BoardPilotWind vane (resistor network) with ESP32
Supply 3.3 V
Bus ANALOG
Measures wind direction
Pins and ESP32 wiring
| Pin | Role | ESP32 pin | Notes |
|---|---|---|---|
| 1 | Analog output | D34 | Add a 10 kΩ resistor from this pin to 3V3. To an ADC1 pin (GPIO 32 to 39) |
| 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); }
void loop() {
int mv = analogReadMilliVolts(34); // 1 on GPIO 34
Serial.println(mv);
delay(200);
}Sources
- SparkFun Weather Meter Kit datasheet (SEN-15901), Wind vane: 8 reed switches and resistors give 16 directions; read with a 10 kΩ pull-up
Try it in 3D in BoardPilot
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Part data: CC BY 4.0, free to reuse with credit to BoardPilot.