Hackaday Prize Entry: Aesthetic As Hell

Microsoft Bob was revolutionary. Normally you’d hear a phrase like that coming from an idiot blogger, but in this case a good argument could be made. Bob threw away the ‘files’ and ‘folders’ paradigm for the very beginnings of virtual reality. The word processor was just sitting down at a desk and writing a letter. Your Rolodex was a Rolodex. All abstractions are removed, and you’re closer than ever to living in your computer. If Microsoft Bob was released today, with multiple users interacting with each other in a virtual environment, it would be too far ahead of it’s time. It would be William Gibson’s most visible heir, instead of Melinda Gates’ only failure. Imagine a cyberpunk world that isn’t a dystopia, and your mind will turn to Microsoft Bob.

Metaverse Lab is aesthetic as hell
Metaverse Lab is aesthetic as hell.

Not everyone will laugh at the above paragraph. Indeed, some people are trying to make the idea of a gigantic, virtual, 3D space populated by real people a reality. For the last few years, [alusion] has been working on Metaverse Lab as an experiment in 3D scanning, virtual web browsers, and turning interconnected 3D spaces into habitats for technonauts. The name comes from Snow Crash, and over the past twenty years, a number of projects have popped up  to replicate this convergence of the digital and physical. By integrating this idea with the latest VR headsets, Metaverse Lab is the the closest thing I’ve ever seen to the dream of awesome 80s sci-fi.

I’ve actually had the experience of using and interacting with Metaverse Lab on a few occasions. The only way to describe it is as what someone would expect the Internet would be if their only exposure to technology was viewing the 1992 film Lawnmower Man. It works, though, as a completely virtual environment where potential is apparent, and the human mind is not limited by its physical embodiment.

Hackaday Prize Entry: Autonomous Kayaks

[Barry] has an expedition planned. He’s going to be exploring coastlines, inlets, and other shallow waters where even small ROVs are too big. [Barry] wants an autonomous vehicle on this expedition, though, and that means he must build his own. This led to The Julius Project, repurposed kayaks, and all the techniques that go into making proper maritime electronics.

The first question [Barry] gets is, ‘why kayaks?’ A quick cruise around Craigslist is enough to answer that – they’re cheap, and they’re available in almost infinite variety from big touring kayaks to small play boats, all built for different conditions and expeditions. With a few motors and modular parts to this build, [Barry] has an autonomous aquatic vessel built for every condition imaginable.

Right now, [Barry]’s focus is getting the propulsion working. This comes in the form of a few brushless motors bolted to the underside of the kayak. A tethered test was very successful, demonstrating this tiny boat can turn on a dime. Integration with an autopilot is coming, but until then [Barry] has a neat little boat puttering around a river. You can check out a video of that below.

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Hackaday Prize Entry: Characterizing LED And Laser Diodes

Needless to say, we’re fascinated by LEDs, laser diodes, and other blinkies. Although we can get just about any light emitting thing, the data sheets aren’t always accurate or available. For his Hackaday Prize entry, [Ted] is building a device to characterize the efficiency, I/V curve, and optical properties of all the blinkies. It’s a project to make glowy stuff better, and a great entry for the Hackaday Prize.

The inspiration for this project came from two of [Ted]’s projects, one requiring response curves for LEDs, and laser diodes for another. This would give him a graph of optical output vs. current, angular light output distribution, and the lasing threshold for laser diodes. This data isn’t always available in the datasheet, so a homebrew tool is the only option.

The high-level design of this tool is basically a voltmeter and ammeter measuring a glowy diode, producing IV curves and measuring optical output. That takes care of all the measurements except for the purely optical properties of a LED. This is measured by a goniometer, or basically putting the device under test on a carriage attached to a stepper motor and moving it past a fixed optical detector.

If you’re wondering why this device is needed and a simple datasheet is insufficient, check this out. [Ted] measured the efficiency of a Luxeon Z LED, and found the maximum efficiency is right around 10mA. The datasheet for this LED shows a nominal forward current of 500mA, and a maximum of 1000mA. If you just looked at the datasheet, you could easily assume a device powered for years by a coin cell would be impossible. It’s not, and [Ted]’s device gave us this information.

Hackaday Prize Entry: Boots And Cats And Boots And Cats

Electronic drums are pricey, but the drums themselves are actually very easy to make. By simply putting a few piezos on some rubber mats, you can make a set of electronic drums. The real trick, and the expensive bit, is in the drum module. This module has inputs for the high hat, snare, toms, and bass drum to turn the repetitive thwaking of a stick on a rubber mat into drum sounds.

