup is more CPU or more GPU limited.
Wrapping up with 4K testing, the RTX 3060 Ti still breaks 60 fps at 4K ultra, along with the 2080 Super. Anything below that mark struggles a bit, though even the RTX 2060 is still playable at 42 fps. Based on what we’ve seen so far, Hitman 3 isn’t nearly as demanding as some other games — at least, not in this initial release.
Meanwhile, the AMD vs. Nvidia comparisons continue to favor AMD by quite a lot, at least on the latest generation GPUs. Well, they’re favored based on the theory that the suggested prices on the various GPUs are anything remotely close to reality (which they’re not right now). Nvidia narrows the gap at 4K, but the RX 6800 XT is still faster than the RTX 3090, and the RX 6800 is nipping at the heels of the RTX 3080 and easily stays ahead of the RTX 3070.
We’ll be running some GTX 16-series and RX 5000-series benchmarks next to see how last-gen GPUs stack up in the near future. Based on what we’ve seen so far, Hitman 3 isn’t nearly as demanding as some other games — at least, not in this initial release.
Hitman 3: Future Updates Planned
That last bit is important. Hitman 3 is already a very nice looking game, but IOI plans to update the game with additional features, including ray tracing support, in the coming months. However, it’s not clear when the DirectX Raytracing (DXR) update will arrive — or if it will even make the game look all that different.
One of the big benefits of ray tracing is the ability to do “proper” reflections and lighting. Most games fake shadows, reflections, and other elements using various graphics techniques, but Hitman 3 goes beyond straight SSR (screen space reflections) in some areas. For example, it was a nice surprise to see Agent 47 and his surroundings properly reflected in building windows right at the start of the first level. Bathroom mirrors also work properly. But other reflective surfaces only do SSR, meaning they can only reflect what’s visible on the screen.
There are some compromises with the mirrored reflections, though. They appear to run at half the target resolution, which means there’s a lot of aliasing present. That’s a bit odd, as it shouldn’t be hard to run an AA post-processing filter to improve the look. Still, after seeing so many reflective surfaces in other games that don’t accurately model things (I’m looking at you, Cyberpunk 2077, with your lack of V reflections), at least Hitman 3 attempts to bridge the gap between SSR and full ray traced reflections.
The thing is, Hitman 3 already looks good right now, and if the choice comes down to improved reflections and shadows but performance plummets, most people will be happier with higher fps. Or maybe IOI is waiting for Intel’s high-end Xe HPG solution that will also support ray tracing, in which case it might be late 2021 before we get the patch. For now, the game runs well and looks very pretty. If your PC could handle the previous two Hitman games, it should still be fine for this third chapter that concludes the current story arc.
One service with 15 messaging applications. It is not a dream but the new platform of the former CEO of Pebble. It’s called Feeber and gathers all messaging services (even iMessage) in one place. The price? 10 $ per month.
by Bruno Mucciarelli published 22 January 2021 , at 10: 41 in the web channel Whatsapp Telegram Facebook Slack Skype Instagram
Eric Migicovsky, is the former CEO and founder of Pebble, the company born a few decades ago and which gave birth to successful smartwatches with e-Paper display. The developer announced on Twitter the launch of Beeper or its new “ jewel ”: a universal messaging app that allows you to merge up to 15 different services , including iMessage, thanks to the open source protocol Matrix and not only. A solution that many are looking for to simplify the use of messages and that Beeper seems to do well even if paying well 10 $ per month.
Beeper: how the system works ” unifier ”?
Beeper meanwhile it is not a real news if not its name. In this case, in fact, before today, the platform was called NovaChat . From today, however, it is available as a Beeper and can be downloaded on request for both Windows and for macOS, Linux, iOS and Android . As mentioned, however, at least at the moment, one needs to fill out a form to receive an invitation, as it is still an almost Beta phase of the system.
But Beeper’s potential looks interesting. From the official website it is possible to observe how the application is capable of supporting up to 15 messaging systems such as: WhatsApp, Facebook Messenger, iMessage, Android Messages ( SMS), Telegram, Twitter, Slack, Hangouts, Instagram, Skype, IRC, Matrix, Discord, Signal and Beeper network. Yes, that iMessage is also among the services that can be replicated on Beeper, and this is perhaps the most striking novelty of the new service because so far no one had ever made such a thing possible since iMessage is a proprietary service of Apple but above all because it works only and exclusively on the ecosystem Apple.
How does it work? There is a little trick devised by the former CEO of Pebble. Migicovsky in fact allows iMessage to work also on Windows, Linux and Android if the user has a Mac that is always connected to the Internet so that it can function as a bridge. Alternatively, the software house already has recycled “jailbroken” iPhones ready , on which the Beeper app is installed, which it will send to users and which will allow access to the service. In all this Beeper costs 10 dollars per month although it is not clear if an iPhone is also included in the price.
Finally, you should know that all the various bridges needed to unify the various messaging services through the Matrix network are distributed for free on GitHub. This way the developers can host the backend on their servers. But be careful because the Beeper app is not open source, but it is possible to use Element, the Matrix open source client.
Follow us on our Instagram channel, lots of news coming !
AMD’s new drivers bring official support for the Quake II RTX and Hitman 3, the latter of which promises to improve performance at its best 10%.
AMD has released new drivers for its graphics cards and APUs. Radeon Software Adrenalin 2020 Edition 21 1.1 drivers are available for Windows 7 and 10 operating systems and support graphics cards and APUs based on the company’s GCN and RDNA architectures.
The most significant updates to Radeon Software 21 1.1 drivers are official support for Hitman 3 and Quake II RTX games. According to the release bulletin, drivers will improve performance in Hitman 3 at its best 10% 4K resolution with Ultra settings when using a Radeon RX 6800 XT and the previous . 12 .1 drivers.
As usual, the drivers have also fixed issues with previous releases. This time, bugged bugs include possible crashes of Doom Eternal when Steam Overlay is enabled, possible problems with the Samsung Odyssey G9 display 5120 × 1440 resolution, and 240 at the Hertz refresh rate, and in GTA V, in some cases, lost reflections when the Reflection MSAA setting is enabled. Known issues include occasional Metro Exodus crashes when beam tracking is enabled, possible screen flicker when MSI’s Afterburner is enabled, and flickering in some applications and games when Radeon FreeSync is enabled if the program is set to borderless full screen mode. You can review all driver changes in their release notes.
The Arche is well-built and beautifully designed in its simplicity, and is a great choice if you’re after a high quality DAC for your headphones, but if you’re using the Arche in your main setup, stick with the XLR outputs, as the RCA alternatives are sporadically noisy.
For
Beautiful, solid design
Exceptional isolation from USB noise
Can tune headphone output impedance
Against
Inconsistent RCA noise levels
No fixed line output level setting
Aus Hi-Fi mag review
This review and test originally appeared in Australian Hi-Fi magazine, one of What Hi-Fi?’s sister titles from Down Under. Click here for more information about Australian Hi-Fi, including links to buy individual digital editions and details on how to subscribe.
French company Focal makes loudspeakers and headphones. Some of its headphones are pretty high-end. As are some of its loudspeakers. So the company has lately taken to producing high-end electronics to drive them.
For example, the Focal Astral 16 A/V processor and amplifier runs to more than AU$30,000. Here we’re spending some time with the more modestly priced Focal Arche DAC and headphone amplifier.
The best DACs you can buy right now: USB, portable and desktop DACs
Equipment
In one way the Focal Arche looks very different. It comes with a curved section of metal. The straighter end has a home amongst the heat sink slots on top of the unit. Install it there and it forms a stylish headphone stand for your Focal (or other) headphones.
Apart from that, the layout of the unit is fairly conventional for this kind of product: deeper than it is wide, a flat well-built (over 4kg) slab of electronics.
On the front is a blue-on-black display screen. To its left is a 6.35mm stereo headphone socket. And to the left of that is a 4-pin XLR socket for balanced headphones. To the right of the display is a combination rotary control/press button. The principal use of that is for output level and switching the unit in and out of standby. But it also invokes the main menu, in which turning the wheel takes you through the options.
On the back panel are the line outputs: a pair of unbalanced RCA sockets and a pair of balanced XLR sockets. The inputs are also at the back. There’s a USB Type-B for plugging into your computer, an optical digital audio input, a coaxial digital audio input and a pair of RCA sockets for analogue inputs.
