RFID Expansion for micro:bit is an RFID device with an updated UART interface running at the frequency of 125KHz, Programmable Buzzer, two Dedicated slots for Servo Motor Interfacing, USB power port, and a compact design that compatibles with all the variants of micro:bit, V1 and V2 both. It is developed with an expansion header to connect the RFID module with micro:bit via easy stacking.