Support for Wi-Fi Dimmer? #5737

jsponz · 2019-05-02T09:45:12Z

Is this Wi-Fi Dimmer supported?

https://www.aliexpress.com/item/Wifi-Smart-Dimmer-220V-240V-150W-Controller-Timer-Switch-light-Voice-Control-Works-With-Amazon-Alexa/32962631174.html?spm=a2g0s.9042311.0.0.27424c4dZ69TdG

I have used tuya-convert to flash Tasmota, and it works. I have it with Tasmota.

I can't find any Info about this device. I have tried Tuya Dimmer but no success (no switching, no dimming control from the Tasmota interface).

Thanks!

Jason2866 · 2019-05-02T11:01:43Z

No. Please read and this CONTRIBUTING

ascillato2 · 2019-05-02T20:16:23Z

Closing this issue as it has been answered.

Support Information (Guide)

See Wiki for more information.
See Chat for more user experience.
See Community for forum.
See Code of Conduct

dr-apple · 2019-05-08T10:35:14Z

Hello i have have the same device, i flash tasmota 6.5, but what is the pin occupancy for the serial connection and switch ? Have any a idea ?

keesschollaart81 · 2019-05-08T11:14:45Z

I also recently bought this device and I'm very intersted in Tasmota support. It's the cheapest wifi AC dimmer out there (~15$ price point), very interesting!

jsponz · 2019-05-08T11:51:20Z

@dr-apple I have tried all the possible options with no success.

I guess there is also anything related to serial communication and/or chip identification.

@keesschollaart81 I am with you. It works ok. Robust and cheap.

Any help is welcome!

dr-apple · 2019-05-08T12:01:41Z

@jsponz thank you for the info, i have testet all options for the button but zero :-(

I've been looking for hours in the network for schematics, pin assignments, but I can not find anything about the thing or the structure ....

https://docs.tuya.com/en/hardware/WiFi-module/wifi-e1s-module.html

meingraham · 2019-05-08T12:11:08Z

You guys may be stuck between a rock and a hard place.

First let me ask if you have tried different Tuya Dimmer IDs (SetOption34)?

It is likely that the dimming function is not handled by the ESP chip itself. The dimming function is probably handled by a separate MCU. The dimming actions to perform are usually communicated via codes sent from the ESP chip to the MCU via the serial communications interface. The dimming codes vary from device to device, even revision to revision.

In order for Tasmota to work if installed on the dimmer, Tasmota needs to send the right codes when an action request is made to it and also receive codes to confirm the action completed or to know what the device is up to when a change is made physically at the device (i.e., a human made the change). If you know the codes, then these can be programmed into Tasmota rules or customized into the code itself and compiled into the firmware.

But first you have to know the codes. And for that you would have had to reverse engineer the original firmware. Of course, if you provision the device on the Smart Life app in order to see it operate, Smart Life may update the firmware and thus blocking the ability to use Tuya-Convert. And thus the rock and a hard place 😬

If you backed up the original firmware, you may be able to flash it back onto your device to attempt the reverse engineering process. @digiblur went through that is some of his videos.

Regards.

Mike

keesschollaart81 · 2019-05-08T18:01:15Z

Impressive work from @digiblur 💯, super cool to see these videos.

Some pictures from inside of the device:
https://ibb.co/pPhL3cL
https://ibb.co/7Ysv6gR
https://ibb.co/3pmzzVh
https://ibb.co/s2Gg5S3
https://ibb.co/jLbc7Yg

Tuya Convert log

Original firmware binary

After flashing Tasmota is was able to configure it via the web interface and I tried some different combinations but without success. Module set to 'Tuya Dimmer (54)'. After trying some different RX/TX configuration and some random guesses for the SetOption34 I was not able to see any RX messages in the console (with web log level 4). Also no incoming data when manually switching the device.

What would be a next thing to try/work out? I don't think I'm able to solder/connect to the serial port myself (too small & no experience).

jsponz · 2019-05-09T04:42:15Z

@keesschollaart81 Thanks for your analysis. I spent some time as well. One of my devices is broken: it does not boot.

