GETMusic Uses Machine Learning To Generate Music, Understands Tracks

Music generation guided by machine learning can make great projects, but there’s not usually much apparent control over the results. The system makes what it makes, and it’s an achievement if the results are not obvious cacophony. But that’s all different with GETMusic which allows for a much more involved approach because it understands and is able to create music by tracks. Among other things, this means one can generate a basic rhythm and melody first, then add additional elements to those existing ones, leaving the previous elements unchanged.

GETMusic can make music from scratch, or guided from examples, and under the hood uses a diffusion-based approach similar to the method behind AI image generators like Stable Diffusion. We’ve previously covered how Stable Diffusion works, but instead of images the same basic principles are used to guide the model from random noise to useful tracks of music.

Just a few years ago we saw a neural network trained to generate Bach, and while it was capable of moments of brilliance, it didn’t produce uniformly-listenable output. GETMusic is on an entirely different level. The model and code are available online and there is a research paper to accompany it.

You can watch a video putting it through its paces just below the page break, and there are more videos on the project summary page.

Continue reading “GETMusic Uses Machine Learning To Generate Music, Understands Tracks”

A Nifty 3D Printed RC Car

Once upon a time, a remote controlled (RC) car was something you’d buy at Radio Shack or your local hobby store. These days, you can print your own, complete with suspension, right at home, as this project from [Logan57] demonstrates.

The design uses standard off-the-shelf hobby-grade components, with a brushed motor and controller for propulsion, and small metal gear servo for steering. The latter is a smart choice given there’s no servo saver in the design. Save for the fasteners and bearings, all the other parts are 3D printed. The hard components are produced in PETG or PLA, while flexible TPU is used for both the tires and the spring elements in the suspension system. It’s a double-wishbone design, and should serve as a good education should you later find yourself working on a Mazda Miata.

Building your own RC car isn’t just fun, it opens up a whole realm of possibilities. Sick of boring monster trucks and race cars? Why not build a 10×10 wheeler or some kind of wacky amphibious design? When you do, we’ll be waiting by the tipsline to hear all about it. Video after the break.

Continue reading “A Nifty 3D Printed RC Car”

Running A Modern Graphics Card In A 33 MHz PCI Slot

If you ever looked at a PCI to PCIe x16 adapter and wondered what’d happen if you were to stick a modern PCIe GPU in it, the answer apparently is ‘it works’ according to an attempt by [Circuit Rewind]. As long as you accept needing to supply external power with even a low-end GT 1030 card – as the PCI slot cannot provide enough power – and being limited to a single PCIe lane. This latter point isn’t so much of an issue as a single PCIe lane offers more bandwidth than the (shared) PCI bus anyway.

Despite the somewhat improvised setup, the GT 1030 card provided a decent 1080p experience in a range of games, after removing half of the 8 GB of system RAM before the configuration would work, probably due to VRAM mapping issues. Since the mainboard used also offered PCIe, the same card was run in a PCIe x4 slot, as well as in an x1 configuration, both with noticeably higher performance and putting the ‘why’ in ‘try’.

Perhaps unsurprisingly, a RTX 3080 also booted fine with external power and only 4 GB system RAM installed. Despite the PCIe x1 link, the system was able to finish a 3D benchmark and play Doom 2016, but with only 4 GB of system RAM and an old Athlon quad-core CPU, it was a terrible experience. Perhaps the most fascinating lesson to learn from this is that PCI and PCIe are amazingly compatible with only a simple translation bridge, even if high-performance graphics aren’t quite what PCI was meant for. After all, that’s why we got cursed with AGP for many years.

Continue reading “Running A Modern Graphics Card In A 33 MHz PCI Slot”

This Month’s World’s Largest Wind Turbine Goes Operational

A new wind turbine installed in the Taiwan Strait went online last week, as part of the Fujian offshore wind farm project by the China Three Gorges Corporation (CTG). The system is the MySE 16-260, designed by the Ming Yang Wind Power Group, one of the leading manufacturers of wind turbines in the world. The numbers are staggering, the 16MW generator is projected to provide 66 GWh (gigawatt-hours) to the power grid annually. And this is a hefty installation, with a 260 m rotor diameter ( three each 123 m blades ) sitting atop a 152 m tower. The location is both a blessing and a curse, being an area of the Pacific that experiences Beaufort level 7 winds ( near gale, whole trees in motion ) for more than 200 days per year. Understandably, the tower and support structures are beefy, designed to survive sustained winds of 287 km/h.

