diy projects
Build a Raspberry Pi Iris Colour Detector with OpenCV
A Raspberry Pi 3 B+, a Camera Module 3 and OpenCV sorted 350 science-fair visitors' eye colours into seven categories. Here is how the…
diy projects
Teardown 2026: 450 Hardware Hackers Took Over Jupiter Hotel
Crowd Supply's Teardown 2026 packed 41 talks and 47 demo tables into one hotel. Here are the embedded, USB-C PD, and ESP32 bits worth…
diy projects
This Arduino Nano-Sized Board Packs a 300 MHz Cortex-M7 Chip
Magmabow squeezed a 300 MHz ATSAME70 Cortex-M7 into an Arduino Nano footprint, and the BGA routing trick he used is worth stealing.
diy projects
This $155 Open-Source 6-DoF Stylus Replaces $5,000 Mocap Rigs
Aalto University's open-source Lighthouse Stylus tracks position and tilt to under 1 mm for about $155 in parts, against $5,000+ for commercial mocap.
diy projects
Reverse Engineering a Cotton Candy Machine’s Robot Brain
A $6,400 cotton candy vending machine refused to run offline. One maker used ADB, SQLite and a patched APK to cut the cord and…
diy projects
Motion-Reactive LED Devil Horns Built on an RP2040 Prop Feather
Paper-mache horns lined with 4 mm NeoPixel strip, an RP2040 Prop-Maker Feather reading your head gestures, and two animations that answer with fire.
diy projects
This ATmega328P Clock Keeps Swatch’s Failed Internet Time Alive
Swatch's 1998 .beat time died fast, but one maker rebuilt it around an ATmega328P, a DS3231 and a 1990s HPDL-1414 bubble display.
diy projects
Raspberry Pi Book of Making 2027: A Weekend Build Queue
The Book of Making 2027 collects a year of magazine builds: origami paper circuits, a PVC-pipe underwater rover, and a first-PCB walkthrough to try.
diy projects
Louder ESP32: A $50 Multi-Room Audio Amp That Rivals Sonos
A $24 ESP32-S3 board with an onboard Class-D amp, a USB-PD trigger set to 20V, and Music Assistant add up to a networked stereo…
diy projects
Ben Eater Builds a Breadboard Clock Timed by 60 Hz Wall Power
Ben Eater skips the crystal oscillator and pulls his breadboard clock's one-second heartbeat straight from the 60 Hz AC grid. Here's how the circuit…
diy projects
Build a Wi-Fi NeoPixel Art Display with the Raspberry Pi Pico 2W
The Blossom hides a Raspberry Pi Pico 2W and a 16-pixel RGBW NeoPixel ring in a capiz shell, controlled from any browser on your…
diy projects
A Raspberry Pi Zero Cyberdeck That Fits Inside an Altoids Tin
A maker packed a Raspberry Pi Zero, a 2-inch LCD, and a hand-soldered keyboard into a mint tin. Here is how the pocket cyberdeck…