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klausahrenberg / WThermostatBeca

Replaces original Tuya firmware on Beca thermostat with ESP8266 wifi module
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Is TYWE3S replaceable by esp8266 in tuya ME81H? #269

Closed ikke-t closed 2 years ago

ikke-t commented 2 years ago

Hi,

I got fooled while ordering ME81H from ebay. They shipped me with no-wifi version. It looks like all components but tywe3s are on board. I was wondering if I could just solder esp8266 from some developer board that I have in place of missing tywe3s and flash this fir,ware?

Is there any change it could work? For the existing pins they lpook compatible, esp has few more.

https://tasmota.github.io/docs/devices/TYWE3S/ https://randomnerdtutorials.com/esp8266-pinout-reference-gpios/

Any experience or knowleqge?

ikke-t commented 2 years ago

Updating this for the next one:

So I received no-wifi version: no ESP

And I flashed this FW to Wemos D1 mini, and soldered off the ESP12 and soldered it to this board: with ESP

The latter image also has the relay state mod with voltage divider.

And it seems to work fine! Great. Now to study the features of this FW, thanks for all the work on it. Seems to work fine so far.

ikke-t commented 2 years ago

Just soldered another one. Works fine too. Great :D

g6094199 commented 9 months ago

Hi i also have a rev 1.4 and would like to do the relay mod. can you explain a bit more whats under the tape. is there a divider or just a single R? what size?

ikke-t commented 9 months ago

I recall it's just a resistor, not sure. I don't remember the size. There is another issue about relay state reading, I likely copied the setup from there.

https://github.com/klausahrenberg/WThermostatBeca/issues/17

ikke-t commented 9 months ago

Hei @g6094199 now that I look it better, I remember. It's divider. See how I put the oyher resistor directly to esp32 pin at the other end of wire.

g6094199 commented 9 months ago

hmm...but the devider must be pulled to gnd somewhere. maybe unter the shrink somewhere? anyway. ill put in a divider tomorrow.

ikke-t commented 9 months ago

Yes, the other resistor from the end of wire goes to groud. Look with zoom, it's under the wire.

g6094199 commented 9 months ago

ahhhhhh....now i see it! ;-)