BoardPilotSW-420 vibration sensor module with ESP32
Supply 3.3-5 V
Bus GPIO
Measures vibration
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| VCC | Power | 3V3 | |
| GND | Ground | GND | |
| DO | Output (the part drives it) | D25 | Changes level when the module shakes. Sensitivity set with the trimmer |
Suggested wiring for the 30-pin ESP32 DevKit, avoiding flash, input-only and strapping pins. BoardPilot checks it for you as you wire.
Starter code (Arduino)
void setup() {
Serial.begin(115200);
pinMode(25, INPUT); // DO
}
void loop() {
Serial.println(digitalRead(25));
delay(100);
}Sources
- Texas Instruments LM393 datasheet, Comparator output driven by the vibration switch
Try it in 3D in BoardPilot
Learn the basics
Lesson: GPIO: pins in and out GPIO
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.