diy projects
Self-Driving 1/48 Scale Train Runs on a Supercap and IR Sensors
A 1/48 scale locomotive packs a supercapacitor, boost converter, and IR receiver so it can stop, wait, and reverse on its own. Here's how…
diy projects
Nipkow Drum 3D Display: 1884 TV Tech Meets Fast LED Matrix Panels
A spinning drum with a spiral of holes plus 22,500 fps LED panels gives glasses-free 3D. Here's how James Brown's Nipkow display works and…
diy projects
Pocket Linux Messenger Built From a $20 MF800 4G Hotspot
A $20 MF800 hotspot, a thumb keyboard, and a Sharp Memory Display become a pocket Linux messenger with 4G. Here's the parts list and…
diy projects
Sudo-Pi Zer0: A Raspberry Pi Zero 2 W Handheld Linux Terminal
A maker built a pocketable Linux terminal around the Pi Zero 2 W, with a custom carrier PCB, keyboard, USB hub and battery. Schematics…
diy projects
Prop-Maker FeatherWing: Add Lights, Sound and Motion to Props
One FeatherWing puts a 3W class-D amp, a NeoPixel port, an RGB LED driver and an accelerometer on your Feather, so a prop reacts…
diy projects
Robot Poker Chips and Heated Dice: Engineering a Casino Cheat
Mark Rober invited makers to beat his casino with hardware. A self-driving poker chip, wax-loaded dice and a wearable card counter were the result.
diy projects
A Raspberry Pi 5 E Ink Frame That Paints the Birds It Hears
A microphone under the eaves, a Raspberry Pi 5 running BirdNET locally, and an A4 E Ink panel that redraws itself with 1800s bird…
diy projects
Build a Pocket Signal Generator With the AVR16EB28 and an OLED
An AVR16EB28, a 4.194304 MHz crystal and a spare pair of I/O lines make a 2 Hz to 33 MHz square-wave signal generator that…
diy projects
Brass Tubing Is the Frame and the Ground in This ESP32 Handheld
No PCB, no printed shell. Huy Vector bent 2 mm brass tubing into a handheld console frame and used the metal itself as the…
diy projects
No CPU, No Software: This Neural Net Lives Inside an Artix-7 FPGA
A Basys 3 FPGA recognizes handwritten digits in half a millisecond with no processor, no OS, and no inference library. Just 25,888 weights turned…
diy projects
This NFC Business Card Lights Its LEDs With Borrowed Phone Power
Kevin Tang's PCB business card lights up with no battery on board, pulling about 5 mA from the phone's own 13.56 MHz NFC field.
diy projects
Seeed’s reComputer RK3576 Kit Runs YOLO11 at 80 FPS for $219
Seeed's new RK3576 dev kit packs a 6 TOPS NPU, a Pi-compatible 40-pin header and an optional 20 TOPS accelerator. Here's whether your build…