Here is "KCS" firmware for KinCony KC868-A series (ESP32) board.
How to download and use, online guide: https://www.kincony.com/esp32-kcsv2-firmware.html
v2.2.2 improment:
1. fixed bug can't show negative temperature with DS18B20
How to download and use, online guide: https://www.kincony.com/esp32-kcsv2-firmware.html
v2.2.2 improment:
1. fixed bug can't show negative temperature with DS18B20