ESP32-C3 Deep-Sleep Current Measurement with INA219
Hardware used in this build
- ESP32-C3 dev board
The shed node MCU. Runs the AI_optimized_shed_TX.ino sketch. Seeed's own board. - INA219
Adafruit INA219 High Side DC Current Sensor Breakout. ±26 V, ±3.2 A, I2C. The one I use. - Solar panel + battery
This guide is generated from data/guides.json and data/parts.json. Don’t edit by hand — edit the data.
Comparison
| Part | Role | Interface | Verdict | Price |
|---|---|---|---|---|
| ESP32-C3 dev board | Shed node MCU | GPIO; Serial1 HC-12 (RX20/TX21); I2C SDA8/SCL9 | yes | ~$10.99 |
| The shed node MCU. Runs the AI_optimized_shed_TX.ino sketch. Seeed’s own board. | ||||
| INA219 | Solar bus voltage + power | I2C 0x40 | yes | — |
| Adafruit INA219 High Side DC Current Sensor Breakout. ±26 V, ±3.2 A, I2C. The one I use. | ||||
| Solar panel + battery | Node power source | via INA219 + divider (vlt_solar, pwr_solar) | — | — |
Verdict
Pick the part that matches your interface and accuracy needs. If you need humidity, prefer BME280 over BMP180. For long 1-Wire runs, DS18B20 is the most robust choice.
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