ideas for integrating esp to existing anolog thermostat

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asuz
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ideas for integrating esp to existing anolog thermostat

#1 Post by asuz » 21 Dec 2018, 11:43

Hello all, I know I am coming here with crazy questions each day :) This one is asking for if it is possible to integrate an anolog thermostat to ESP. Here is the pictures off it. I know I can make a thermostat with ESP but important thing is integrate existing one. It is cheap but very useful thermostat for general usage. There is 3 display, left side display shows set on temperature and setting keys middle display is actual temperature value right side display shows set off temperature value and setting keys. Is it possible to control and set them from ESP. I need ideas about it.
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grovkillen
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Re: ideas for integrating esp to existing anolog thermostat

#2 Post by grovkillen » 21 Dec 2018, 13:31

I don't see any communication so then it would need to be controlled using those buttons... Not a solid hack but possible.
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ThomasB
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Re: ideas for integrating esp to existing anolog thermostat

#3 Post by ThomasB » 22 Dec 2018, 04:25

There's a github published project that offers alternate software for your XH-W1401 thermostat. I don't know much about it but it appears their custom firmware includes a 9600 baud serial port for controlling the thermostat.
https://github.com/TG9541/stm8ef/wiki/S ... ne-Gadgets
https://github.com/TG9541/stm8ef/wiki/Board-W1401

- Thomas

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budman1758
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Re: ideas for integrating esp to existing anolog thermostat

#4 Post by budman1758 » 22 Dec 2018, 04:56

Maybe not the most elegant solution but you could emulate the button presses with pulses from a relay or maybe transistors connected via a store bought relay board or a homemade board piggy backed onto your thermostat board. Just need 4 gpio outputs connected to the tact switches on your board.
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asuz
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Re: ideas for integrating esp to existing anolog thermostat

#5 Post by asuz » 22 Dec 2018, 21:44

ThomasB wrote: 22 Dec 2018, 04:25 There's a github published project that offers alternate software for your XH-W1401 thermostat. I don't know much about it but it appears their custom firmware includes a 9600 baud serial port for controlling the thermostat.
https://github.com/TG9541/stm8ef/wiki/S ... ne-Gadgets
https://github.com/TG9541/stm8ef/wiki/Board-W1401

- Thomas
Thanks for that magnificent deep knowledge page for that thermostat.

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