I’m actually still stuck on getting the board working as you have, I flashed my Esp8266 but as soon as I started it with the wires attached I only get a solid light and no response on the serial port.
I tried two chips, so I can rule out a chip failure - so I guess I connected something wrong ![:thinking: :thinking:](https://community.home-assistant.io/images/emoji/twitter/thinking.png?v=9)
I only used the connections to the board and cut the knob’s connections from the board. I haven’t soldered them to the Esp8266 since I won’t use the knob anyway.
Regarding my idea: I actually would like to have HA run a PID controller, so I can set it to something like 0 as a target and it will adjust the fan speed as necessary.
This would of course require more than just 3 steps, as setting 2 feels already too noisy and 1 is too little to keep my office “clean”, after venting some outside air through the windows.
Can you do me a favour and record the duty cycles and the frequency of the PWM to the motor on each step? ![:slight_smile: :slight_smile:](https://community.home-assistant.io/images/emoji/twitter/slight_smile.png?v=9)
And if I go ahead with the replacement I might just add a differential pressure sensor to see how much resistance the filter creates.
Not sure if this is maybe how the motor signal is used originally, as the duty cycle will request a known good RPM. And if the fan cannot reach it, it will set the filter lamp to on.
Can someone test this theory by taping the outlet up to like 90% and run the fan on high?
If the filter lamp turns on after a while we could test which frequency the chip expect the fan to do at least.
@Habbie hey, can you assist a bit here? I would like to have the energy consumption send to HA with the timestamp of the last measurement in the last_reset field, to avoid having to store the value persistent… or count in memory and have the first valid synced time after boot send out to HA as last_reset and then start doing the accounting in memory…
Is there a chance to do this in ESPHome?