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…
diy projects
Flip-Dot Display Turns Fluid Physics Into Sound on a Pi Pico 2 W
A maker swapped silent LEDs for a room-filling flip-dot panel that physically clacks out real fluid physics, steered by a joystick and a hidden…
diy projects
Raspberry Pi Pico Revives a Discontinued Heathkit Packet Radio Modem
A maker resurrected a discontinued 1980s Heathkit packet radio modem by making a $4 Raspberry Pi Pico run the exact original firmware itself.
diy projects
30 ATtiny412 Chips Recreate a 1928 Bicycle-Chain Number Sieve
Maker KB Sriram rebuilt a 1928 mechanical number sieve using 30 ATtiny412 chips and an RP2040, and the century-old math still checks out perfectly.
diy projects
Three Kids Built a Raspberry Pi 3 Underwater Camera for £130
Three kids sealed a Raspberry Pi 3 and a DS18B20 sensor in a £130 acrylic tube to log river temperature and video on their…
diy projects
Raspberry Pi Zero 2 W PICO-8 Handheld With a Square 720×720 Screen
A Pi Zero 2 W, an 18650 cell and a square 720x720 screen turn PICO-8 into a pocket console. Here's how UncleStem built it…