The USB Type-A socket is only there for upgrading the firmware of the unit. As we write, the Focal Arche is on its original factory-installed firmware and no newer version is available for download. The regular digital audio inputs support PCM up to 192kHz sampling with 24-bits of resolution.
With a connection to a computer via USB, the unit supports PCM with up to 384kHz sampling and 24-bits of resolution and Direct Stream Digital in regular, double and quad speed versions (i.e. DSD64, DSD128 and DSD256). The driver objected to 32-bit audio. For Windows, it’s best to choose the ASIO driver rather than WASAPI. The latter worked with everything except for DSD256.
Every time I tried DSD256 with the WASAPI driver, not only did no sound come through, but it broke something in the driver, requiring a reboot of my computer before the DAC would produce any sound at all (with any format).
The Focal Arche employs dual AK4490 DAC chips for digital to analogue decoding. These are specified to support sampling rates up to 768kHz, use up to 32x oversampling, use 32-bits of resolution, offer five filter curves and run with a THD+Noise figure of 112dB.
The Class-A headphone amplifier is dual-mono and is rated at 2x one watt at 1kHz for impedances less than 32Ω. The frequency response is specified at 10Hz to 100kHz, S/N ratio at 116dB and THD at less than 0.001%. No additional criteria are provided for those numbers. I guess that these specs are for the amplifier alone. (16-bit PCM is going to bottom-out at a signal-to-noise ratio of around 97dBA for example.)
In the settings menu the unit can be set to ‘Low’ or ‘High’ gain and an amplifier mode can be selected for each of the current model Focal headphones, plus there are non-Focal settings labelled ‘Voltage’ and ‘Hybrid’. There was a definite mechanical click from within the unit when switching from some settings to others, suggesting to me that there’s a relay doing something in there.
What Hi-Fi? Awards: Best DACs of 2020
Installation
I did the great majority of listening and testing using my computer as the source.
For full use that required that I install USB Audio Class 2.0 drivers from Focal’s website.
Keeping one’s web presence in alignment with slower-moving formal documentation can be tricky, nonetheless it’s a good idea to take some effort. So when reading the ‘Firmware Update’ section of the manual, in which the first step is to ‘Go to http://www.focal.com/arche’, one really should not be confronted with a ‘403 Forbidden’ message.
Oh, you can navigate your way there through the usual links (here you go) but why put it in the manual if it’s going to be wrong? And why not put a redirection on the now-defunct page to send new owners to the correct page?
That wobble aside, there were no problems installing the drivers, and no problems with any of my Windows player software in using them. Windows reported supported PCM resolutions of 16- and 24-bits from 44.1kHz up to 384kHz.
Levels
I found I had to be a little careful using the line outputs. There wasn’t a ‘fixed’ line level output. It was controlled by the front-panel level control, just as the headphones were.
I initially made the assumption that, like some other DACs which lack a fixed line-level output, the appropriate thing to do was simply to advance the gain to the maximum position – an indicated ‘99’ on the front panel – and then use my amplifier’s volume control for level.
When I later checked the manual, that is indeed what Focal suggests. Note, also, that there is only one system-wide level. The unit does not maintain separate levels for headphones and line output. Indeed, inserting headphones does not stop the line output. If you have it on 99 for your main system and then decide to listen with headphones, do make sure you turn down the level.
But as the unit always switches on with the volume level set to ‘20’, which is way too low both for headphones and the line output, I’d recommend you never switch the unit off at all. This will also mean that you will also need to go into the settings menu to switch the Arche’s automatic standby function off.
Also, I would further suggest that you don’t use the ‘High’ gain setting. I tried it at one point while the RCA outputs were connected to my audio system. It did seem rather louder than usual for a given system output level setting. But as I played the bonus Yes cover of Simon and Garfunkel’s America from Fragile, there was this weird crackle on the right channel.
Well, not precisely a crackle, but rather a ‘crack’ on certain very loud notes. For a few moments I revelled in this: a little something previously unheard! But then I started to worry. Was there something wrong with the right-hand KEF LS50 speaker I was using (supplemented by a Krix subwoofer, but that’s not relevant here).
So I started fiddling with levels. I turned the Focal Arche down to ‘80’ output instead of ‘99’, and turned up the amplifier to restore the speaker output to the same volume level as previously. There were no more ‘cracks’… which I found a bit odd, because it was presumably input overload distortion, but input overload distortion doesn’t normally sound like that.
Listening sessions
I should note that the unit does not decode MQA. If you use TIDAL, the TIDAL app will unfold any MQA high-resolution content and the Arche will indicate on its front panel display the higher sampling rate… or at least it will if you press the front panel control button or rotate the knob.
The default state of the display is a large pair of digits indicating the output level, with the selected input source in smaller type above it. To see sample rate and digital audio format you have to manipulate the control. After a few seconds it reverts to the previous state. There’s no option for changing the display mode permanently.
It’s good that the format and rate can be seen, but I’d prefer to have them showing by default. This was brought home when I discovered at one point that 192kHz tracks were coming out at 96kHz. I was using JRiver Media Centre and had previously set it to convert anything above 96kHz sampling to 88.2kHz or 96kHz as appropriate because it had previously been used in conjunction with my review of an AudioQuest DragonFly Cobalt DAC.
As I keep saying in all my reviews, it’s very easy to accidentally use the wrong output settings, but, of course, most normal people are not hi-fi reviewers and will therefore be setting up their computers for just the one DAC, not darting around between different ones.
I didn’t have an amplifier with XLR inputs available, so for loudspeaker listening used the RCA outputs. Generally the unit sounded excellent, just as I’d expected. But every so often there was just a little background noise, sounding somewhat like random electrical noise. Which of course had me suspecting some breakthrough of the noise from my home computer network, delivered by the USB connection.
I therefore unplugged the computer from the network as well as from mains power, but it made no difference. I only heard it in one listening session, so after a while I started to doubt that I’d heard it at all. There was certainly no such noise when using headphones. And, of course, it’s with headphones that one is most likely to hear such untoward things.
I used a pair of Focal Elear dynamic headphones – Focal’s ‘entry level’ model, priced at AU$1,599 – as well as Oppo PM3 planar magnetic headphones (the brand has now ceased to operate in this space), a pair of ancient Sennheiser HD-535 open-back models and a set of Final Audio B3 in-ear monitors (AU$729). The Arche’s output was set to ‘Elear’ for those headphones, of course, and to ‘Hybrid’ for the others.
The first thing to note was that with none of the headphones was there any chance of the output limits of the Focal Arche being approached. ‘Ample’ is not the word to describe the output on tap. It could be destructive if one wanted. You need not worry about your headphones being supplied insufficient power.
And that translated into a real authority in performance. At this point I’ll pause to slightly regret the order in which I did things. As is my usual practice, the measurements were made after the listening sessions had been completed. I do that intentionally because I’m fearful that my listening impressions may be coloured by knowledge of the unit’s objective performance.
But in this case I was later to discover that the one thing done by the named amplifier output settings was switch between three different output impedances. That means that to the extent that a set of headphones has an uneven impedance curve, its tonal balance will vary according to the setting of the amplifier.
That seemed to have an affect upon the performance of the Final Audio B3 in-ear monitors. These use dual balanced-armature drivers (sans crossover) and delivered a fuller, richer, more balanced performance with the Focal Arche than they did with the DragonFly Cobalt mini-DAC. It turns out that the ‘Hybrid’ setting of the Arche implements a 10Ω inline output impedance, and I’m thinking that this provided a fortuitous adjustment of tonal balance.
The effect was subtle, and the B3 buds sounded excellent anyway with the Cobalt, but they sounded even better with the Arche. I would have liked to experiment more with listening using the different modes, but the loaner review unit was by then already overdue for return.
With the Oppo PM-3 headphones, the sound was more traditional (they are closed back). They have an even impedance across the audible frequency band so they don’t really care about (modest) output impedances. They delivered an extremely solid performance with the Focal Arche amplifier. I went back in time to the debut Black Sabbath album. The thunder at the opening of the first track was utterly clean and deep. When the first riff cuts in, the drums pierced through the mix to hover above it all, even the toms. They were surrounded by substantial air, filled with their natural reverb. The hi-hat bit appropriately.
Going back to the Final Audio B3 in-ears, there was enormous life and dynamic range across all the music genres I tried (including prog rock, jazz, female vocalist, baroque and classical). The best sound came from the open-backed Elear headphones. Focal knows what it’s doing by providing a first-class signal to drive its own products: The Elears were open and airy, limitlessly detailed and beautifully balanced.
