Day 74/100 - RFID relay control system on Raspberry Pi Pico 2 with MicroPython

Tap an authorized RFID card to toggle a 5V brushless fan ON or OFF via a relay module. Simple toggle logic — first tap turns fan on, next tap turns it off.

Stack: Raspberry Pi Pico 2 + MFRC522 + 1 Channel Active Low Relay + MicroPython

Code: https://github.com/kritishmohapatra/100_Days_100_IoT_Projects

https://preview.redd.it/80xrby8f2nsg1.jpg?width=578&format=pjpg&auto=webp&s=b0e14c4e6143a2a44a7f94161a95374b9505ad4b