heise + | 3Dfx and the triumph of 3D: A look back at the time of Voodoo and Glide

3Dfx had contributed significantly to the 3D boom with its Voodoo Graphics accelerators and the Glide interface. Retro fans are enthusiastic to this day.

3Dfx and the triumphant advance of 3D: A look back at the time of Voodoo and Glide In the third dimension Grateful environment Views This is how you can play 3Dfx games today Article in c’t 27 / 2018 read More than 20 J ahre is now the breakthrough of 3D graphics in computer games and brought a turning point for both PC games and hardware. Because not only in retrospect it was almost magical what happened 1996 did in the games and hardware market. A small, previously unknown company was preparing to become the determining force in the gaming area on the PC within a very short time.

Their products promised to make games not only more beautiful, but also faster – By no means a matter of course in the year 1996. Most of the other 3D cards, to avoid the word “accelerator” here, mostly delivered either prettier or faster images, but not both at the same time. With some, such as the Matrox Mystique, which is popular because of its high 2D signal quality, the player had no choice at all: bilinear texture filtering was missing in the chip’s repertoire, which is why it had to be completely foregone.

Every gamer therefore wanted to have a “Monster3D” in his PC and enjoy faster and more beautiful 3D graphics. The Voodoo card from Diamond Multimedia has become a synonym for the 3Dfx cards in Germany. With around 400 D-Mark (just under 200 non-inflation-adjusted euros) the pleasure was even comparatively affordable just a few weeks after the launch . But what was it about the company 3Dfx and their voodoo graphics and what possibilities are there to relive this fascination today?

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heise + | Scan slides with the Raspberry Pi

The digitization of slides is often tedious. It’s quick with this combination of modified slide projector and digital camera, which is automated by Rasp Pi.

Most of them have probably not made new slide recordings for a long time, but many still have hundreds or even thousands of photos slumbering in storage rooms – often with valuable memories. The problem: The digitization of slide recordings at companies is not really cheap, especially with large quantities. Slide scanners that you can buy work like conventional scanners, you can’t process more than a few slides at once, so the time required is extremely high. This leaves only a DIY solution: a slide projector with an upstream camera and central control by a Raspberry Pi Zero. The whole thing is built up more functionally and with minimal effort, because usually you only digitize your slide archive once and then you can dismantle the structure again.

If you have large quantities of slide recordings at home , usually also has the associated projector. This actually works according to a simple principle: the slide recording is illuminated by a strong light source and the resulting image is projected onto a screen. Instead of a screen, a self-made slide scanner requires a camera with a macro lens or at least a lens with a large focal length and extension rings or a macro adapter, which has a similar magnifying effect. You can find more information in the article “Alternative optics for the ESP 32 – CAM “.

A macro adapter can be a conventional Turn telephoto lens into a limited macro lens – this is definitely sufficient for the DIY slide scanner.

The image that would actually be projected is illuminated from behind by the projector lamp and can easily be taken as a digital photo with the camera and post-processed if necessary. So that the entire image can be recorded as fully as possible, the lens of the camera must of course be enlarged enough and close enough to the projector, as is the case with macro shots.

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heise offer: Free make-up articles for teachers

Under the motto “Teaching easier with understandable projects”, Make is launching a new offer aimed at teachers of MINT subjects. On our new website “Make Education” we are now making 5 free PDF articles available for download every month. The PDFs are selected articles from previous Make editions and contain projects that can be thematically well integrated into STEM lessons or in projects or project weeks.

It starts with articles for building a spectroscope from household resources, power generation with piezo and Peltier elements, a holographic microscope made of 3D printed parts and a Pi as well as magnetism experiments with ferrofluids.

In contrast to conventional MINT teaching materials offer many articles of the make content with current techniques and everyday relationships of the students such as smartphone, internet, social media, IoT, WLAN, 3D printing, sound, light, gaming, e-mobility, robotics, AI, etc.

