We have designed ESP32 IO Expansion Board — KC868-AM (Mini) . it’s ESP32 module + many free GPIOs for home automation DIYer to use. 4 GPIOs in greent terminal already added pull up resistance, so that you can conveniently connect with 1-wire sensor device. some others input GPIOs on the PCB center for user. Support add to home assistant by ESPHome.
Related technical information
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schematic: https://www.kincony.com/download/KC868-AM-schematic.pdf
ESP32 I/O pin define: https://www.kincony.com/forum/showthread.php?tid=2693
config yaml file for ESPHome: https://www.kincony.com/forum/showthread.php?tid=2694
arduino demo source code: https://www.kincony.com/forum/forumdisplay.php?fid=45
KCS v2 firmware online guide: https://www.kincony.com/esp32-kcsv2-firmware.html
KCS v2 function explanation video tour: https://youtu.be/-DexVHAxPUM