Best audiophile headphones 2021: ultimate high-end headphones
Final verdict
If you’re after a high quality DAC to drive your Focal headphones (or really, any brand or model of headphones at all), the Focal Arche is a fine unit.
My same enthusiastic recommendation will also be the case if you intend to use the Focal Arche in your main system… but only if you’re using the XLR outputs.
Laboratory tests
I calculated the internal impedance of the Focal Arche’s headphone output at 2.5Ω. It delivered 1.9VRMS into a 300Ω load, which is around 12mW or nearly 11dB above the sensitivity rating used by most headphones. Into a 16Ω ohm load, it delivered 1.65VRMS, or 170mW and more than 22dB above sensitivity rating.
I figured that was that… but a couple of days later I started to wonder about the different amplifier settings. The Voltage setting is supposed to be a voltage amplifier, in which the unit need not provide much current. The Hybrid setting is supposed to combine voltage and current amplifier functionality. And the other five settings feature outputs optimised for particular models of Focal headphones. Would they make a difference?
Indeed they would! To four significant figures at nine different measurement criteria, the Voltage output setting was unique, while the Hybrid and Elear settings were the same, and the Utopia, Clear, Elegia and Stellia settings were the same. It was with the Voltage setting that the internal impedance of the Focal Arche was around 2.5Ω. With the Hybrid and Elear settings, it was around 10Ω. With the Utopia et al setting it was around 17.5Ω.
I did not repeat the measurements on the ‘High’ gain setting, just did a quick check to see what effect that had on level: it boosted it by 12dB. Into high-impedance loads you can expect the maximum output from the headphone amp to be about 7.5VRMS. Clearly there’s never going to be a shortage of power even with high-impedance, low-sensitivity headphones.
The unit has fairly aggressive output protection. Everything went smoothly at low gain, but when I tried to measure maximum output at high gain into low impedance loads (16Ω), I kept tripping the protection. Oh, don’t worry that this may constitute some limitation on performance. Oh no… the last measured output voltage with a 1kHz test signal into that low impedance was around 5.2VRMS. That equates to 1.7 watts – not milliwatts, watts – output. Add 32dB to the sensitivity rating of your earphones or headphones, and that’s the maximum it will deliver with the high gain setting. Enough, in other words, to do major damage to you or your ear gear in very short order.
All that was in voltage mode, which you will recall has a low output impedance. In Hybrid mode, with an output impedance of around 10Ω, the unit could be wound up to the maximum level at which point it was producing a ‘mere’ 4.7VRMS output. Or 1.4-watts and 31dB above the sensitivity rating.
The unbalanced line level outputs were a bit lower in voltage than the norm, delivering around 0.95RMS in ‘Low’ gain mode and 3.8VRMS in ‘High’ gain mode. Of course, that’s with the level control set to maximum in both cases.
Speaking of the level control, it has 100 indicated levels. Down very low each numerical increment amounts to around 1.5dB. At higher levels that drops to 1dB per indicated number, then 0.5dB and then from level 60 and up, 0.5dB per two number increments.
Graph 1 shows the frequency response of the Focal Arche with 44.1kHz signals and you can see that the frequency response is sensible: it rolls off a little above 8kHz to be down by around 0.35dB at 20kHz, then drops rapidly beyond that. There’s also a very slight roll-off in the bass, with output down by 0.4dB at 10Hz.
Graph 2 shows the frequency response with 96kHz sampling, and you can see that the bass was the same while output was down by 0.3dB at 20kHz, 0.7dB at 30kHz and 1.2dB at 40kHz.
Graph 3 shows the frequency response with 192kHz sampling, and you can see that the the 96kHz performance is simply continued: –1.8dB at 50kHz, –2.6dB at 60kHz, –3.4dB at 70kHz and –4.3dB at 80kHz.
Clearly Focal has chosen the DAC filter settings to return a flatter, more extended frequency response than many other DACs.
With 24-bit audio, tested with both 96kHz and 192kHz sampling, the noise performance I measured from the Focal Arche was simply weird. Let’s start with the easiest bit.
With the XLR outputs, the noise was at –108dBA consistently with repeated measurements. And that figure was maintained irrespective of whether my Surface Pro 2017 was plugged in or not. When it was plugged in, it was connected by wire to my home network, and that is one horribly noisy affair. The great majority of DACs let some of this noise out into the analogue output.
The Focal Arche did not. Measurements, plugged in or not, were identical… at least they were when I was using the XLR outputs. But when using the RCA outputs, things were very different. First, the results I gained were inconsistent. From measurement to measurement they ranged from –79dBA to –97.6dBA.
Again, it didn’t matter whether the computer was plugged in or not. To double-check that, I pulled out a network streamer and connected it to the Focal Arche by optical digital audio, just to ensure that there was no way any electrical interference could be carried. It resulted in a middling –89.8dBA noise level.
To double-check the test setup, I then switched in a different DAC which I knew to provide good performance. Its RCA outputs delivered a noise performance of –114.5dBA when using exactly the same rig I used for the Arche.
Graph 4 illustrates the variance of the noise levels depending on the output used. I have included a couple of the RCA outputs with and without the connected computer plugged in, plus the optical connection. They are the five traces up relatively high.
The white and green traces near the bottom are via the XLR outputs. The purple trace right at the very bottom is the RCA output from the comparison DAC. The point of that is to demonstrate that the test arrangement wasn’t the problem.
Note, also, that all the output measurements – apart from the one for the comparison DAC – had a weird bump in the noise around 60–70kHz of varying levels. This would not, of course, be audible, but it is just a little bit strange.
Testing Tests overview Smartphone Oppo Reno 4 Pro in the test: Top smartphone for 500 € Motorola Moto G 5G Plus test: A lot of battery for little money Huawei P Smart 2021: Budget model with room for improvement Asus Zenfone 7 Pro: Turbo smartphone with flip camera Samsung Galaxy Xcover Pro in the test: hard but slow Oneplus Nord N 10 5G in the test: galloped in price Oppo Find X2 Pro in the test: performance bargain S martwatch Oppo Watch in the test: Great AMOLED Smartwatch from 240 € Samsung Galaxy Watch 3 in the test: competition for Apple? Huawei Watch GT 2 Pro in the test: Smartwatch with cross-country skiing Battery Apple Watch: Smartwatch with contract from 15 € per month Buy Apple Watch 6: All generations in the price check Skagen Falster 3 in the test: Smartwatch with Wear OS Test Huawei Watch GT 2: Noble fitness tracker in watch form Multiroom Ikea Symfonisk table lamp in the test: Sonos with lamp Ikea Symfonisk in the test: Sonos loudspeakers under 100 Euro Bose Portable Home Speaker in the test: battery, WLAN, Airplay 2 Sonos Move in the test: The robust all-rounder Musiccast: Multiroom from Yamaha in the test Denon Heos in the test: versatile multiroom system Flat soundbar Teufel Sounddeck Streaming in the test Keyfinder Tile Slim (2019): Key finder in credit card format Bluetooth key finder Tile Pro in the test: 122 m range! Key Finder Tile Pro in the test: the range champion Orbit Bluetooth tracker in the test: looking for wallet and keys Nonda iHere 3.0: smart key finder in the test Chipolo Classic and Plus: Bluetooth key finder in the test Musegear finder 2: Key finder without registration obligation Action-Cam DJI Pocket 2 in the test: Zoom and 64 – megapixels -Sensor Actioncam Insta 360 One R: 1-inch image sensor in the test Gopro Hero 8 Black in the test: back to the top Insta 360 One R in the test: The modular action cam Motorola Moto G8 Plus test: Great smartphone, but … Insta 360 Go: Micro-GoPro in the test Motorola One Action Test: Good hardware, bad camera microSD In the test: Kingston UHS-I U3 microSDXC Kit MicroSD card for smartphone: Samsung Evo Plus 2017 Test report: Lexar Professional 1800 x microSDXC Kit Test report: Intenso Premium microSDXC card with 64 GByte Android Sonos Move in the test: The robust all-rounder Honor 20: Inexpensive high-end smartphone in the test Xiaomi Mi 9: Top technology at a bargain price Doogee S 90 in the test: modular outdoor smartphone ZTE Axon 10 Pro in the test: high-end phone at a competitive price Motorola Moto G7 Power in the test: large battery, small price Sony Xperia 10: Smartphone with 20: 9 display in the test Adviser Advisor Overview Purchase advice The right cordless screwdriver for the home workshop Bargain: Which Fire TV Stick from 19 € is the right one? Purchase advice: What good is a leaf blower with a battery for 45 Euro? True -Wireless headphones: How much do you have to invest? Purchase advice water cooling: High-end PCs cool better Adviser: Air conditioning and fan against the heat wave Sony shows the Xperia 1: Is the predecessor XZ3 worth it now? Practice Caution, money away: Kickstarter & Co. are not shops Turn off Android notifications from annoying apps Here’s how: Install the new Android L keyboard now Tip: Use “Ok Google everywhere” in Germany In the test: Will the jailbreak work for iOS 7.1? Goderm a and mobile medicine: The doctor apps are coming! Instructions: Jailbreak for iOS 7 on iPhone 5S, 5, 4S and 4 Technology Importing technology from China, part 2: Customs, taxes and tricks Drones & copters: From toys to FPV Racer What does the end of an ecosystem mean? Smartphones with a flexible display: What’s the point? Overview of smartphone processors: Everything Snapdragon? Evolutionary dead ends: the a Worst mobile phones mpass: Pay with the NFC mobile phone – or the NFC toilet roll Display calculator pixel density, number and Calculate display portion Best list Test winner Price comparison Price comparison overview Smartphones from Android 7.0 Phablets with stylus Fitness tracker with GPS Bluetooth headphones with ANR Drones with GPS Video TechStage Adviser Guide: Tablets for homeschooling and learning portals Beginning What are … PC or tablet? Tablets for … Tablets Tablet with … Stylus Additional accessories Headsets Tablet stand … Keyboards Mice Conclusion Comments from Stefan // 21. 01. 2021 16: 19 Clock
Regardless of whether it is a sofa tutor, the Studienkreis Online-Lernbibliotek or the school minator – learning portals can be a useful alternative to traditional tutoring for school children of all ages. We show the best tablets for it.
