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Hardware Setup
lennon101 edited this page Sep 23, 2025
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1 revision
- ESP32 development board
- BME280 sensor (I²C)
- Davis tipping bucket rain gauge
- USB cable for flashing
- Breadboard and jumper wires
| ESP32 Pin | BME280 Pin |
|---|---|
| 3.3V | VCC |
| GND | GND |
| GPIO21 | SDA |
| GPIO22 | SCL |
| ESP32 Pin | Rain Gauge |
|---|---|
| GPIO16 | Signal |
| 3.3V | VCC |
| GND | GND |
⚠️ The rain gauge uses an interrupt on GPIO16.