The NRF24L01+ Arduino wireless transceiver shield is packed with features that make it a versatile tool for various applications. The shield includes two momentary push buttons, an LED, and a slot ...

The circuitry used is simple: [Kevin] simply wired up two Arduino Unos with nRF24L01 radio modules, which communicate over SPI. Alternatively, an even quicker solution is to use a Keywish Arduino ...