Hi All
I’m currently trying to create a interface for a Aqualisa (black) “Digital controller”, however I’m not sure of the best ESPHome Component to go with.
It needs a way to set the required temperature, Take a Start/Stop input and a input for High/normal flow
Climate control looks the closest for setting temperature, but is there anything more fitting for controlling water from a Bathroom Tap/Faucet, Bath or Shower?
Hmm yeah maybe a thermostat. Might be able to do something with fan mode for flow.
Valves are a new thing in Home Assistant but they’re not used in ESPHome much yet.
Good call on the Fan part of the Climate component, I wouldn’t have considered that for offering a start/stop button 
The Valve intergration looks neat too, though would probably require some work to be able to add a mixer valve to their supported options, though something very much worth looking into and seeing what can be done
How are you interfacing with this digital controller?
That’s stilll a work in progress, but in another thread we have been working on reverse engineering the protocol used to control the Aqualisa “digital processor”
So far it looks like the 6 pin connector has 2 output data lines for LED status control, and 2 analogue inputs.
Hardware wise I think a ESP8266, using a tri-state GPIO connected to a weak voltage divider would give the 0-2.5-5v signal needed for Start/Stop and boost, the temperature can be controlled with a 0-5V signal so I was thinking a digital potentiometer or a PWM signal with a RC network for smoothing.
For feedback we should be able to read the states of the LED control lines.
Ya, i saw that thread. Jusr checking, you cant always tell if someone knows what they’re getting themselves into. You dont seem to fall into that category.
No problem, thank you for checking to make sure I wasn’t digging myself into a hole. 
I generally try to split up issues into their component parts and ask for guidance on each part separately when I need help, just to try and keep the tasks/questions a bit easier to keep clear.
(In the past on other forums, listing all the steps/issues on one post, doesn’t get the most attention, or things get overlooked)
Valves have dropped!
Ooh, thank you for the heads up. I’m going to be busy for the next couple of months, as I’m building my electrical workshop in the back garden.
I have a spare Aqualisa mixer unit I can work with on the bench