NRF24L01+ Transmitter/Receiver

About

The NRF24L01 is an awesome little radio transceiver IC from Nordic. It operates at 2.4Ghz, has a range of about 100 meters (at least with the modules/antennas used in this demo) and can be controlled using the SPI protocol.

For this demo, I’ve set up two STM32 Nucleo boards to control a pair of NRF24L01 modules. The first STM32 sets its NRF as a transmitter and takes input from two joysticks. It then packages up the joystick data and sends it over the air to the other NRF/STM32 pair. The receiver STM32 then logs the joystick axes to the console.

Components

• 2x STM32 Nucleo L432KC
• 2x NRF24L01+ Modules
• 2x joysticks