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…
esp32 & esp8266
An ESP32 and Eight ToF Sensors Give This Antique Lamp a Sixth Sense
A brass heirloom lamp gets eight ToF sensors, an ESP32, and a Raspberry Pi so it glows and sings when you walk near it.
3d printing
3D-Printed Raspberry Pi Zero 2W Case Adds a 2×16 I2C LCD
A 3D-printable case wraps the Raspberry Pi Zero 2W in a carbon-look shell and adds a 2x16 I2C LCD, so your headless Pi can…