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…
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.
arduino
Arduino UNO Q Smart Doorbell Runs Its Vision Model On-Device
Banzi and Richetta live-build a doorbell whose face recognition never leaves the board. Here is the UNO Q hardware behind it and what you…
raspberry pi
Build a Private Second Brain on Raspberry Pi With Logseq
Keep your notes, references and thesis research on hardware you own: Logseq plus Syncthing turns a Raspberry Pi into a private knowledge base.
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…
iot & smart home
Tiny Contacts Fits Four Relays Onto a 42 x 38 mm ESP32 Board
Four Omron surface-mount relays on a 42 x 38 mm board, driven by a ULN2003A so your ESP32 GPIO pins never touch a relay…
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…