If the child is weak at school, there are several alternatives. In addition to personal initiative, this primarily includes follow-up sessions in learning groups such as the study group or individual tutoring, as offered by many older pupils or students. However, especially in times of epidemics, contacts with strangers must be restricted as far as possible, so traditional tutoring is usually ruled out.
What are learning portals? In addition to homeschooling (guide: PCs for homeschooling from 150 Euro) there are also digital solutions for tutoring in the form of learning portals. Depending on the provider, they usually offer help for grades 5 to 10, which is usually available in text and video form for several subjects. Some companies go far beyond this and have offers for all classes and types of school as well as most of the subjects offered at the various types of school.
Sometimes there are also educational games and, in most cases, exercises to check and consolidate what has been learned. In addition, some portals also offer personal support via chat, help with homework or complete individual lessons via video chat.
Providers such as Lernwerk, Schulinator or Studyhelp even offer their services free of charge, most others charge between 5 and 25 Euro. Free test phases or even some videos published on Youtube offer first insights into the type and quality of the offer. Payment is usually made for several months in advance or in an annual subscription, some providers even give a money-back guarantee in the event of a lack of learning success.
PC or tablet? A PC is not always necessary, a much cheaper Android tablet is easily sufficient for learning videos. However, some criteria should be met so that the tutoring is fun on the technical side. This is how we see tablets with a display size below 10 inch (approx. 25 cm) critical and also a display resolution of 1920 × 1080 Pixel should not be undershot for sufficiently sharp display. The devices should have at least a quad-core processor and 2, better 3 GB of RAM so that inputs can be implemented without waiting time and videos can be played smoothly. Internally is a memory size of 25 GByte or Larger is optimal, so that apps and videos can also find space in the memory and can be used without direct Internet access.
WLAN as Internet access should be sufficient in most cases, so parents can safely ignore expensive LTE modules. For young students, it may be worthwhile to use particularly robust, but hardly available, children’s or outdoor variants. Alternatively, there are protective covers or tablets for children. Amazon offers the kids edition of its Fire HD tablets for this purpose. Not only do they last longer, they also allow parents to access and block certain distracting factors such as the app store and in-app purchases. For certain subjects or advanced students, purchasing a tablet with pen control can also be helpful. This enables sketches or handwritten notes to be digitized quickly. The requirements of the individual providers or the school are usually revealed on their homepages.
Tablets for children The kids editions of Samsung and Amazon offer, as mentioned, special protective covers that are supposed to protect the tablet even when used in rough conditions and also offer various parenting functions such as restricting the available apps. Unfortunately, the RAM is a bit tight at 2 GB. They are more aimed at children who are not yet in secondary schools. However, they are sufficient for the use of normal learning portals. The Fire HD 10 in the Kids Edition (test report) we have already tested it.
Tablets For round 150 to 200 Euro get those interested with the current models Odys Space One 10 LTE , Lenovo Tab M 10 Plus and Samsung Galaxy Tab A7 three 10 – Customs tablets that are up-to-date and meet the minimum requirements required by us. The Odys model not only offers a lot of memory (4 / 49 GByte), but also an LTE module. This allows learning sessions – a corresponding LTE contract (Article: Unlimited data volume from 20 Euro) provided – in good weather also in the park or at least in the garden. Android 10 is already available from the factory – this is far from normal with tablets.
That shows something like this Lenovo Tab M 10 Plus , which is currently only Android 9 offers. The remaining specifications are marked with 4 / 64 GByte memory similar, only LTE does not exist. This is also the case with the Samsung Galaxy Tab A7 so, also the memory is with 3 / 32 GByte slightly smaller. There are advantages for the chipset: The other two tablets also offer 8 cores, but Samsung uses a Snapdragon 662 that does not only delivers decent power, but also favors future updates and is less power hungry. Accordingly, auc h this model already has Android 10. With 10, 4 inches, the screen of the Samsung tablet is also the largest, this also applies to the battery with 7040 mAh.
We have other suitable tablets in our purchase advice: How many tablets do you need? sorted by price. The price scale is largely open at the top. If you don’t like Android, you should look around at iOS models, i.e. iPads. The cheapest current models are iPad Mini (test by Mac & i) and iPad (without name affix), they cost from 379 and 449 Euro. The larger and more modern models iPad Air (test by Max & i) and iPad Pro start at 649 and 879 euros. However, we would exclude the iPad Mini as a tablet for homeschooling because of the display size of only 7.9 inches.
Tablet with pen Tablets with additional pen control are available in a handful, current and Currently, the Samsung Galaxy Tab S6 Lite . It not only offers advantages in terms of design and installation depth, but also a stylus with suitable software and more memory.
Stylus A stylus can be helpful to make drawings or handwritten notes directly on the tablet. With some models, such digital pens are already included from We rk, while others are prepared for operation, but the pen must be purchased separately. Such models are about d as Apple iPad ( from 6th generation) , iPad Mini (from 5th generation), iPad Air (from 3rd generation) or the iPad Pro , here the pens cost between 90 and 120 Euro.
Simple capacitive pins without egg Genetic power sources are much cheaper, they b e start at a few cents. They work on any device with a capacitive touchscreen and usually have a thick, soft rubber tip . So that become they recognized as finger replacement on current touchscreens . Special pens with rechargeable batteries or batteries, however, have a thin , mostly exchangeable Tip, which also recognize different pressure levels and often buttons for additional options (such as “erase” when Hold down ) bid. With them the handling is much more similar to a normal pen on paper than with the former Pens. Examples of high-quality tablet pens are Samsung’s S-Pen or Apple’s Pencil. In our guide to pens for the iPad we show cheaper alternatives to the Apple Pencil.
Additional accessories As with the PC, there are also peripheral devices for tablets. They are not absolutely necessary, but make everyday life easier.
Headsets If you want to concentrate on your work or if you have to understand everything in the video call despite the poor sound quality of your conversation partner, you should consider purchasing a headset. Many tablets also offer a 3.5 millimeter jack connection so that the cable headset from the smartphone can also be used in an emergency. Wireless headsets that are connected via Bluetooth are more practical and usually also of higher quality. Headphones with active noise suppression in particular (best list ANC headphones) can even promote concentration as they minimize external distraction.
Due to the design, over-ear headsets are best. They cover the whole ear, are usually still comfortable when worn for a long time and already shield something from the environment. They are also available with and without cables and also with ANC. The advantage of wired headsets: You do not have batteries that are always empty exactly when they are needed. But they are less flexible and the mandatory cable always hangs in the way.