The other one is flashed with Tasmota, but nothing happens. Same result as you have.

dr-apple · 2019-05-09T16:31:51Z

if I could find out the pin assignment, then I would try to read the protocol and recreate .... I have to lie on the couch for 2 weeks, have time ;-)

keesschollaart81 · 2019-05-09T17:55:20Z

Maybe @jsponz can disassemble his broken device and expose the chip so that we can see which Tuya device it compares with / which pins we have?

digiblur · 2019-05-09T17:57:26Z

Which pins did you try for TX/RX?

jsponz · 2019-05-09T18:08:03Z

@keesschollaart81 Of course!

It is already disassembled :-)

Tomorrow I will send you pictures.

keesschollaart81 · 2019-05-09T19:07:58Z

@digiblur same as described here

I also tried to point the Tuya Tx107 and Rx108 to the GPIO1 and 3. Also swapped 107 and 108 in both configs. Every test I tried to toggle the input switch but the logging is always the same

By the way, the bulb seems to be on the lowest brightness after power on. The input switch does not turn on/off the light.

jsponz · 2019-05-10T04:35:41Z

@keesschollaart81 the same happens here with the original firmware. I have reported it and they have told me that it is a production issue. A new device is on the way with this fix. I will confirm as soon as I have it...

However, after flashing one unit with Tasmota (as it is right now without support for this device), I see that the light is always off, so I guess it is firmware related.

keesschollaart81 · 2019-05-10T06:12:16Z

After I set TuyaRx18 to GPIO16 it does not boot any more... :-/

dr-apple · 2019-05-10T06:46:12Z

You must reset the esp with 3 x ac power on / off with 2 sec sleep, after that, the esp has delete the config make a hotspot....

jsponz · 2019-05-10T06:56:54Z

@dr-apple, @keesschollaart81 the same happened here and esp did not boot up anymore.

I will try later, when taking pictures.

Jason2866 · 2019-05-11T08:32:13Z

Not all GPIOs can be used for all. See https://github.com/arendst/Sonoff-Tasmota/wiki/Expanding-Sonoffs#restrictions

keesschollaart81 · 2019-05-14T18:19:46Z

@jsponz any update?

jsponz · 2019-05-14T18:33:04Z

@keesschollaart81 Sorry, I have a personal issue. Tomorrow I will take the pictures.

jsponz · 2019-05-15T05:43:20Z

As promises, please find attached the pictures.

Jason2866 · 2019-05-15T08:12:07Z

It seems there is a sort of ESP module hooked on a PCB with a MCU.
The type of the MCU cant be identified on the photos. Next step is to identify type of MCU
and someone hast to hook up a logic analyzer and sniff commands that needs to be sended
and are received from the ESP to activate on off and dimming. If this is done and providing this detailed information someone can implement this type of dimmer in Tasmota.
Tbh i dont believe this will happen because there are already supported easy to buy dimmers available.

CJS0815 · 2019-05-17T10:46:12Z

@Jason2866
Please, can you say me what Types/Models of dimmers for in-wall? (only box without switch or push-button) is supported by tasmota?
5 Days ago I've buyed 4pc of the parts above - shit happens

sorry for my english :-(

dr-apple · 2019-05-17T10:48:35Z

The Model is : QS-WIFI-D01-TRAIC

CJS0815 · 2019-05-17T10:56:12Z

You mean TRIAC?

Not available in Europe :-(
Not on aliexpress

Do you have a dealer for me?

dr-apple · 2019-05-17T10:58:31Z

? show the first post here, it from ali and came frome china ?

CJS0815 · 2019-05-17T11:02:00Z

??? I dont understand !?!

The part from the first post was actual not supported - or did I read complete wrong?
I asked for a supported module like this from the first post, but even supported ...

blackscreener · 2020-06-03T18:58:44Z

Flashed with tasmota standard, one channel is working like a charm. DimmerRange is 0 - 1003.

