A 433MHz transmitter is not just a single IC; it’s a tuned oscillator circuit. Below is a simplified breakdown of the :
433MHz Rx -> HT12D (Decoder) -> [4 LED outputs] 433mhz Rf Module Circuit Diagram
433MHz RF modules operate in the Industrial, Scientific, and Medical (ISM) radio band. They are legally allowed for low-power, short-range communication in most countries. A 433MHz transmitter is not just a single
| Module | Pins | Required external components | |---------------|--------------------|------------------------------------------| | FS1000A Tx | DATA, VCC, GND, ANT| 100nF cap, 17.3cm antenna | | XY-MK-5V Rx | VCC, DATA, GND, ANT| 10µF + 0.1µF caps, 17.3cm antenna | | Encoder (optional) | HT12E | 750kΩ resistor (oscillator) | | Decoder (optional) | HT12D | 51kΩ resistor, 4 LEDs or relay circuit | | Module | Pins | Required external components
This circuit gives you 4 independent wireless switch outputs.