Hi All,
I've connected an esp8266 to the opentherm gateway which functions as a serial to wifi bridge.
This works perfectly for 24 hours now.
My question is more related to powering the esp.
the esp requires max 240ma (3v3). I have a level shifter in between the esp and the opentherm gateway.
Is it possible to power the esp from the internal opentherm power supply?
The 7805 needs to be cooled for sure, but can the transformer deliver enough power for the opentherm gateway and the esp?
Regards,
Bryan