LukevdPalen · 2020-06-03T20:05:47Z

@blackscreener nice, i also managed to flash the device. Can you share your configuration? What template did you use?

blackscreener · 2020-06-03T20:17:13Z

@blackscreener nice, i also managed to flash the device. Can you share your configuration? What template did you use?

Template: TuyaMCU (54)
Initial config: https://tasmota.github.io/docs/TuyaMCU/#dimmers

21:32:36 RSL: stat/tasmota_57CA8B/RESULT = {"TuyaMCU":[{"fnId":11,"dpId":1},{"fnId":21,"dpId":2},{"fnId":12,"dpId":7}]}

dpID 1 - on, off 1 ch
dpID 2 - dimmer 1 ch
dpID 7 - on, off 2 ch
dpID 8 - dimmer 2 ch

We need to add 2nd dimmer option to Tasmota.

LukevdPalen · 2020-06-06T08:26:16Z

@blackscreener Thanks for sharing. Besides channel 2 being uncontrollable in Tasmota. I also notice that the dimming state is not being stored. When switching on and off the dimming level is at a very low value. Do you also have this issue?

blackscreener · 2020-06-06T19:48:51Z

@LukevdPalen
For me dimming state is being stored. Try my config, second channel as relay is disabled.
Tuya_2_ch dimmer_config_tasmota_57CA8B_2699_8.3.1.2.zip

blackscreener · 2020-06-09T15:12:28Z

@LukevdPalen

2 channel works in esphome without problems. Thank you very much for help.

blackscreener · 2020-06-09T20:06:46Z

With this script running, is it still possible to reset the device with various combinations long presses...?

@dbrb2
No, reset mode is only for default wifi settings. If you want to change minimum brigtness value for MCU you must send TuyaSend command from Tasmota console:
#7379 (comment)

Clement87 · 2020-06-27T16:05:03Z

Hi, I have the same 2 gangs (TYWE2S one) but I'm still stuck at the flashing part.

I tried to desolder it in order to access the IO0 pin at the back without success.
I tried Tuya Converter but I got a device with a new PSK format

How did you manage to flash it ?
Thanks

strongset · 2020-06-27T18:11:07Z

Programming it is not the issue. The issue is to know how to configure it with the two dimming channels.

The GPIO_0 is accessible after you remove the metal shield.

@blackscreener, what are the complete comand list to configure the two dimming channels? I tried to restore the configuration file you shared and I lost the comunication with the module, I needed to erase and program again the flash.

Thanks

strongset · 2020-06-27T19:19:32Z

I just can configure as funcion two relay, just one dimmer.

Commands used:
TuyaMCU 21,2
TuyaMCU 11,1
TuyaMCU 12,7

I think is missing the implementation of the second dimmer on the tasmota and I'm guessing the command would be:
TuyaMCU 22,8

There is any other way?

blackscreener · 2020-06-27T20:52:04Z

@diasarmando
#8663

I gave up with tasmota. With esphome 2 channels works fine.

strongset · 2020-06-28T18:07:59Z

@blackscreener can you please share the link or configuration?
Thanks

blackscreener · 2020-06-29T16:57:34Z

@diasarmando

esphome:
  name: 2ch_dimmer
  platform: ESP8266
  board: esp01_1m

wifi:
  ssid: "xxxxxxx"
  password: "xxxxxxxx"

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "2Ch Dimmer"
    password: "xxxxxxx"

captive_portal:

# Make sure logging is not using the serial port
logger:
  baud_rate: 0

# Enable Home Assistant API
api:
  password: "xxxxxx"

ota:
  password: "xxxxxx"

sensor:
  - platform: wifi_signal
    name: "2CH Dimmer RSSI"
    update_interval: 60s

# My dimmer used the hardware serial port on the alternate pins
uart:
  rx_pin: GPIO3
  tx_pin: GPIO1
  baud_rate: 9600

# Register the Tuya MCU connection
tuya:

# Create a light using the dimmer
light:
  - platform: "tuya"
    name: "dim1"
    dimmer_datapoint: 2
    switch_datapoint: 1
    min_value: 0 
    max_value: 1003

  - platform: "tuya"
    name: "dim2"
    dimmer_datapoint: 8
    switch_datapoint: 7
    min_value: 0 
    max_value: 1003

blackscreener · 2020-07-01T17:51:21Z

Is that new MS-105B 1 ch dimmer or it's old V2 version ? I flashed it with tuya convert.

yuraivan · 2020-07-07T19:46:58Z

You can find a modified version of the script which is intend to work with SetOption20 1 in order to have Channel and Power decoupled. In other word the brightness channel and power are separated, so you are able to change brightness before powering on the device. The script is also shorter giving the possibility to add further features.
It has been working fine for about 2 months now.