Tablet stand and cover One advantage of tablets is their flexibility by comparatively low weight and size. However, if the children are to follow the learning video and complete test tasks, the device must be stable can be found. That works either with separate stands, Book c overn or equal to a keyboard cover. Stands are self-explanatory: They are external rne constructions that only serve the purpose of placing a tablet more or less straight in front of you on the table. A book cover protects the tablet during transport, thanks to the flexible cover usually also the display. In addition, the device can also be set up in front of you on the table, often there are even different adjustable angles.
Keyboards Thanks to Bluetooth, a keyboard can be wirelessly connected to any tablet, regardless of whether it is Android, iOS or Windows. You have a wide choice. This ranges from simple, classic keyboards to those that are extremely flat to ultra-compact TKL keyboards with mechanical switches. More on this in our keyboards guide: Mechanical, rubber dome or TKL? or multimedia keyboards for Smart TVs and Media PCs.
The keyboard or keyboard c over added to Bookcover another mechanical full keyboard, which connects to the tablet via Bluetooth. Especially when longer texts are to be written on the device s , is a mechanical keyboard significantly better than the onscreen cords of the T ablets. For home Bluetooth keyboards without a protective function are usually sufficient.
Mice What applies to a laptop is no different for a tablet: touchscreen and / or touchpad Operation is okay, mouse control is often more ergonomic in the long run. Since most tablets lack the large USB-A ports, mice with USB C (or adapter) or Bluetooth mice are required. With a keyboard and mouse, a cheap tablet almost becomes a real office PC, but for the sake of simplicity, users can simply leave the accessories at home for on the go. So you always have the best of both worlds at hand.
Conclusion It doesn’t always have to be a full-fledged PC, even comparatively cheap tablets can help improve school success. In addition to the appropriate learning portal, parents should also keep an eye on the right hardware – if you set too low, you may buy a new one after a short time.
Should it be a new PC for homeschooling? Then we have the right tips and recommendations in this article.
Permalink: https: //techstage.de/-4969716
Tags
Home office Tablet Cyber Monday 2020: The best TV bargains Smartphone Realme 7 in the test: 90 Hertz at the saver price
The Raspberry Pi Pico is a radical change from previous Pis, because it’s not a Linux computer, but a a microcontroller board like Arduino . The biggest selling points of the Raspberry Pi Pico are the price, $4 and the new RP2040 chip which provides ample power for embedded projects and enables users of any age or ability to learn coding and electronics. If you have a Windows, Apple, Linux computer or even a different Raspberry Pi, then you are already well on your way to using the Raspberry Pi Pico in your next project.
Getting Started with Raspberry Pi Pico
The Raspberry Pi Pico is vastly different to any model before it. It is the first device to use RP2040 “Pi Silicon” which is a custom System on Chip (SoC) developed by the Raspberry Pi team which features a dual core Arm Cortex M0+ running at 133 MHz, 264KB of SRAM and 2MB of flash memory used to store files.
The one downside of the Raspberry Pi Pico is that there is no wireless connectivity. The RP2040 is the first microcontroller in the Pi range and this brings with it a new way of working. The Pico is not a computer, rather we need to write code in an external application on a different computer and “flash” the code to the microcontroller over USB. In our tutorial on how to get started with Raspberry Pi Pico, we explain how to connect a PC to the Pico and use it to upload MicroPython code.
Coding with the Raspberry Pi Pico
Writing code for the Raspberry Pi Pico is handled in C/C++ or MicroPython, the latter being the officially supported language for general and education use, as confirmed by James Adams, Chief Operating Officer of Raspberry Pi.
MicroPython on Raspberry Pi Pico
MicroPython is a version of Python 3 for microcontrollers. It was created by Damien George and first used with the PyBoard development board back in 2014. Since then, more devices have adopted this easy to use language and there is a further fork of MicroPython,CircuitPython created by Adafruit which adds further enhancements for their range of boards. Writing MicroPython code for the Raspberry Pi Pico is possible using the Thonny Python IDE, which is available for all the major OSes, and it is the most accessible way to get started with your Pico.
A fork of MicroPython, CircuitPython has been released for RP2040 boards. Created by Adafruit, CircuitPython has an impressive library of pre-written modules for sensors, LCD / OLED / LED screens and output devices such as thermal printers. Flashing CircuitPython to the Raspberry Pi Pico is as simple as flashing MicroPython, and it is reversible should you wish to revert back to MicroPython or C/C++.
C/C++
Writing code in C/C++ is made possible via two methods. Firstly we can write the code directly in a text editor of our choice and then follow a workflow to build the files which are then flashed to the Pico. Or we can use a graphical workflow and have Microsoft’s Visual Studio Code handle the creation, build and flash process in one application.
Arduino have announced that they will be adding support for the RP2040 to their Arduino IDE, which will simplify the C/C++ workflow immensely and bring it more inline with how Arduino hackers have worked for many years.
8 × Programmable I/O (PIO) state machines for custom peripheral support.
Castellated module allows soldering directly to carrier boards.
Operating at 3.3V, the Raspberry Pi Pico has a 40 pin GPIO, but it does not share the same form factor as the Raspberry Pis before it. We have GPIO pins for digital inputs / outputs, pulse width modulation (PWM) and for specialist communication protocols such as I2C, SPI, UART/Serial. The GPIO also has three Analog inputs, something other Raspberry Pis lack, that use variable voltages to connect to, for example, a potentiometers, joystick or light-dependent resistor.
The GPIO pins themselves feature castellations, small cutouts that permit the Raspberry Pi Pico to be soldered in place into a project or carrier board.
More importantly, we can also solder header pins to the Pico and use it in a breadboard. See our tutorial on how to solder Raspberry Pi Pico pins for more details.
What You Do With a Raspberry Pi Pico
Retailing for $4, the Raspberry Pi Pico is a cost effective means to tinker with electronics projects and study physical computing.
We can use the power of Pico at the heart of robotics and motorized projects, collect data using sensors for temperature, humidity, light and pollution and we can learn the basics of programming and electronics.
The RP2040
Image 1 of 5
Image 2 of 5
Image 3 of 5
Image 4 of 5
Image 5 of 5
The Raspberry Pi Pico is currently the only board to offer the RP2040 but it won’t be that way for long. Adafruit have announced two new boards based upon the RP2040. The Feather 2040 and ItsyBitsy 2040 follow Adafruit’s own range of board layouts and bring extra features such as battery charging, larger storage capacity, STEMMA QT and Neopixels to the mix. Arduino have announced that they are working on the Arduino Nano RP2040 Connect, a variant of the RP2040 with WiFi and Bluetooth. SparkFun have also released the own board based upon the RP2040 which sees their design add a micro SD card and larger onboard flash storage to accommodate projects and corresponding files. Pimoroni have announced the smallest RP2040 based board, aptly named the Tiny2040, this board has less GPIO pins than most, but it has a large onboard flash storage just like SparkFun’s board.
The RP2040 may be the new kid on the block, but it has already brought lots of alternatives to the table, and this is just the start for this low power, high speed chip.
RP2040 Board Comparison
SoC
GPIO
Extra Features
Dimensions
Raspberry Pi Pico
Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz, 264KB of SRAM, and 2MB of on-board Flash memory
Accurate clock and timer on-chip. Castellated module allows soldering direct to carrier boards.
21 x 51mm
Adafruit Feather RP2040
Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz, 264KB of SRAM, and 4MB of on-board Flash memory
21 GPIO Pins, 4 x 12 bit ADC, 2 x I2C, 2 x SPI, 2 x UART, 16 x PWM, STEMMA QT
200mA lipoly charger, RGB Neopixel, Reset Button, USB C
50.8 x 22.8mm
Adafruit ItsyBitsy RP2040
Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz, 264KB of SRAM, and 4MB of on-board Flash memory
23 GPIO Pins, 4 x 12 bit ADC, 2 x I2C, 2 x SPI, 2 x UART, 16 x PWM, STEMMA QT
RGB Neopixel, Reset Button, Micro USB
36 x 18mm
Pimoroni TinyRP2040
Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz, 264KB of SRAM, and 8MB of on-board Flash memory
12 GPIO Pins, 4 x 12 bit ADC
RGB LED, User Switch
22.5 x 18mm
SparkFun Thingy Plus
Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz, 264KB of SRAM, and 16MB of on-board Flash memory
30 GPIO Pins, 4 x 12 bit ADC, 2 x UART, 2 x I2C, 2 x SPI, QWIIC Connector
500mA lipoly charger, RGB LED, Rest Button
58.4 x 22.8mm
Accessories and Addons
Image 1 of 6
Image 2 of 6
Image 3 of 6
Image 4 of 6
Image 5 of 6
Image 6 of 6
First and third part accessories are the life blood of the Raspberry Pi and maker communities. They bring extra features and enable projects to be realised more easily. With the Raspberry Pi Pico’s new form factor there is a need for new accessories and the first to market at Pimoroni, a UK based official Raspberry Pi reseller. They have released 12 new accessories for the Pico, nine of which are available at launch. They range from simple breakout boards enabling multiple addons to be used at once, to advanced audio output devices and a VGA Demo board which uses the Programmable IO of the RP2040 to create DVI video signals. If your interest are more LED inclined then the Unicorn Pack sees 112 RGB LEDs ready to dazzle your eyeballs.
