refer: https://myengineeringstuffs.com/2023/02/rc522-rfid-reader-module-interfacing-with-raspberry-pi-pico/
servo motors:
- https://www.youtube.com/watch?v=l_sVz-J6jBE
- https://core-electronics.com.au/guides/getting-started-with-servos-examples-with-raspberry-pi-pico/
todo:
esp8266: https://www.youtube.com/watch?v=iP90jU3_zVs https://www.instructables.com/Webserver-Using-Pi-Pico-and-ESP01/
3v3 3V3_OUT
RST -
EN 3V3_OUT
TX GP1
RX GP0
I00 -
I02 -
GND GND