"Zigbee Home" DIY firmware project aim to provide similar functionality to ESPHome

FYI, ffenix113 now added ADC (Analog To Digital Sensor) + support for required soil moisture sensors:

https://github.com/ffenix113/zigbee_home/discussions/5

That should as an example allow one to make a DIY Zigbee flower and plant sensors for soil moisture with configurations can in theory be more easily customized and tweaked via the YAML configuration:

1 Like