Tutorials and Support
The best things about Raspberry Pi is the great community and the thousands of tutorials that have been created. From basic to complex there are great tutorials to help you learn new skills.
Right now the Raspberry Pi Pico is so new, that there are only a handful of tutorials available, but as this $4 makes its way across the world, more enthusiasts, such as those who work at Tom’s Hardware will create new ways to help you get the most out of the Raspberry Pi Pico.
The game development platform GameMaker and the gaming browser Opera GX will form the cornerstones of Opera’s new gaming division in the future. GameMaker’s own script language (GML) can be used to develop 2D games for all common consoles, Android, iOS, macOS, Windows, Linux and HTML5. According to YoyYo Games, the development platform is aimed at both beginners and advanced users and does not require in-depth programming knowledge. The GameMaker 2 software was used in the development of the indie games “Forager”, “Spelunky” and “Hotline Miami”.
Future in the gaming industry? Opera entered the gaming sector in June last year with the Heralded the launch of the Opera GX browser, which has now also appeared for the Mac. The browser is intended to attract players with all sorts of gimmicks, such as setting options for RAM and CPU consumption, bandwidth limitation, Twitch integration and release calendars. Also on board are the in-house Opera VPN and an ad blocker.
In a message about the takeover of YoYo Games, Opera reports that the GX browser will be released in December 2020 exceeded 7 million active monthly users for the first time. Opera continues to see growth potential in the gaming area according to its own statement.
The Raspberry Pi Pico is an intriguing board. Rather than be another Linux single board computer like every other Raspberry Pi, the Pico is a low-cost Arm based microcontroller which we can program using C/C++ and MicroPython. In this tutorial we will introduce how to get started with the Raspberry Pi Pico, If you would like to know more technical details about the board, then take a look at our review
How to Set Up the Raspberry Pi Pico
1. Download the MicroPython UF2 file from the MicroPython tab.
2. Push and hold the BOOTSEL button on the Pico, then connect to your computer using a micro USB cable. Release BOOTSEL once the drive RPI-RP2 appears on your computer.
3. Drag and drop the UF2 file on to the RPI-RP2 drive. The Raspberry Pi Pico will reboot and will now run MicroPython.
Pico Python is MicroPython for the Raspberry Pi Pico. If you have never used MicroPython, it is a version of Python 3 developed for microcontrollers. If you can write Python, then you can write MicroPython. To write MicroPython code, we need to use a dedicated editor and the default, basic editor is Thonny which is what we shall use for this tutorial.
1. Download and install Thonny for your OS, if you don’t already have it. You can grab it for free from the Thonny website. In our case, it is v 3.3.2 for Windows.
2. In a web browser, download the required backendfor Thonny to communicate with the Raspberry Pi Pico.
3. In Thonny, go to Tools > Manage Packages and select Install from local file. Navigate to where the file has been downloaded and select the file to install. When done restart Thonny.
4. Connect the Raspberry Pi Pico to your computer and in Thonny go to Tools > Options and click on the Interpreter tab. From the interpreter dropdown list select MicroPython (Raspberry Pi Pico). The port dropdown menu can be left to automatically detect the Pico. Click Ok to close.
The Python Shell (also called REPL, Read, Eval, Print, Loop) will now update to show that the Pico is connected and working.
5. To test we can write a quick print function to say “Hello World.” Press Enter to run the code.
print(“Hello World”)
How to Blink an LED Light on Raspberry Pi Pico
To further test that we can successfully program the Raspberry Pi Pico, we shall write the “Hello World” equivalent for hardware projects, flashing an LED. This quick test ensures that our hardware is working, and it will introduce the MicroPython language and syntax in the simplest form.
Before we start writing any code, we first need to wire up our test circuit. This will require header pins to be soldered to the Raspberry Pi Pico. To build this project you will need:
A half size breadboard
An LED
A 330 Ohm resistor
1. Insert the Raspberry Pi Pico into the breadboard so that it sits over the central channel. Make sure that the Micro USB port is at one end of the breadboard.
2. Insert a 330 Ohm resistor into the breadboard, one leg should be inline with GND, which is pin 38. The other leg should be inserted into the – rail of the breadboard. This provides us with a GND rail where all pins in that rail are connected to GND.
3. Insert an LED, with the long leg (the anode) inserted into the breadboard at pin 34, and the short leg inserted into the GND rail. The circuit is now built.
With the circuit built we can now start writing the code to flash (blink) the LED.
4. Import the necessary libraries. Our code is written in the large blank space above the REPL and we start by importing two MicroPython libraries. The first is the Pin class from the Machine library, the second is utime, used to control the pace of our code.
from machine import Pin
import utime
5. Create an object, “led” which is used to create a link between the physical GPIO pin and our code. In this case, it will set GPIO 28 (which maps to physical pin 34 on the board) as an output pin, where current will flow from the Raspberry Pi Pico GPIO to the LED. We then use the object to instruct the GPIO pin to pull low.n other words this will ensure that the GPIO pin is turned off at the start of our project.
led = Pin(28, Pin.OUT)
led.low()
6. Inside of a while True loop, a loop with no end, we toggle the LED on and off, and print a message to the Python Shell (REPL) to prove that the loop is working. Lastly, we add a sleep to pause the code for one second between each iteration of the loop.
while True:
led.toggle()
print("Toggle")
utime.sleep(1)
7. Click on Save and choose to save the code to the MicroPython device (Raspberry Pi Pico). Name the file blink.py and click Ok to save. Your code should look like this.
from machine import Pin
import utime
led = Pin(28, Pin.OUT)
led.low()
while True:
led.toggle()
print("Toggle")
utime.sleep(1)
8. To run the code, click on the Green play / arrow button and the Python Shell will update to say TOGGLE every second, and the LED will flash on and off.
We have successfully tested our Raspberry Pi Pico and we can now move on to another project. Such as learning how to use sensors with the Raspberry Pi Pico.
The German company Tuxedo brings that 15, 6-inch notebook InfinityBook S 15 with Intel’s Tiger Lake processors and pre-installed Linux operating system. Thanks to its compact dimensions, the model is quite light, and also provides a 73 -Watt-hour battery for a long runtime.
The heart of the InfinityBook S 15 optionally forms a Core i5 – 1135 G7 or Core i7 – 1165 G7 Intel’s 10 Nanometer Production. Both come with four CPU cores, but the i7 model has a higher clock rate, uses more level 3 cache and has a more powerful graphics unit. Both models have Tuxedo with a Thermal Design Power (TDP) of 28 watts run, which ensures high turbo clock frequencies.
Long battery life and many connections The 15 , 6-inch IPS display covers 74 percent of the sRGB color space and lights up with up to 300 cd / m². The housing is made of aluminum and plastic; the complete notebook weighs around 1, 74 kilograms. The battery should last up to 19 hours – under realistic office conditions, Tuxedo promises 11 hours at half display brightness.
On the connection side, the InfinityBook S is 15 well equipped: 1 × Thunderbolt 4 as USB-C port including USB 4, DisplayPort Altmode and Power Delivery, 2 × USB 3.2 Gen 2 (10 Gbit / s, once each type A and type C), 1 × USB 2.0 type A, HDMI 2.0, audio combo jack, micro SD card reader and Gigabit Ethernet. Wi-Fi 6 (WLAN 802. 11 ax) and Bluetooth 5.1 are also included.
Tuxedo InfinityBook S 15 (19 Pictures) (Image: Tuxedo) From 802 Euro can be pre-ordered The basic configuration of the InfinityBook S 15 with Core i5 – 1135 G7, 250 GByte small SATA-6G-SSD and 8 GByte DDR4-SDRAM costs just under 940 Euro. Buyers can have various operating systems preinstalled, from the Tuxedo OS they have customized themselves to Ubuntu LTS and openSUSE – Windows 10 are available at an additional cost. If you want to save money, order without an SSD and retrofit one yourself. The interior is freely accessible thanks to the removable underside. Delivery is to begin at the end of February 2020.