Dimmer-QS-WiFi-D02-Script.txt

Credits to thxthx0 and MaWork77, this script is based on their version.

In the repo README I have also summarize some info to properly set up the device.

Hello!!!! I did everything according instruction.I have entered the script, the template and activated "Setoption68 1". In web interface I see all correct. Toggle 1 and 2 are working but my lamps not light(((((( What is the problem???

gonzaechev · 2020-07-13T17:21:48Z

Hello, I have this device without dimmer, I need to use with two channels for rollershutter with Tasmota blind option,
I tried flashing with tuya-convert but withoutc succes, Could someone help me with the GPIO mapping? thanks

jayjohns0n · 2020-11-05T18:34:31Z

@LukevdPalen how did you remove the shield?

Clement87 · 2020-11-06T19:42:42Z

@LukevdPalen how did you remove the shield?

I used a hot air iron. I also tried to drill a hole carefully at the right place. Both worked.

jayjohns0n · 2020-11-15T14:42:33Z

Thank you @Clement87 I got a hot air iron and it worked well. Did you manage to flash it? I can't get it into flash mode, I connected GPIO0 with a needle to ground but I couldn't flash it. same method worked with my Sonoff devices with ESP8266. Did someone have the same problem?

Clement87 · 2020-11-19T17:03:10Z

@jayjohns0n I flashed four of them without issue. Check your wires and set GPIO0 to the ground only a few seconds while you flash it.

TheeBeginner · 2020-12-05T19:34:09Z

Thank you @Clement87 I got a hot air iron and it worked well. Did you manage to flash it? I can't get it into flash mode, I connected GPIO0 with a needle to ground but I couldn't flash it. same method worked with my Sonoff devices with ESP8266. Did someone have the same problem?

Hi I have the same problem, i dont get if flashed, did all as per above
-removed the shield

soldered the serial connection
removed the bridge
while plugging in my usb in the computer i jump between GPIO0 and earth

Issue i don't know if it's in flashing mode ...? Neither with Tasmota or ESPeasy the flashing starts

Any suggestions ...

Clement87 · 2020-12-11T09:16:18Z

Thank you @Clement87 I got a hot air iron and it worked well. Did you manage to flash it? I can't get it into flash mode, I connected GPIO0 with a needle to ground but I couldn't flash it. same method worked with my Sonoff devices with ESP8266. Did someone have the same problem?

Hi I have the same problem, i dont get if flashed, did all as per above
-removed the shield

soldered the serial connection

removed the bridge

while plugging in my usb in the computer i jump between GPIO0 and earth

Issue i don't know if it's in flashing mode ...? Neither with Tasmota or ESPeasy the flashing starts

Any suggestions ...

Hi,

Be sure you didn't invert RX and TX (take a look at the datasheet)
Be sure the bridge is properly desoldered (use a multimeter to check)
Be sure you used a USB cable that can transfert datas (a lot of cable only charge devices)
Use an other USB to Serial adapter (not sure, but as I remember, you need one with 3.3V, not 5V. This is something to check)
For the flashing part, touch GPIO0 with ground then connect the USB cable then run the flash. When flashing is progressing you can take off GPIO0 needle.

I was using esphome python module.
That's all.

TheeBeginner · 2020-12-11T22:02:06Z

Thank you @Clement87 I got a hot air iron and it worked well. Did you manage to flash it? I can't get it into flash mode, I connected GPIO0 with a needle to ground but I couldn't flash it. same method worked with my Sonoff devices with ESP8266. Did someone have the same problem?

