Flashing LYWSD03MMC temperature and humidity sensor
• 4 min read • Home Automation
home-automation home-assistant

Xiaomi LYWSD03MMC sensors are ideal for monitoring temperature and humidity levels in your home. They are affordable and dependable. To connect them to Home Assistant, I opted to flash them with a custom firmware available in the project linked below:
Project: ATC_MiThermometer
To summarize the process:
- Visit this link
- Connect the device
- Activate it
- Flash the custom firmware: ATC_v47.bin
- Begin the flashing process
- After flashing, reconnect to the device (may require some waiting time) and set a new name
For additional guidance, check out this helpful thread: Home Assistant Xiaomi Mijia LYWSD03MMC Temperature and Humidity Sensor Tutorial