This project builds a DIY Zigbee temperature & humidity sensor based on:

• ESP32-C6 (Waveshare ESP32-C6-Zero)
• SHT3x temperature & humidity sensor
• ESP-IDF
• Future integration with ESP Zigbee SDK
• Home Assistant using ZHA

The goal is to learn Zigbee end-device development on ESP32-C6 and document everything properly.

Development phase:

• ESP-IDF environment validated
• Flash/monitor workflow working
• I2C scan working
• SHT3x detected at address 0x44
• SHT3x read path validated after fixing wiring issues
• Next step: implement Zigbee end device support

Main board:

• Waveshare ESP32-C6-Zero

Sensor:

• SHT3x module

Current wiring:

• VIN -> 3V3
• GND -> GND
• SDA -> GPIO4
• SCL -> GPIO5

esp32c6-zigbee-dht22-sensor/ README.md LICENSE .gitignore docs/ wiring.md troubleshooting.md power-design.md enclosure.md firmware/ zigbee_dht22/

Build + flash + monitor:

source ~/esp-idf/export.sh
cd ~/Git/esp32c6-zigbee-dht22-sensor/firmware/zigbee_dht22
idf.py -p /dev/ttyACM3 build flash monitor

Monitor only:

idf.py -p /dev/ttyACM3 monitor

Phase 1 – Stable Sensor

• Validate I2C communication
• Detect SHT3x on the bus
• Get stable sensor readings

Phase 2 – Zigbee Integration

• Integrate ESP Zigbee SDK
• Implement Zigbee End Device
• Add Temperature cluster
• Add Humidity cluster
• Join ZHA network

Phase 3 – Power & Enclosure

• Evaluate power options
• Optimize low power
• Design enclosure

MIT License