Hsb133 | Receiver
HSB133 VCC → Arduino 5V; GND → GND; DATA → Pin 2.
| Pin Name | Function | Wiring Instructions | | :--- | :--- | :--- | | | Antenna Input | Connect a 17.3 cm wire (for 433MHz) or a 50-ohm SMA antenna. Do not ground this pin. | | GND | Power Ground | Connect to the negative terminal of your power supply or microcontroller GND. | | VCC | Power Supply | Connect to a clean +5V DC source. Avoid switching power supplies without filtering. | | DATA | Digital Output | Connects directly to the RX pin of a UART, a microcontroller GPIO, or a decoder IC (e.g., PT2272). | | GND | Secondary Ground | Connect to the same ground plane as Pin 2 for RF stability. | hsb133 receiver
// The HSB133 output is normally high (idle) and goes low (active) when a signal is received. if (state == LOW && lastState == HIGH) // Debounce (avoid multiple triggers from the same signal) if (millis() - lastTrigger > 500) Serial.println("SIGNAL DETECTED!"); lastTrigger = millis(); HSB133 VCC → Arduino 5V; GND → GND; DATA → Pin 2