The advantages of project-based learning lie in the effect of active action for a better learning process. Learning by doing, learning from experience promotes understanding of the topic instead of just accumulating knowledge about it. The learning process is experienced as a positive experience. The more successful and satisfied the students, the better and easier it is for the teachers.

In order to be able to download the PDFs for free, a one-time registration is required. A monthly newsletter informs you about new articles and in which subjects and age groups they fit.

In addition, Make is looking for committed teachers who want to h

Amazon Echo Dot 2020 review: It’s now the Echo Mini

(Pocket-lint) – The Echo Dot has been one of Amazon’s most successful devices. Thanks to a combination of low price and high practicality, many people have Echo Dots scattered around their home, providing a link to Alexa voice control and a whole lot more.

There’s a change in 2020, however, that sees the Echo Dot take on a new form. Is this fourth-generation version the Echo Dot we know and love, or is this now a whole other thing?

Design

  • Finishes: Charcoal, Glacier White, Twilight Blue
  • Dimensions: 100 x 100 x 89mm / Weight: 328g
  • Spherical design

The big change for the Echo Dot is a shift to a spherical design, so it’s like a little ball. It’s mostly covered in fabric – like previous Echo devices – but now there’s no hard plastic top – just raised buttons for those familiar controls of volume, privacy and the action button.

Pocket-lint

The whole surface isn’t covered in fabric though. There’s a distinct back and front to this device, with the power and 3.5mm connections in the rear, with a plastic base sloping diagonally and encapsulating this rear plugged area.

Those controls aren’t exactly on the top either, they are positioned slightly towards the rear, so they are visible when you look down on the Dot, but if you’re looking at it across the room on a shelf, they’re out of your eyeline, which is a tidy bit of design.

The Echo Dot has been growing in both size and stature over its lifetime. From the original,which was a hard plastic puck, to the expanded fabric wrapped puck, to this new sphere. Although it’s now taller, the footprint essentially stays the same – well, ok, so the older Echo Dot is a millimetre less in diameter, but you’d never know.

But there’s a big perceptual difference. Older Echo Dots have all been discreet, the sort of thing you could slip onto a shelf for convenience. That was certainly the original premise, because the first-gen Echo Dot wasn’t great as a speaker, but was great for adding Alexa to a room or to an existing set of speakers.

Pocket-lint

The revised third-gen version – which remains on sale from Amazon – boosted the sound quality considerably. It was better as a speaker in its own right, which leads up to the latest generation of Echo Dot. It now feels like a mini speaker, rather than an extension of the Alexa ecosystem in your home.

  • Echo Dot fourth-gen vs Echo Dot third-gen: What’s the difference?

That’s likely driven by that fact that many people didn’t buy the Echo and just opted for the Dot instead. Fortunately, the new Echo Dot will better fulfil that need, but we can’t help feeling that the change is mostly driven by design fatigue, so that it looks new and exciting, to invigorate the Dot market again.

There’s also been a change in the location of Alexa’s light ring. This will show you that Alexa is listening, or light up to tell you there’s a notification, or to show that the Dot is in privacy mode, i.e. not listening.

The light ring is now on the bottom – and we actually like the change, as it illuminates the surface it’s sitting on. That obviously works best on lighter surfaces where that blue pops a little more.

Sound and performance

  • 1.6-inch speaker
  • 3.5mm output

With a new design, the Echo Dot is different acoustically too. The previous generation, with a flat design, essentially had a single speaker that fired downwards. The new Echo Dot has the same single 1.6-inch speaker, but now it fires diagonally upwards.

Amazon

Having a larger enclosure means the speaker has more space and the design is better optimised for sound than it was before. There’s noticeably less vibration at higher volumes, for example. Side-by-side the old Echo Dot sends more vibration through its base than the new model does and that’s evident through to higher volumes, where the new Echo Dot is much clearer and less distorted.

The sound difference isn’t huge; the third-gen Echo Dot was a great performer for its size and at lower volumes, there’s little really difference between the two – not enough to warrant replacing third-gen Dots with the new fourth-gen.

