Required components (BOM)
Each component links to an actual catalog page. Quantities are for one demonstration build.
| Component | Quantity | Detail |
|---|---|---|
| ESP32 DevKit V1 | 1 | View → |
| DHT22 Temperature & Humidity Sensor | 1 | View → |
| 10 kΩ Resistor | 1 | View → |
| Breadboard & Jumper Wire Kit | 1 | View → |
Buy All Components is intentionally disabled in Patch 1. The next commerce iteration will calculate live price, variant compatibility and stock before enabling it.
Build overview
- Identify ESP32 board revision and the DHT22 pin orientation before connecting power.
- Connect 3.3 V, GND and GPIO 4; add a 10 kΩ pull-up resistor between DATA and 3.3 V for a bare DHT22.
- Install the ESP32 board package, Adafruit DHT sensor library and Adafruit Unified Sensor library.
- Upload the example sketch and open Serial Monitor at 115200 baud.
- Confirm reasonable measurements. Disconnect power before modifying wiring.