Microcontroller Controls Relays via RF Modules (Download)

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In this design idea, you will learn how to interface two PIC microcontrollers using a wireless 433-MHz RF transmitter/receiver pair to control up to six relays and monitor two analog signals. The design will find multiple applications intended for smart-home systems. The RF modules (PT2262) used in this setup are available from Digi-Key (P/N: 1597-1223-ND).