Raspberry Pi Pico is Raspberry Pi's first microcontroller board, designed especially for physical computing It can be easily reprogrammed over USB from a Raspberry Pi or other computer using the C/C++ SDK or the official MicroPython port Raspberry Pi Pico Relay Board helps the user to control up to 4 appliances and make the smarter Pico Relay Board provides a way for the users to control the high voltage/current devices Pico Relay Board is specifically made to work with the Raspberry Pi Pico Board