This keypad fits to the rear of the M.A.R.S Rover (both micro:bit or Pi Zero versions) and provides a touch sensor input of 16 pads.

The symbols are designed for use with programming movements of the Rover and mast head, although you can use them as you like.

Both Makecode (for micro:bit) and Python library module (for Pi Zero) contain the basic keypad reading functions

micro:bit, Pi Zero and Rover are not included.