faronov

Currently this available for Eve, not sure about other apps I think we must allow a user to specify any UUID for custom characteristic and add details

check this https://github.com/RavenSystem/esp-homekit-devices/blob/master/devices/common/custom_characteristics.h#L27 it has a bunch of custom characteristics

this also a good example https://github.com/rxseger/homebridge-bme280/blob/master/lib/CustomCharacteristic.js#L12 Apple did not support pressure for sensor but eve support it if you wish to add this information to show in eve app you...

this is also a good example https://github.com/simont77/homebridge-weather-station-eve it will not only show all weather details, but it will show graphic history like that https://i.imgur.com/8opO7hel.png