But that changes as the volume increases, as the fourth-gen Echo Dot performs better once it’s louder. You might be able to get away with using a single Echo Dot as a kitchen speaker, for example, but we’d still rather take a full-sized Echo, which is a step above in terms of sound performance – especially if it’s going to be a regular for music playback.

Pocket-lint

The Echo Dot retains the ability to stereo pair or group, which is a great option, so if you have two Echo Dots on your desk, for example, it’s a great solution for a bedroom or office where big volume isn’t always going to be necessary.

You can change the sound to your preference via the Alexa app, with sliders for bass, mids and treble.

Alexa and voice controls

  • Alexa app setup
  • Full voice control
  • Smart home controls

The Echo Dot connects to Wi-Fi and is setup via the Alexa app on your phone. It’s a simple process as all you have to do is open the app, enter the devices tab and hit the ‘+’ button. Your Echo Dot will be found and then you’ll be asked a couple of questions, such as being able to allocate it to a room in a particular location.

These location elements are designed to ensure that the Echo Dot knows what else is around it. For example, if you put it in your office where you also have some Alexa-compatible smart lights, you’ll be able to say “Alexa, turn on the lights” and it’ll know that you’re talking about the lights in that specific room.

Pocket-lint

There’s 2.4GHz and 5GHz Wi-Fi support and we found the connection to be good with no problems hooking up to our home network and solid performance thereafter.

The voice response from the fourth-gen Echo Dot also appears to be slightly better than the older Echo Dot third-gen, which sometimes would be a little unresponsive at higher volumes.

Otherwise, the feature set of the new Echo Dot is very much the same as the previous generation and of all other Echo devices. Once you’re signed into your device via the Alexa app, it will know who you are and be able to use any Skills you have enabled via the Alexa app.

  • 4 top cameras to get you started on your home security journey (promo)

This will give you voice control over a huge range of smart home devices, which is how many people use their Echo devices. That might be enabling cameras, turning on lighting, changing the heating, or switching on plugs.

Pocket-lint

Alexa continues to provide information on command, basically able to answer any question you throw at it, although we’d say that Google Assistant is occasionally a little smarter, able to give a slightly better response. Once thing we would caveat that with it that Alexa sounds better – Google Assistant’s audio often comes with a hiss (something you can hear on devices like the Nest Audio), but Alexa seems clearer to us.

When it comes to music, Alexa supports a wide range of music services, from Amazon’s own offering, through Spotify, Apple Music, Deezer, TuneIn, BBC Sounds, and much more.

Verdict

The fourth-gen Amazon Echo Dot, freshly redesigned for 2020, boosts the performance of the range by a small degree, while offering a change – something slightly different for those who haven’t been tempted by the Echo Dot in the past. But the feature set is so close that there’s little need to move to this newer device if you already have a third-gen Dot.

Where the 2020 Echo Dot is likely to find favour is with those who want a compact speaker for a small space. Acoustically, it’s now better suited than previous Echo Dot devices, so functions better as a standalone speaker for music. It’s not so much the Echo Dot any more – it’s more of an ‘Echo Mini’.

The Echo Dot with Clock is ultimately a little more interesting – as a bedside option – but the new Echo Dot retains that appeal as a compact speaker offering access to one of the best smart assistant ecosystems on the market.

Alternatives to consider

Pocket-lint

Echo Dot third-gen

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The third-gen Echo Dot is a classic. It looks good, it’s compact – and just as smart as the fourth-gen model, even if it’s not as ambitious when it comes to sound quality. You’re also likely to find it for less money.

  • Read our review
Pocket-lint

Google Nest Mini

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A different system with Google Assistant instead, the Nest Mini is compact, has reasonable sound quality, and is just as smart as the Echo Dot – but in some cases, Google Assistant gives better responses.

  • 4 top cameras to get you started on your home security journey (promo)
  • Read our review

Writing by Chris Hall. Editing by Mike Lowe.