The basic RC controller is very easy to make and requires only three components, an Arduino Uno, a Joystick Shield and an NRF24L01 radio module. The Joystick shield consists of one dual axis joystick with built in push button plus six additional push buttons labelled A to F. The main benefit of the shield is that it includes a socket for the NRF24L01 radio module which saves you a lot of wiring. All you need to do is plug the three parts together and you are ready to control a model.
As the controller is based on the Arduino Uno, you can power it in exactly the same way using the DC jack on the Uno. You should check with your supplier but 7-12V is usually recommended for the Arduino Uno. If you want to power it from less you need to connect directly to the unregulated Vcc pin but if you supply voltages over 5V you’ll damage your Arduino.
I’ve tried to make this simple controller capable of all the functions the complex controller by including multiple modes in the code. This allows you to switch from a drive mode to a mode which control accessories so that you can do more with the single joystick.
You can add additional controls to this controller if you like as there are a number of free Arduino pins accessible from the top of the shield. Adding LEDs or a display to identify what mode the controller is in would also be a useful feature that could easily be added.
The controller costs roughly â‚¬18.23
Arduino Uno: â‚¬9.71
Joystick Shield: â‚¬6.59
NRF24L01 Radio: â‚¬1.93