2+ hour ago (290+ words) [[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 "read more [[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 DMA on the RP2350. If you don't know much about the RP2040 or RP2350 here's the basic run down: the original Raspberry Pi Pico was released in 2021 with the RP2040 at its heart, with the RP2350 making its debut in 2024 with the Pico 2. Both microcontrollers include a feature known as Programmed I/O (PIO), which lets you configure tiny state machines and other facilities (shift registers, scratch registers, FIFO buffers, etc) to process simple I/O logic,…...

5+ hour ago (364+ words) [Jerry Seinfeld dressed up as a honey bee promoting his film Bee Movie.]Jerry Seinfeld dressed up as a honey bee promoting his film Bee Movie. " data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/Jerry-Bee2.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/Jerry-Bee2.png?w=800" />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 "read more [Jerry Seinfeld dressed up as a honey bee promoting his film Bee Movie.]Jerry Seinfeld dressed up as a honey bee promoting his film Bee Movie. [halovideo_detail]The Halo Studio was a collaboration between HP and Dreamworks that was used during the production of Bee Movie. Studio heads at Dreamworks thought it necessary to install the HP teleconferencing solution inside the New York office of Jerry Seinfeld, the writer of the film, as to allow him to avoid…...

8+ hour ago (295+ words) Few of us keep big old cathode ray tubes in the house anymore, but we can still appreciate the form factor of the classic TV. Indeed, the Tinytron from [t0mg] "read more Few of us keep big old cathode ray tubes in the house anymore, but we can still appreciate the form factor of the classic TV. Indeed, the Tinytron from [t0mg] is a neat little tchotchke in this vein " a miniature TV that you could just about fit on a keyring. [t0mg] wanted this project to be quick and easy to put together. It starts with an ESP32-S3-LCD-1.69 from Waveshare. It's an all-in-one dev module which combines the microcontroller with a small screen right out of the box. You just have to solder a single six pin header to hook it up with an SD card reader and battery, and you're done with…...

11+ hour ago (288+ words) [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 "read more [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 up space that you could use for more bikes! [Chaz] figured there had to be a better way and discovered the unlikely solution of the humble garage opener. Garage doors are made to lift high with moderate weight, exactly what one would expect from a bike lift. If you have high ceilings in your…...

14+ hour ago (269+ words) It's easy to build big wooden furniture if you have a massive industrial CNC router, but few of us are so lucky. However, you can still build sizable stuff with "read more It's easy to build big wooden furniture if you have a massive industrial CNC router, but few of us are so lucky. However, you can still build sizable stuff with a smaller router if you know what you're doing. [Aribabox] shares some useful tricks and techniques for building large workshop cabinets on smaller machines. The key to doing this well is modularity. [Aribabox] shows off how to build excellent workshop drawers in pieces using a stackable design. Rather than having to cut out one huge side panel to cover the whole stack of drawers, each drawer can have its own side panel that easily fits on a smaller…...

17+ hour ago (205+ words) 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 "read more 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 that can fly autonomously. We've even seen drones that convert from rotorcraft to fixed-wing mid flight. But there are even more esoteric drones out there that are far more experimental and use even more bizarre wing designs that look like they shouldn't be able to fly at all. Take [Starsistor]'s latest design, which uses a single motor and an unconventional single off-center wing to generate lift. [Starsistor] went through a number of iterations before finally getting this…...

20+ hour, 1+ min ago (303+ words) Seven-segment displays are one of the most ho-hum ways to display the time. They were cool for a little bit in the 70s, but by now, they're a little bit "read more Seven-segment displays are one of the most ho-hum ways to display the time. They were cool for a little bit in the 70s, but by now, they're a little bit old hat. That is, unless you get weird with it. This holographic seven-segment clock from [mosivers] qualifies neatly in that category. The first step was to make the holographic segment displays, because they're not really something you can just buy off the shelf. [mosivers] achieved this by using a kit from LitiHolo, which enables you to create holograms by shooting a laser at special holographic film. Only, a few upgrades were made to use the kit with a nicer red…...

23+ hour ago (337+ words) The hoverboard, one of the teen crazes of the last decade, is both a marvel of technology and a source of hacker parts that have appeared in so many projects "read more The hoverboard, one of the teen crazes of the last decade, is both a marvel of technology and a source of hacker parts that have appeared in so many projects on these pages. It contains an accelerometer or similar, along with a microcontroller and a pair of motor controllers to drive its in-wheel motors. That recipe is open to interpretation of course and we've seen a few in our time, but perhaps not quite like this steampunk design from [Skrubis]. It claims a hoverboard design with no modern electronics, only relays, mercury switches, and neon bulbs. The idea is that it's a hoverboard from 1884 using parts available in…...

1+ day, 2+ hour ago (311+ words) 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 "read more 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 certain limitations in how they can be controlled. [Smart Solutions For Home] has whipped up a flexible DIY design for decorating your walls with light that is altogether more customizable. In this case, the DIY light panels ape the hexagonal design made popular by brands like Nanoleaf. In this case, each hexagon panel runs an ESP32 microcontroller, which controls a series of WS2812 addressable LEDs. This allows each panel to glow whatever color you like, and they're arranged in an…...

1+ day, 5+ hour ago (427+ words) 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 "read more 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 internal voids of 3D printed objects. As argued by [Alex] in a half-baked-research YouTube video, this foam could be very helpful with making sure that printed boats keep floating and water stays out of sensitive electronic bits. It's pretty common knowledge by now that 3D printed objects from FDM printers aren't really watertight. Due to the way that these printers work, there's plenty of opportunity for small gaps and voids between layers to permit moisture to seep through. This is…...