arduino
Arduino UNO Q Controller Bundle: Knobs and Buttons for Linux
Arduino's UNO Q SBC Controller Bundle adds Modulino knob, buttons, joystick and LEDs to a 4GB Linux board. See what's inside and how to…
microcontrollers
Olimex Level Shifters Fix 3.3V to 5V Breadboard Headaches
Olimex's two new open hardware level shifters translate 1.65 V to 5.5 V on I2C, SPI and UART. Here's where they fit on your…
esp32 & esp8266
Turn Escape Room Puzzles into Home Assistant Devices with ESP32
Two open source Arduino libraries turn escape room puzzles into Home Assistant devices over MQTT. Here's the parts list and the I2C wiring to…
sensors & modules
Sipeed SLogic32U3: A 1.4 GS/s Logic Analyzer for Student Budgets
Sipeed's SLogic32U3 hits 1.4 GS/s over USB 3.2 with 32 channels and a browser app. Here is what it adds and how to learn…
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…
raspberry pi
Raspberry Pi Bootloader Now Draws Splash Screens on SPI Panels
Cyberdecks and Pi handhelds boot to a black screen for seconds. A new firmware extension paints your SPI or I2C panel straight from the…
arduino
Never Buy the Same L298N Twice: An Arduino UNO Q Parts Tracker
A maker got tired of owning eight identical motor drivers, so he built an Arduino UNO Q inventory tracker that answers one question: do…
diy projects
Build a Digital Nose: an SGP30 Sensor That Sniffs Out Spoiled Milk
Your nose gives a yes-or-no answer. An SGP30 gas sensor gives you a number you can plot, and the whole freshness checker is a…
diy projects
Three Corroded WiiMotes, One Working Controller and an ESP32-S3
Three bug-infested, battery-acid-ruined WiiMotes went into the teardown. One working controller came out. Here is the cleanup chemistry and the I2C bus behind it.
news & releases
Adafruit GP8403 I2C DAC Pushes Analog Output All the Way to 10V
Most DACs cap out at 5V. The GP8403 breakout boosts to a real 0-10V analog output over I2C, which unblocks fan drivers, bias rails…
diy projects
This Giant 16×2 Character Display Runs on an RP2040 and 1,000 LEDs
A maker rebuilt the classic 16×2 character LCD at 7x scale using 1,000+ addressable LEDs and an RP2040 that still speaks I2C to any…
diy projects
A Raspberry Pi Zero Clock That Sets Itself and Never Drifts
A Raspberry Pi Zero and a red 7-segment display make a desk clock that syncs over NTP and never needs setting. Here's how the…