The transmitter and receiver. For the transmitter, he turned an Arduino Pro Micro into a USB sound card which he could plug into his laptop.

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.

It has an RF front end for up and down-link , ... ATA8520 is a transmitter-only version of the same IC that works from 1.9 to 3.6V. Crypto engine: No: ... ATA8520-EK2-E extension board is designed for ...

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.