Hi I have the same problem, i dont get if flashed, did all as per above
-removed the shield

soldered the serial connection

removed the bridge

while plugging in my usb in the computer i jump between GPIO0 and earth

Issue i don't know if it's in flashing mode ...? Neither with Tasmota or ESPeasy the flashing starts
Any suggestions ...

Hi,

Be sure you didn't invert RX and TX (take a look at the datasheet)

Be sure the bridge is properly desoldered (use a multimeter to check)

Be sure you used a USB cable that can transfert datas (a lot of cable only charge devices)

Use an other USB to Serial adapter (not sure, but as I remember, you need one with 3.3V, not 5V. This is something to check)

For the flashing part, touch GPIO0 with ground then connect the USB cable then run the flash. When flashing is progressing you can take off GPIO0 needle.

I was using esphome python module.
That's all.

Thanks for the reply, did all at least I think i did, with RX / TX you mean RX goes on TX and TX on RX ? I also tried via Tuyaconvert and a pi but did not succeed there neither although i could get it into the flashing mode like that some times.

Thanks

mattia480 · 2021-01-18T10:59:41Z

Hi @TheeBeginner, I found myself in your situation where I could not flash the chip despite putting the GPIO0 to ground.
I found the solution on the tasmota documentation which is to ground the GPIO0 and the RST (above the word J5).

Connect everything to the USB port of the computer
Disconnect the RST from the ground
Start writing via Tasmotize or other software
Release GPIO0 from the ground
Flash completed!

These are the references to the cited page (link):
Attach the GPIO0 wire to ground during initial boot to flash. You may need to also connect MCU RST to GND during initial boot to get it into programming mode as described here. A 3-pin header bridged together works great with GPIO0, GND and the GND from the USB flasher attached. (TX pin to RX pin and RX pin to TX pin on USB flash adapter). Verify that you are using 3.3volts to flash, NOT 5V!

I hope to be of help even if with a delay.

4zoom · 2021-01-29T14:57:49Z

Hey guys

How you managed to remove the shield from the MS-105B dimmer? Or is there another possibility meanwhile to reach the GPO0

I do have a hot air iron

Thank you

Felipetomaz · 2021-01-29T16:56:24Z

Hi, I just used a heat gun to desolder the TYWE2S from the main PCB. Very easy.

…

Sent from my iPhone

On 29 Jan 2021, at 11:58, 4zoom ***@***.***> wrote: Hey guys How you managed to remove the shield from the MS-105B dimmer? Or is there another possibility meanwhile to reach the GPO0 Thank you — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

4zoom · 2021-02-03T11:10:20Z

Hey guys

I managed to open the shield with a hot air and also flash it with the newest Tasmota 9,.2

I compiled the version with the script option and add the script
https://gist.github.com/thxthx0/ce7f72ea75ab82be2704c9536ea77bf7#file-wifi-2way-dimmer-qs-wifi-d02-script-txt

And did the

Template:
{"NAME":"2Chan-Dimmer","GPIO":[255,148,255,149,38,43,0,0,255,42,37,255,255],"FLAG":0,"BASE":18}

Console:
SetOption68 1

Result on UI is great but no voltage on the outputs I also measured it but nothing. Also not wenn I use the hardware input for switching.

I have the MS-105B like displayed right above

Any idea what can be the problem ? GPIO's wrong configured in the template?

Thank you

ascillato2 closed this as completed May 2, 2019

ascillato2 added the question Type - Asking for Information label May 2, 2019

This was referenced Jul 16, 2020

%VALUEH% - hex formatting for rules + serialsend5 #8920

Closed

Serialsend6 - comma-separated decimal send as binary #8937

Merged

Repository owner locked and limited conversation to collaborators Feb 3, 2021

This issue was moved to a discussion.

Support for Wi-Fi Dimmer? #5737

Support for Wi-Fi Dimmer? #5737

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jsponz commented May 2, 2019

Jason2866 commented May 2, 2019

ascillato2 commented May 2, 2019

Support Information (Guide)

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