For his Hackaday Prize entry, [Jeremy] isn’t building a set of electronic drums. He’s building a drum module, complete with touchscreen interface and a GUI.

This isn’t [Jeremy]’s first go at building a drum module – his first implementation was RaspiDrums, an add-on for the Raspberry Pi that used accelerometers instead of piezos. The software works well enough with a USB sound card to serve as a set of real electronic snare.

Now [Jeremey] is moving up to a full kit, and the power of the Raspberry Pi means he can easily add a touch screen to his device. Right now the efforts are going into building a GUI using Gtkmm, and wrapping everything up into a front panel that makes sense and is easy to use. The drums themselves are a solved problem, making this Hackaday Prize entry a fantastic polish on an already great project.

Hackaday Prize Entry: An Electric Bike And A Dashboard

Over the last few years, powerful brushless motors have become very cheap, batteries have become very powerful, and the world of quadcopters has brought us very capable electronic speed controls. Sounds like the perfect storm for a bunch of electric bike hacks, right? That’s what [bosko] is doing for his Hackaday Prize Entry. He’s building an e-bike with a big motor and an electronic dashboard, because a simple throttle switch would never do.

There are two parts to [bosko]’s bike, with the front brain box consisting of GPS, an OLED display, analog throttle, and a few wireless modules to connect to the other half of the system under the seat.

The drive section of this e-bike is as simple as it gets. It’s just a big brushless outrunner motor suspended directly above the rear tire, without any other connection. [bosko] has gone with the simplest power transmission system here, and is slightly wearing out the rear tire in the process. It works, though, and a few of the commentors over on Hackaday.io say it reminds them of the French Solex bike. We’re thinking this bike is more of what a riquimbili would be if Hobby King had a Cuban warehouse, but it seems to work well for [bosko] and is a great entry to the Hackaday Prize.

Hackaday Prize Entry: Adblock For TV

Contact, the 1985 book by Carl Sagan, was significantly better than the movie. Five people went through the wormhole, three machines were made (in Russia, Wyoming, and a third on Hokkaido), Erbium did something, and the novelization provided much better worldbuilding. One of the more interesting characters in the book was H.R. Haddon, the megalomaniacal business man, made his first million designing a chip that would block advertisements on TV. The book strongly suggests this commercial-blocking chip was a purely analog device, a concept that would have been an amazing abuse of NTSC produced by a damn fine engineer.

Now, even though cord cutting is commonplace and streaming is taking over, there’s still commercials on Hulu. In a few months, I’ll have to pay $5 a month to watch Star Trek with commercials. There is obviously a market for ‘adblock for TV’, and that’s what [PixJuan] is doing for his Hackaday Prize entry.

[Juan]’s device is a basically an HDMI switch with a remote that’s pressed every time the ads start to show on a broadcast. This switch will change the input of the HDMI switch from a cable box to a Raspberry Pi and play a short video clip or something else that isn’t selling you crap. When the Raspi is done, the switch goes back over to the original input.

With a bit of computation in this adblock-for-TV device, there are a few more options for ad detection. The Raspberry Pi could build a database of when ads play and for how long, depending on the channel. This is a great project that has a lot of potential to use some interesting techniques like computer vision and machine learning for the goal of removing commercials before they start.

Hackaday Prize Entry: A One Hand Bottle Opener

For the next month, the Hackaday Prize is all about Assistive Technologies. You would think this means exoskeletons, 3D printed prosthetics, and better wheelchairs, and you’d be right. This project in the running for the Assistive Technologies portion of the prize isn’t what you would expect. It’s a brilliantly simple way to open a water bottle with one hand. Think of it as the minimum viable project for assistive technologies, and a brilliant use of a few 3D printed parts and some metric bolts.

The OHBO – the One Hand Bottle Opener – is just a simple 3D printed ring that fits over a water bottle. There’s a small arm attached with a few bolts that lock this ring onto the bottle. With this bottle opener attached, it only requires a simple twist of the wrist to open a screw-top bottle.

As you can see in the video below, this would be a fantastic device for anyone with one hand to keep around the fridge. Of course, like all good Hackaday Prize entries, all the files to recreate this build are available, with just a few bits of hardware required to complete the build.

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