This is an Arduino library for HD44780 LCD display, operated in 4 bit mode over I2C bus with 8-bit I/O expander PCF8574 ...

Pipeline for images onto WS2812B LED strips via Raspberry Pi Pico, ESP32, or Arduino UNO, to use as a dot-matrix display.

In the era of cheap 32-bit microcontrollers, it’s also refreshing to see hackers still dragging the ATtiny from time to time. Thanks to [Abe] for the tip.

The new hotness in consumer electronics might be RF remotes based on protocols like Bluetooth Low Energy, but there’s still plenty of life left in the classic infrared remote. Especially with ...