An Arduino Pro Mini talks to a NRF24L01 which handles the wireless communication. At that point, it’s up to you – throw in as few or as many controls as you like.

[Ralph] wasn’t satisfied with the required 5 control pins to drive his nrf24l01+ transceiver module, so he used this circuit needing just 3 pin using an ATtiny85. One of the key components wa… ...

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 ...