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A Deep Dive into Using PIO and DMA on the RP2350 <img width="800" height="450" src="image alt="[Piers] explains his code"/>Here’s a fun rabbit hole to run down if you don’t already have the RP2040/RP2350 PIO feather in your cap: how to serve data without CPU intervention using PIO and
Retrotechtacular: The $550K Video Conferencing System Used to Make Bee Movie <img width="800" height="450" src="image alt="Jerry Seinfeld dressed up as a honey bee promoting his film Bee Movie."/>The modern office environment has shifted in recent years. Employees are routinely asked to collaborate with co-workers half way around the globe and be camera ready, or whatever passes for https://hackaday.com/2025/11/30/retrotechtacular-the-550k-video-conferencing-system-used-to-make-bee-movie/ https://hackaday.com/2025/11/30/retrotechtacular-the-550k-video-conferencing-system-used-to-make-bee-movie/
Raise Bikes to the Heavens with Humble Garage Door Opener <img width="800" height="450" src="image alt="bikes are shown raised from the floor from the garage opener lift"/>Biking can be an incredibly rewarding hobby, but what do you do with all of your expensive pieces of metal and composite when you aren’t hitting the trails? They take
Magnus Effect Drone Flies, Looks Impossible <img width="800" height="450" src="image alt=""/>By now we’re all familiar with the quad-rotor design most popular among modern drones, and of course there are many variants using more or less propellers and even fixed-wing drones
DIY Light Panels Work With Home Assistant <img width="800" height="450" src="image alt=""/>There are a few major companies out there building colorful LED panels you can stick on your wall for aesthetic purposes. Most commercial options are pretty expensive, and come with
On the Benefits of Filling 3D Prints With Spray Foam <img width="800" height="445" src="image alt=""/>Closed-cell self-expanding foam (spray foam) is an amazing material that sees common use in construction. But one application that we hadn’t heard of before was using it to fill the
Building a Simple Ribbon Synth <img width="800" height="450" src="image alt=""/>The usual input device for playing a synthesizer is the good old piano keyboard. However, you don’t have to stick to such pedestrian interfaces when making music. [Daisy] has a
Instant Sketch Camera Is Like A Polaroid That Draws <img width="800" height="450" src="image alt=""/>These days, everyone’s got a million different devices that can take a passable photo. That’s not special anymore. A camera that draws what it sees, though? That’s kind of fun. That’s
3D Printing for the Hospital Setting <img width="800" height="450" src="image alt="3D printed jaw with fake muscle attached"/>Surgery is hard, there is a reason why school is so long for the profession. Making the job easier and smoother for both patients and surgeons is valuable for all
USB DAC Comes With Graphic EQ <img width="800" height="450" src="image alt=""/>[shiura] had a problem — they wanted a nice high-quality audio output for their computer, but they didn’t fancy any of the DACs that were readily available on the market.