These days, 433-MHz RF transmitter/receiver modules are very popular with electronics hobbyists and tinkerers. These cheap short-range radio modules can be used with almost all microcontrollers for a ...

In this design idea, you will learn how to interface two PIC microcontrollers using a wireless 433-MHz RF ... relays. Listings 1 and 2 below show the code for the transmitter and receiver ...

In essence, you connect a common 433 MHz receiver module to an ESP32 or ESP8266 microcontroller ... have it toggle a relay hooked up to a loud siren. Even if you aren’t looking to make your ...

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 ... The RF modules (PT2262) used ...