Hidden treasures abound in the Adafruit store... and this is one. A little radio module with four pins that can be controlled from a battery powered key fob.

We will use those four pins to control the direction of each servo: forward, backward, left, and right.

Connect the pins of the radio module to the Arduino as follows.
  • GND -> GND
  • +5V --> 5v
  • D0 ----> A0
  • D1 ----> A1
  • D2 ----> A2
  • D3 ----> A3

If your robot keeps resetting or the radio doesn't seem to be working... voltage could be sagging below 5 volts - the radio module doesn't operate reliably below that threshold.

This guide was first published on Feb 17, 2014. It was last updated on Feb 17, 2014.

This page (RF Remote) was last updated on Nov 24, 2020.