BoardPilotRain gauge (tipping bucket) with ESP32
Supply 3.3 V
Bus GPIO
Measures rain
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| 1 | Output (the part drives it) | D25 | To a GPIO with INPUT_PULLUP. One short closure per bucket tip (0.2794 mm of rain). Debounce it |
| 2 | Ground | GND |
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); // 1
}
void loop() {
Serial.println(digitalRead(25));
delay(100);
}Sources
- SparkFun Weather Meter Kit datasheet (SEN-15901), Rain gauge: reed switch closes once per tip, 0.2794 mm (0.011 in) of rain
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.