Esphome Tutorial: for 4$ monitor your home temperature with esp32 and xiaomi mijia

We live in a world where everything is connected. One day, I wanted to know the temperature of my house when I’m outside to check if the heating regulator is working or not. Already having a bluetooth Xiaomi Mijia lywsd03mmc thermometer, I was looking for something cheap and tiny to do connect to the thermometer and do the job. I did some research and found a chip called ESP32. This chip has integrated bluetooth and WIFI.