This 16 MW installation surpasses the previous record holder, announced this January — the Vestas V236-15.0MW turbine with 115.5 m blades, located in Denmark’s Østerild Wind Turbine Test Center. But wait … Ming Yang also announced in January their new 18 MW turbine with 140 m long blades.

We imagine that there will eventually be a natural plateau, where the cost of the next humongous installation approaches or exceeds that of multiple smaller ones. Or will these multi-megawatt turbine systems just keep leapfrogging each other, year after year? Let us know your thoughts in the comments below.

3D-Printed RC Skid Steer Is Cute Construction Machinery Done Right

Skid steers are great fun if you get to drive one on a construction site. [ProfessorBoots] has long been a fan of the diminutive diggers, and decided to make a 3D-printed version for his own pleasure.

The build uses a chassis printed in several colors which adequately recreates the charms of a full-sized skid steer. The brains of the operation is an ESP32, which receives commands over WiFi for remote control. A pair of geared N20 brushed motors are driven from a small H-bridge controller, each one driving one side of the skid steer. A toothed belt was 3D printed to allow each motor to drive two wheels on one side. Meanwhile, a pair of servos are charged with both lifting and tilting the bucket. Yes, you heard correctly – you can actually pick up and carry objects around your desk with this thing.

It’s a neat build and could be your introduction into the world of RC construction machines. Video after the break.

Continue reading “3D-Printed RC Skid Steer Is Cute Construction Machinery Done Right”

Workshop Dust Manifold Spreads The Suction Around

Let’s say you’re doing lots of woodwork now, and you’ve expanded your workshop with a few big tools. You’re probably noticing the sawdust piling up awfully quick. It would be ideal to have some kind of collection system, but you don’t want to buy a shop vac for every tool. This simple manifold from [Well Done Tips] is the perfect solution for you.

It’s a basic rig at heart, but nonetheless a useful one. It consists of a plywood frame with a shuttle that slides back and forth. The suction hose of your shop vac attaches to the shuttle. Meanwhile, the frame has a series of pipes leading to the dust extraction ports of your various tools around the shop. When you power up a tool, simply slide the manifold to the right position, and you’re good to go. Magnets will hold it in place so it doesn’t get jostled around while you work.

It’s a much cheaper solution than buying a huge dust extraction system that can draw from all your tools at once. If you’re just one person, that’s overkill anyway. This solution is just about sized perfectly for small home operators. Give it a go if you’re tired of sweeping up the mess and coughing your lungs out on the regular. Video after the break.

Continue reading “Workshop Dust Manifold Spreads The Suction Around”

A wooden spin coating machine sitting on a desk

Hackaday Prize 2023: Homebrew Spin Coater Makes Micrometer-Thin Layers

One of the great things about the Gearing Up challenge of the 2023 Hackaday Prize is that it lets you discover tools that you don’t encounter every day. We had never given much thought to spin coaters, for example, until we saw [Jeroen Delcour]’s neat homebrew example. As it turns out, spin coating has lots of applications in fields like optics, semiconductor manufacturing or even art projects, where a thin, even layer of a material is required on top of a flat substrate.

The basic idea behind a spin coater is simple: you dispense a few drops of a solution containing the material to be deposited on top of the thing you want to coat, then spin the thing around at a constant speed. The balance between the centripetal force and the liquid’s surface tension ensures that the liquid turns into a film with a consistent thickness all across the substrate. The solvent evaporates, and you’re left with a nice solid layer just a few microns thick.

[Jeroen] built his spin coater out of a brushless DC drone motor, a programmable motor controller, and an ESP32. A rotary pushbutton and an OLED form the user interface, allowing the user to select the speed and spin times. The electronics are all mounted inside a laser-cut wooden enclosure, with the motor sticking out the top, surrounded by a 3D-printed splash guard.

Professional spin coating equipment typically comes with a vacuum chuck to hold the sample in place, but [Jeroen] wasn’t too excited about implementing vacuum systems on a spinning platform and decided instead to simply clamp down the sample using screws in a laser-cut piece of acrylic. This works well enough, and is easy to customize for different sample sizes.

In the video embedded below, [Jeroen] experiments with applying a layer of silicone rubber onto a PCB. Spin coating is an essential step when you’re making your own semiconductor devices such as solar cells, though you might also need more complicated equipment such as an electron microscope. [Jeroen]’s spin coater is at least able to process much larger objects than one we saw earlier.

Continue reading “Hackaday Prize 2023: Homebrew Spin Coater Makes Micrometer-Thin Layers”