Comparable notebooks with Tiger Lake CPU, lightweight housing and 250 – cd / m² display are available in small numbers 700 Euro available, but without the promised Linux compatibility and less maintenance-friendly.
The Evernote note-taking program is reinventing itself. When changing to a modern substructure, however, many functions fell by the wayside.
Evernote 10 in the test and Evernote CEO Ian Small in the interview Missing functions and test table Interview with Evernote CEO Ian Small Article in c’t 3 / 2021 read Evernote has been one of the most popular note-taking and information-gathering programs for twelve years. It saves texts, images, handwriting notes, file attachments, links, embedded PDFs and file attachments and organizes them in virtual notebooks. Because of the flexible keyword and search functions and also because it cooperates with many scanners, Evernote is sometimes used as a simple document management system. There are clients for Windows, macOS, iOS, Android and web browsers. The data can be kept synchronized on all devices via a cloud connection (Evernote uses Google servers for this).
With the version 10 the manufacturer has developed the clients from scratch. The Electron framework based on Chromium and Node.js serves as the basis for the desktop versions. Evernote for macOS and Windows becomes a web app and looks very similar to the web browser client. Unfortunately, it also took over the moderate speed from that. A few patches that were added quickly have alleviated the initial performance problems significantly, but the new Evernote still feels more sluggish than the previous native clients when leafing through and opening notes.
The surface looks a bit airier and more modern due to larger fonts and line spacing, but it also shows less information with the same window size. Some control elements have changed or postponed, which requires some getting used to. Unpleasant: Only six fonts are supported, two of which are decorative fonts. The previous clients could access all the respective system fonts. Notes designed with it can be seen in Evernote 10 now possibly different.
Access to all contents of heise + exclusive tests, advice & background: independent, critically sound c’t, iX, Technology Review, Mac & i, Make, c’t photography directly in the browser read register once – read on all devices – can be canceled monthly first month free, thereafter monthly 9, 95 € Weekly newsletter with personal reading recommendations from the editor-in-chief Start FREE month Start FREE month now heise + already subscribed?
Log in and read Register now and read the article immediately More information about heise + Evernote 10 in the test and Evernote CEO Ian Small in the interview Missing functions and test table Interview with Evernote CEO Ian Small Article in c’t 3 / 2021 read
An app instead of numerous messengers on the smartphone – Beeper wants to be this dream. 15 Services including iMessage are to be combined there in one interface. So far, the project was called NovaChat, which Eric Migicovsky, CEO of the former smartwatch manufacturer Pebble, announced on Twitter Beepers can then be controlled include WhatsApp, Signal, Telegram, Matrix, Skype, Slack, Twitter, Discord, Instagram, Facebook Messenger and iMessages. “Yes, iMessage runs on Android, Windows and Linux with a trick,” tweeted Migicovsky. The trick is to use a permanently running device from Apple as a bridge on which the Beeper app is installed. If such a device is currently unavailable, Beeper helps out with discarded and jailbroken iPhones.
Open source and yet not secure The messenger itself uses the matrix protocol. The client is not open source, however, the connections that are used to the other messengers are. To use it, you have to pay ten US dollars a month. In return you get a “clean interface” with search and filter for the chats, it says on the website. Bots can be created for beepers via Matrix API and extensions can be connected. You can also host yourself. End-to-end encryption is likely to be lifted in all cases.
The app is still not easy to use. You first have to submit an application online and enter at least the ID of your “favorite network” and other usage habits. Perhaps the dream of a new Adium-croaking duck is not quite fulfilled after all. Apple is unlikely to be happy about a service that publicly issues jailbreak iPhones and thus uses its messaging function. There have already been similar attempts, but so far they have not prevailed.
Corellium, an American ARM-based device virtualization startup, has launched one of its Linux distributions on the latest Apple Mac Mini. This is no mean feat, which is only the first step to conveniently installing Ubuntu and other system variants. Of course, the solution can also be used in other Apple computers with this system, i.e. in MacBook Air and MacBook Pro from the end of last year. All we need is a system image in rpi format and a USB data carrier. Although the experiment can be called a fully successful one, not everything works as it should at the start. Here are the details of the enterprise.
Linux on Apple computers with M1 chip. Ubuntu has been ported to the latest MacBook Air, MacBook Pro and Mac mini models. We owe the achievement to Corellium from Florida.
Apple MacBook with induction charging for smartphones – A brilliant idea, but there is one serious problem with it
Some specialists working on Apple computers with macOS also need access to other platforms such as Windows or Linux distributions. You can run them through a so-called virtual machine, but sometimes you need to “set the system up completely”. This is not possible on new Apple computers with the M1 chip, and in fact it was not, because such a process was successfully carried out by the team from Corellium. Chris Wade, one of the company’s directors, boasted of an achievement that can be treated as a good start for further activities.
Apple Macbook Air with ARM M1 runs much longer on battery
The installation can be run from an Ubuntu image saved in rpi format on a USB drive. The system can easily cope with the full processor power, while software rendering is responsible for graphics support. Unfortunately, the specialists failed to force the GPU to accelerate, but this is only the first version of the solution. Perhaps in the near future it will be possible to solve this problem and eliminate the inconvenience. You can find the necessary files here.
Sonnets M.2 4×4 PCIe Card silent comes in an x 16 slot and offers four places for common SSDs (M.2 modules) with NVMe protocol. If a PCIe slot is occupied, this allows internal and very fast memory space expansion by up to 32 TByte. An internal switch shares the 16 PCIe 3.0 lanes of the card in 4 × 4. With a software RAID you can speed up access (RAID 0) or increase data security by mirroring (RAID 1).
The PCIe The card is suitable for use with macOS, Windows and Linux, but seems to be primarily designed for Apple’s Mac Pro: Apple can only increase additional SSD capacity by removing the old modules and replacing them with new, also very expensive cards – for 8 For example, TByte gives Apple a good 3. 200 Euro. Many users find it more practical to expand the storage space with PCIe cards.
Fast in RAID With only one Samsung SSD 970 We were able to use Evo Plus 1 TByte in the Mac Pro (year of manufacture 2019) Data already with 2544 Write MByte / s and read with 3011. With two of the small memory bars in RAID 0, the transfer rates increased to 5217 and 5105 MByte / s, with three Evos on 6338 and 6750 MByte / s and with four on fantastic 6884 and 7928 MByte / s. For comparison: A SATA SSD creates around the 450 MByte / s.
M.2 4×4 PCIe Card silent (PCIe card for 4 PCIe SSDs) Manufacturer Sonnet Capacity 4 × PCIe SSD with NVMe protocol and M.2 form factor System requirement PCIe x 16 – Slot Price (manufacturer) 450 € Buyers of the Sonnet card must procure the SSDs themselves. Which SSDs are suitable can be found in the manufacturer’s list, which you should follow. Unfortunately, macOS can only be booted from the Sonnet card if no RAID has been set up on it. In addition, it is recommended to only use SSDs of the same type for a RAID, as different cache strategies and controllers can significantly reduce performance in practice.
Faster in Windows – 10 – PC As the suffix silent suggests , the card works without a fan. Instead, a large heat sink with thermal pads dissipates heat to the general airflow inside the Mac Pro. According to the manufacturer, the card also works in Thunderbolt 3 boxes or the Mac Pro from 2012, but then slower. However, it was faster in a PC under Windows 10, where we write about 8.4 GB / s with four SSDs in RAID 0 and 13, 4 could read.
Sonnet’s fanless card is designed for the Mac Pro, but does not achieve its maximum performance in it due to the slowing software RAID of macOS. 8 GByte / s helps a bit and is sure to be gladly accepted by every video creator. In our test of Apple’s Afterburner with several 8K streams, the card with four SSDs was not the limiting factor.
Best portable projector Buying Guide: Welcome to What Hi-Fi?’s round-up of the best portable projectors you can buy in 2021.
Projectors are typically neither convenient nor cheap. To get the most out of the best projectors you need to paint entire rooms black, buy yourself a screen, an AVR, a speaker package and possibly even have to fix a chunky mounting bracket onto the ceiling.
This is why portable and mini projectors are a better choice for many. There’s no need to replace your TV. Just pull out your portable when you want to go big and you can even take them around to friends’ houses for movie nights. What’s more, installing a portable projector is no more complicated than finding a flat surface or even a sheet hung in the garden and pointing the thing at it (though a dedicated screen is so much better).
