I was using a power monitoring smart plug to turn my dehumidifier on and off but decided to make it a bit smarter. I wanted full control of all the functions and feedback of all the states (including the FULL tank alert). After a bit of poking about with a multimeter on the display board I found th…

Awesome! I am planning a similar hack for my old ducted A/C but have put it off since winter is upon us. I’ll be able to track / set modes but not temperature / fan speed as the temp / fan speed adjustment is via a dial and I can’t see a good way of interfacing to it without affecting the standard…

What sort of dial? Rotary Switch? Potentiometer?

This is one of the coolest things I’ve seen. Can I ask you, how did you create a “blueprint” for your solution? Like, you have a control board, that goes to a micro controller of some sort that runs a driver which in its turn then provide power to the motor and heating/cooling element. Right? But…

I connected GPIOs configured as binary sensors in ESPHome to the display led drivers on the control board (CMOS shift registers) and ESPHome GPIOs configured as momentary switches to home made open collector drivers that were connected in parallel with the existing switches. All of this was on the d…

I think I understand, but just to be sure, what is “home made open collector drivers”?

[oXJya] [c8d5039e86734bcb2d8cbd9a3d72f3d0f62af9d6]

Inspiring work @tom_l ! Looks like a super neat solution you’ve done there. Out of interest what is the theme that you are using in the screenshot you posted of your custom card? - It looks really nice!

https://community.home-assistant.io/t/day-and-night/116232/29

[image] tom_l: What sort of dial? Rotary Switch? Potentiometer? I haven’t fully inspected it yet to find out. At a guess I’d say it will be a potentiometer.

I am super interested in this concept. I have just bought the Smart Ultimate Dehumidifier from Breville - Its not ESP32 smart, but is suitable for our larger room sizes! With your solution Tom, I think your ‘open collectors’ are NPN transisters - Is that correct? If so, I have a couple of questio…

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Smartifying a Dehumidifier with ESPHome

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