microcontrollers
CircuitPython 11.0.0-alpha.1 Adds RP2350 Sleep Alarms
CircuitPython 11.0.0-alpha.1 adds RP2350 deep-sleep alarms, wake-on-pin support, and faster USB. Here's what changed and how to flash it this weekend.
esp32 & esp8266
Off-Grid LoRa Message Board Pairs ESP32-S3 with E-Ink Display
A battery-powered desk display that receives text messages over a LoRa mesh network with no WiFi needed, plus a built-in CO2 and humidity sensor.
news & releases
Raspberry Pi Official Annual 2027: A Year of Pi Builds in One Book
A year of Raspberry Pi projects in one book: home automation, a robot arm hack, Pi 500+ upgrades, and updated OS guides. Here's your…
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…
raspberry pi
Raspberry Pi 5 and ESP32-S3 Power an Offline AI Steampunk Helmet
A Pi 5 runs a local LLM and video stream while an ESP32-S3 moves a servo eye. See how this offline wearable splits the…
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…
esp32 & esp8266
This ESP32 Reaction Wheel Cube Lands and Balances on One Edge
A five-inch cube launches itself off the table, stops mid-air, and lands balanced on one edge. The ESP32, IMU and reaction wheel inside explain…
microcontrollers
Overclocked RP2350 Pushes 1080p DVI Video With No Framebuffer
A Pico-class chip driving 1920x1080 over DVI, with 520 KB of RAM and no framebuffer. Here is the overclock, the scanline trick, and the…
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…
iot & smart home
Nordic nRF54LC10A: One Chip for BLE, Thread, Zigbee and Matter
Nordic's nRF54LC10A puts BLE, Thread, Zigbee and Matter on one low-cost chip. Here is what you need to start building with it before kits…