A few years ago, these mini projectors were still hard to recommend despite their convenience. ‘Pico’ projectors had dim light sources that couldn’t do justice to colours or contrast, even in a darkened room.
Today’s portable projectors benefit from improvements to LED and laser light tech. And that means a bigger, brighter picture and no more worrying about having to replace the lamp after a year or so. Traditional halogen projector lamps tend to last 2000-3000 hours. LEDs last tens of thousands.
There’s no magic brand-new tech in the lower-end of the portable world, of course. If a projector fits in the palm of your hand, it will not be particularly bright nor kick out top notch detail. No micro projector works well during the day with the windows open either.
This is one reason our best portable projector round-up includes almost all flavours in this category. There’s a pick so small you could fit it in some large coat pockets. It is great for camping, travelling or for entertaining the kids without putting a TV in their room.
The newer “lunchbox” style projector is a better fit for many, though. They offer a decent compromise of portability and performance, and will likely have the better software extras, as these are real lifestyle tech buys.
Right at the top of the tree are projectors that blur the divide between normal and portable designs. They are only slightly smaller than some normal home projectors but have built-in speakers and other convenience features such as short-throw lenses. These mean the projector does not have to be as far from the screen to create a large, cinematic image, and they can be stowed away in the cupboard again once you’re done with your viewing.
Got all that? If that sounds like the kind of convenience and entertainment you’re looking for, then read on for our best mini projectors of 2021.
1. LG CineBeam HU80KSW
This all-in-one, do-it-all portable projector does it all well.
It’s not what you’d call ‘mini’ but the LG CineBeam has an integrated handle for easy carrying and is small enough to be easily hidden away in a cupboard when not in use.
That’s especially impressive when you consider it’s more or less an entire home cinema system: a 4K HDR picture, stereo sound, an array of smart sources, all in a unit you can carry like a holdall and set up wherever and whenever you might choose. Even the power cable is wound up inside the base, so there is really nothing you have to plug in if you don’t want to.
That’s the great beauty of the CineBeam: its versatility and intuitive simplicity. As long as you have a clean wall or ceiling upon which to throw a picture, you can have it up and running in a matter of minutes each time you use it.
Picture performance is strong: impressively crisp and detailed, with decent depth and natural hues. It is bright enough without being garish, vibrant enough to combat leaked sunlight. And it sounds surprisingly good by the standards of integrated speakers, too.
The only downside is the price, but if you want the best, you’re going to have to pay for it. Besides, you’ll find lots of more affordable options below.
Read our LG CineBeam HU80KSW review
2. Asus F1
Projects a cinematic image in dark rooms.
SPECIFICATIONS
Resolution: 1920 x 1080 | Type: DLP | Brightness: 1200 lumens | Throw ratio: 0.8:1 | Focus: Motorised AF | Zoom: Digital | Keystone correction: +/- 30 degrees | Dimensions: 25 x 75 x 21cm | Weight: 1.8Kg
Reasons to Buy
Decent DLP image
Solid light output
Engaging picture
Reasons to Avoid
No battery
Not the most portable design
The Asus F1 stretches the limits of what we might call a “portable projector”. It does not have a battery and you’ll need a rucksack to take it over to a friend’s house, but it is a very handy projector to take between rooms in your own home.
It weighs just 1.8kg, similar to some laptops, and has a short throw lens. This means it doesn’t need to sit as far from a wall or projector screen to produce a large image. A 1.4m distance gets you 80-inch movies.
It’s also less likely to get damaged when moved about as it uses an LED light array rather than a traditional lamp.
At this size you get much closer to the image quality of a traditional home projector. Its resolution is Full HD, 1920 x 1080 pixels, and the 1200 lumen brightness doesn’t need anything like the light-blocking preparation of a smaller model.
If you want to use a projector in the day time, the significantly brighter Epson EF100 is a better bet. But with the Asus F1 you get a much more cinematic image in a dark room. Colours have real DLP punch and the black level is more than respectable.
We’re not in the same class as JVC’s D-ILA range here, of course, but if you can project onto a grey wall or a white screen with black border, you’re looking at very enjoyable home cinema experience.
Unlike many more traditional projectors, the Asus F1 does not have lens shift or optical lens zoom, just digital zoom and keystone correction. Both limit picture quality so it’s a good idea to take out a tape measure to check it will suit your living room. You need some patience for the menu system too, as it can be very slow to respond.
3. Nebula Mars 2
A battery-powered, truly portable package that’s fun to use.
SPECIFICATIONS
Resolution: 1280 x 720 | Brightness: 300 lumens | Throw ratio: 1.2:1 | Focus: Motorised AF | Zoom: No | Keystone correction: Auto +/-40 degrees | Dimensions: 18 x 12 x 14cm | Weight: 1.8Kg
Reasons to Avoid
Not Full HD
Basic colour reproduction
The Nebula Mars 2 sits in a portable projector sweet spot. It is far from palm-sized, but has a synthetic leather carry strap and a shape similar to the Bang & Olufsen BeoLit 15 “lunchbox” wireless speaker. It’s cute.
This is easily the most fun portable projector in this group too. It has a battery that lasts up to four hours and Android rather than a basic menu system. The front-end is customised for use with the supplied remote, and has a dedicated app store rather than Google Play. But you can still download Netflix, BBC iPlayer and countless other apps to run direct from the Mars 2.
That includes games, but don’t get your hopes up. Most don’t run perfectly, although you can pair your phone and use its touchscreen like a laptop trackpad.
Image quality is respectable too. In a room with closed curtains and no lights switched on, the Mars 2 can produce a watchable image on a 100-inch screen. The projector dims significantly on battery power, but head to the settings menu and you can turn this off. It will simply last closer to two hours than the claimed four.
There’s no worrying about focus either as it has motorised autofocus. Sharpness is less than perfect and there’s some disparity to the sharpness across the image, but you’ll only notice if you look carefully. Its 720p resolution offers far better image detail than a basic 480p model and is a huge upgrade for gaming in particular. And you don’t need to look close to notice that.
The bad parts? Colour reproduction is not particularly good. It lacks finesse and vibrancy, and only minor image controls are available. And while larger than some, the Nebula Mars 2 still needs a partially light-controlled room to produce sufficient image contrast.
Read our Nebula Mars 2 review
4. Viewsonic M1+
A tiny projector with built-in Harman Kardon speakers.
SPECIFICATIONS
Resolution: 854 x 480 | Brightness: 300 lumens | Throw ratio: 1.2:1 | Focus: Manual dial | Zoom: No | Keystone correction: Veryical +/-40 degrees | Dimensions: 14.5 x 12.6 x 4cm
Reasons to Buy
Reasonable image in dim light
Speaker goes surprisingly loud
Reasons to Avoid
Low resolution and brightness
Poor focus control
Mini projectors don’t get much more convenient than the Viewsonic M1+. It’s tiny, and only weighs as much as four phones stacked in a pile. And it does come with wi-fi, a MicroSD card slot, plus USB Type-A and USB Type-C connectors.
The stand makes projecting an image from slanted surface, or onto angled walls, a cinch. Its speaker is the real surprise, though. While it sounds harsh and brash at maximum volume, the dual Harman Kardon speakers deliver enough volume for a movie night if you keep things sensible. The sound may only be that of mediocre budget bluetooth speaker, but it’s much better than that of most pint-size projectors.
Image quality is mixed, and not up to the traditional standards of TVs and projectors. That’s hardly surprising as resolution is very low at 854×480 pixels. Text looks terrible, but we are pleasantly surprised by how invisible the pixel structure is even when projecting at 100 inches. Faces look smooth rather than blocky, although naturally there’s limited fine detail. This is a DVD-quality projector, not an HD one.
The Viewsonic M1+’s focusing is fiddly too. It has a flimsy wheel, and the M1+ tends to change focus slightly as soon as your take your finger off the control. Getting a perfectly in-focus picture requires some finger gymnastics.
And, no surprise here, the Viewsonic M1+ needs a fairly dark room to achieve an acceptable image. No-one is likely to be bowled over by this projector. But it is compact, relatively affordable, sounds reasonable, has a three-hour battery life and does a fair job displaying SD-quality movies. If that’s all you require, it does the job.
MORE:
Best projectors 2021
Projector screens: everything you need to know
We use cookies on our website to give you the most relevant experience. By clicking “Accept”, you consent to the use of ALL the cookies.
This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.