nRF24L01+ Wireless Link

Send packets between two Arduinos over a 2.4 GHz GFSK radio with auto-ACK and CRC handled by the chip.

Difficulty: Breadboard. Estimated build time: about 40 minutes. Estimated parts cost: about US$10.00. 4-part bill of materials with live supplier pricing. A bidirectional point-to-point wireless link built from two Nordic nRF24L01+ modules and two Arduinos.