diy projects
Walnut-Shell IR Remote Built on a XIAO ESP32-C3 and Wi-Fi
A real walnut now hides a Wi-Fi infrared remote on a XIAO ESP32-C3, with four IR LEDs, a MOSFET driver and a 6-day battery.…
diy projects
DIY Brain-Computer Interface: 8-Channel EEG on an ESP32
An ESP32, an ADS1299 ADC, and a custom 4-layer PCB make an 8-channel EEG headset under $350. Here is how to scale it down…
arduino
Robodog V2.0: Arduino UNO Q Gives a DOGZILLA S2 an AI Brain
Robodog V2.0 adds an Arduino UNO Q to a DOGZILLA S2 quadruped, giving it onboard computer vision, a web control page, and an animated…
arduino
JBR-001: A Weekend Desk Robot With Vision on Arduino UNO Q
JBR-001 pairs an Arduino UNO Q with three servos, a camera, and a distance sensor to build a desk robot that recognizes objects and…
esp32 & esp8266
KryonOS Turns Your ESP32 Into a Tiny JavaScript Desktop
Tired of reflashing your ESP32 for every idea? KryonOS runs JavaScript apps on a desktop-style OS with a file manager, app store, and 3D…
diy projects
ESP32 AI Voice Assistant With Animated OLED Eyes (Whisper + GPT)
An ESP32 records your voice, asks Whisper and GPT for an answer, and talks back while an OLED shows blinking eyes. Here's how the…
diy projects
CircuitPython POV Bike Wheel: Floating Images on 6 LED Strips
Six DotStar strips, a Feather RP2040, and a magnet sensor make a bike wheel draw images in mid-air. See how the timing trick works…
diy projects
AIR PRO: Pip-Boy Air Quality Monitor on Qualia S3 + SEN66
A wooden Pip-Boy box reads CO2, PM, VOC and NOx every 2 seconds and shows one word for air quality. See how the Qualia…
diy projects
EWatch: An Open Source ESP32-S3 Smartwatch You Can Program
EWatch packs an ESP32-S3, a 1.69-inch touchscreen, and a 350 mAh battery into a hackable wrist computer. See the parts, the power tricks, and…
diy projects
Build a Square PICO-8 Handheld with a Pi Zero 2 W
A Pi Zero 2 W, a 720 x 720 square IPS screen, and a custom PCB turn PICO-8 into a real pocket console. See…
arduino
Build an 8-Bit Arduino Laptop with FreeRTOS and 8 KB of RAM
An ATmega2560 with just 8 KB of RAM runs FreeRTOS, video at 24 fps, and a UI. See the parts, the memory tricks, and…
diy projects
Animate a Halloween Skeleton with a Raspberry Pi Pico and Servos
Turn a ₱150 plastic skeleton into a spooky animatronic with a Raspberry Pi Pico, four 9g servos, and a distance sensor. Wiring and power…