Unkown tuya chip

Miguel_Alvarez · November 9, 2020, 3:38pm

I see both modules are physically compatibles, so if you have a TYWE2S with Tasmota the template must work. But is TYWE2S cheaper and easy to buy than ESP?

TheRoth · November 16, 2020, 11:54pm

Another device from ali with BK7231U… EnwYe Smart GU10

https://fr.aliexpress.com/item/4000300642135.html

Modele ZZ-S15181

dariusz · December 22, 2020, 6:10am

Is that any newer knowledge about the ‘new tuya’ chips?
Can be they flashed with ‘tasmota’? Without replacing them with ESP?

nickrout · December 24, 2020, 3:37am

No, there is currently no alternative firmware, open source or otherwise.

scintik · January 1, 2021, 3:57pm

Hello,
I have recently buy two MS-104B (MoesHouse) from chinese BG store.
Opened to change WB2S with BK7231 chip with ESP12 I have see this is connected to main board with 8 pin. Looking schema of jump board I see also the pin used are different.
From one side I have on main board +3.3V | GND | PWM 0 | PWM 2 |
Other side starting side of +3.3 I have RX | PWM 1 | PWM 5 | PWM 4 |
With a tester I have see:
the Relay 1 is commanded thrue PWM 0 (also I have a brief low level on PWM 5)
the Relay 2 is commanded thrue PWM 2 (also here a brief low level on PWM 4).

In next days I will try substitution, but my question is anyone have found what doing other pin except power supply and 2 command of relay?

And as reported in document reported by @Miguel_Alvarez on his post #72 there are module +RF: any info about this?

Miguel_Alvarez · January 1, 2021, 9:18pm

Hi Giovanni
I’ve also changed WB2S with ESP12 in this double relay model. I forgot to publish the document. Here it is:

I want to thank @whacky_wheel who sent me one of his modules after I burned mine

gerasalus · January 4, 2021, 6:48am

Has anyone replaced WB2S on sockets like this with power metering? As I understand it’s just a matter of correctly soldering PWM to PGIO and then mapping in tasmota for correct functionality?

Also a space seems to be quite tight, wondering if anyone managed to squeeze it in?

speebman · January 5, 2021, 10:42pm

in the same situation with the same WB2S chip
the wb2s and the TYWE2S looks similar
was wondering how to connect all the GPIO’s and get the power monitor working

speebman · January 6, 2021, 1:57pm

update: did the organ transplant
works like magic

gerasalus · January 7, 2021, 1:38pm

@speebman Did you get power monitoring working, how did you wire up?

speebman · January 7, 2021, 3:05pm

i used this guide https://medium.com/@peter.feerick/converting-a-medion-life-smart-plug-to-tasmota-dff741bfc35e

flash your esp12 with tasmota
unsolder the wb2s (the same chip as the Tywe2s)

https://developer.tuya.com/en/docs/iot/device-development/module/wifibt-dual-mode-module/wb-series-module/wb2s-module-datasheet?id=K9ghecl7kc479

3.mark what pin on the board connected to what pin on the wb2s

connect the esp in the same way as the wb2s

nvvasilev · January 7, 2021, 7:27pm

Hi @speebman,

I have the exact same device with the WB2S chip.
I also turn out to have an esp 12-F, esp M3 and esp M2.
Based on the pins that have to be connected I think that both esp M2 and esp 12-F should do the job and I will try to do it with them.
What I was wondering was what is your configuration that you use in Tasmota to show the power monitoring?
Could you share it here?

nvvasilev · January 8, 2021, 10:12pm

Hello guys (@speebman, @gerasalus)

I am happy to report that I did a successful transplantation!

I have the same exact Wifi Smart Plug with the WB2S Module (BK7231T).

I followed @speebman’s instructions and everything worked out in the end.

Here are some photos:

unknowntuyachip · January 9, 2021, 3:45pm

@nvvasilev @speebman I wanted to try this approach, but am unfortunately failing at the very first step: I can’t get the damn plug open! The approach outlined here does not seem to work for me. Any hints?

speebman · January 9, 2021, 3:57pm

The only clip is under the power button
Try to stick something underneath and pull

unknowntuyachip · January 9, 2021, 4:18pm

@speebman Thanks for the reply! So: stick something between the outer and inner shell of the power plug at the side of the power button facing the prongs, then pulling the inner shell from the outer shell should just work? Just spent about 15 minutes trying, but didn’t manage to get it open .

blakadder · January 9, 2021, 10:47pm

If yours is heaviliy glued try heating the seams to loosen the glue up

gerasalus · January 11, 2021, 1:59pm

@unknowntuyachip I’ve opened by using a vice. Wrapped my socked into a towel, put in vice and applied pressure. Rotated several times, and it popped.

Jean_Slootmans · January 11, 2021, 5:15pm

@nvvasilev
Hello, I am planning the same transplantation (WB2S with BK7231 out, ESP12 in) on the same plug.
I wonder if you would share the connections between the plug and the ESP12 module?
Thanks in advance,
JP

Jean_Slootmans · January 11, 2021, 5:17pm

@blakadder
Hello, is there a chance we will be able to flash the Beken chip with Tasmota in the near future?
Thanks,
JP