This handy GPIO reference card is your pocket-friendly guide for mastering the Raspberry Pi Pico. Featuring a full-color pin-out diagram, it's printed on durable card-stock for easy parsing of power, PWM, SPI, and Serial UART connections.Designed for swift navigation, every pin use is clearly labeled for instant reference. On the reverse side, find a concise quick-start guide for loading CircuitPython onto your Pico and instructions for blinking the onboard LED.All this functionality is conveniently packed into a 3" x 4" card, making it an essential companion for any Raspberry Pi Pico project. https://elecena.pl/product/29479612/adafruit-gpio-reference-card-for-raspberry-pi-pico 2025-11-03 https://elecena.pl/product/29479612/adafruit-gpio-reference-card-for-raspberry-pi-pico 2025-12-04