Moes Wi-Fi 2 Gang Dimmer Module: OpenBK7231T WebGUI and CB2S Chip Configuration

Hi,

I've got a MOES Smart 2-Gang dimmer from Amazon.

It's got a CB2S chip on it which is a BK7231N.

I've managed to flash this with OpenBK7231T and can now connect to the WebGUI, I'm struggling to get the device to work though.

I've managed to construct the following autoexec.bat:

startDriver TuyaMCU
setChannelType 1 toggle
setChannelType 2 dimmer
setChannelType 3 toggle
setChannelType 4 dimmer
tuyaMcu_setDimmerRange 0 1000
linkTuyaMCUOutputToChannel 1 1 1
linkTuyaMCUOutputToChannel 2 2 2
linkTuyaMCUOutputToChannel 7 1 3
linkTuyaMCUOutputToChannel 8 2 4

Based on the following output:

Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 1, dataType 1-DP_TYPE_BOOL and 1 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 7, dataType 1-DP_TYPE_BOOL and 1 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 2, dataType 2-DP_TYPE_VALUE and 4 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 8, dataType 2-DP_TYPE_VALUE and 4 data bytes

If I run this, the device starts beeping constantly and I can't seem to stop it.

I assume the fact that I can send and receive data from the TuyaMCU means all the soldering must be good, any ideas?

I can't see any obvious mistakes in the config. What do you mean by "beeping"? Have you tried to first only configure one toggle and one dimmer and see if it works that way?

I remember we had reports that double-dimmer devices are working correctly. Later we might also consider checking earlier build.

Beeping, as in making a high pitched beeping noise.

With a blank autoexec, I can turn the device on and access everything through the web console

When I run :

startDriver TuyaMCU

about 3 seconds later it starts to beep and never stops.

I did test the device before I flashed it, I got the same beeping until I configured working Wifi credentials. It feels like the TuyaMCU knows it's not configured properly so warns me.

I've not actually managed to test the dimming yet as the noise is really loud and annoying

Logs from enabling TuyaMCU are :

Info:MAIN:Time 84, idle 188771/s, free 78440, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 3/38
Info:MAIN:Started TuyaMCU.
Info:MAIN:Time 85, idle 191219/s, free 77616, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 2/38
Info:TuyaMCU:TUYAMCU received: 55 AA 00 00 00 01 00 00
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 0 (Hearbeat) with 8 bytes
Info:MAIN:Time 86, idle 190973/s, free 77616, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 2/38
Info:TuyaMCU:TUYAMCU received: 55 AA 00 01 00 15 6B 71 6D 30 6D 71 7A 62 35 7A 61 7A 65 77 73 62 32 2E 30 2E 32 73
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 1 (QueryProductInformation) with 28 bytes
Info:TuyaMCU:TuyaMCU_ParseQueryProductInformation: received kqm0mqzb5zazewsb2.0.2
Info:MAIN:Time 87, idle 188486/s, free 77400, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 3/38
Info:TuyaMCU:TUYAMCU received: 55 AA 00 02 00 00 01
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 2 (MCUconf) with 7 bytes
Info:TuyaMCU:TuyaMCU_ProcessIncoming: TUYA_CMD_MCU_CONF, TODO!
Info:MAIN:Time 88, idle 183147/s, free 77616, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 2/38
Info:TuyaMCU:TUYAMCU received: 55 AA 00 07 00 05 01 01 00 01 00 0E
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 7 (State) with 12 bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 1, dataType 1-DP_TYPE_BOOL and 1 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: raw data 1 byte:
Info:TuyaMCU:TUYAMCU received: 55 AA 00 07 00 08 06 02 00 04 00 00 00 00 1A
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 7 (State) with 15 bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 6, dataType 2-DP_TYPE_VALUE and 4 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: raw data 4 int: 0
Info:TuyaMCU:TUYAMCU received: 55 AA 00 07 00 08 0C 02 00 04 00 00 00 00 20
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 7 (State) with 15 bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 12, dataType 2-DP_TYPE_VALUE and 4 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: raw data 4 int: 0
Info:TuyaMCU:TUYAMCU received: 55 AA 00 07 00 05 07 01 00 01 00 14
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 7 (State) with 12 bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 7, dataType 1-DP_TYPE_BOOL and 1 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: raw data 1 byte:
Info:TuyaMCU:TUYAMCU received: 55 AA 00 07 00 08 02 02 00 04 00 00 03 9F B8
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 7 (State) with 15 bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 2, dataType 2-DP_TYPE_VALUE and 4 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: raw data 4 int: 927
Info:TuyaMCU:TUYAMCU received: 55 AA 00 07 00 08 08 02 00 04 00 00 02 F3 11
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 7 (State) with 15 bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: processing dpId 8, dataType 2-DP_TYPE_VALUE and 4 data bytes
Info:TuyaMCU:TuyaMCU_ParseStateMessage: raw data 4 int: 755
Info:MAIN:Time 89, idle 183417/s, free 77616, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 2/38
Info:TuyaMCU:TUYAMCU received: 55 AA 00 00 00 01 01 01
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 0 (Hearbeat) with 8 bytes
Info:MAIN:Time 90, idle 152379/s, free 77616, MQTT 0(5), bWifi 1, secondsWithNoPing 2, socks 2/38
Info:GEN:dhcp=0 ip=192.168.2.79 gate=192.168.2.1 mask=255.255.255.0 mac=d8:1f:12:e7:ad:72
Info:GEN:sta: 1, softap: 0, b/g/n
Info:GEN:sta:rssi=-63,ssid=ha,bssid=86:2a:a8:97:1a:fc ,channel=11,cipher_type:CCMP
Info:TuyaMCU:TUYAMCU received: 55 AA 00 03 00 00 02
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 3 (WiFiState) with 7 bytes
Info:MAIN:Time 91, idle 186577/s, free 77400, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 3/38
Info:MAIN:Time 92, idle 185540/s, free 77616, MQTT 0(5), bWifi 1, secondsWithNoPing 1, socks 2/38
Info:MQTT:mqtt_host empty, not starting mqtt
Info:MAIN:Time 93, idle 193373/s, free 77616, MQTT 0(6), bWifi 1, secondsWithNoPing 1, socks 2/38
Info:TuyaMCU:TUYAMCU received: 55 AA 00 00 00 01 01 01
Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 0 (Hearbeat) with 8 bytes

Would you be able to provide a packet dump (capture) for original software so we can determine what's the difference between OBK's implementation of TuyaMCU and the Tuya one?

Also, how does your device beep, why does it even have a buzzer? None of my TuyaMCU devices had a buzzer. Maybe you could just desolder one lead of a buzzer and it will work?

I can certainly try, I didn't create a backup of the old firmware which I guess might create a problem?

How would I connect this up? What software would be able to capture the various serial commands?

Certainly de-soldering the buzzer might be the best option, it's easy to find, a small black plastic cylinder.

I'd prefer to help you fix the software though

Backup of original firmware could help, but now the main question is - apart from the buzzer, is the TuyaMCU functional?

Another question would be, what is the role of the buzzer in that device in the first place?

Maybe it just needs some kind of extra packet to silence the buzzer.

So, despite the very annoying beep, I can confirm the device does work as expected to dim both sets of lights so it does appear to be fully functional

Good question, it's incredibly annoying. The docs talk about it buzzing if Wi-Fi is not configured, nothing else

In the logs I see :

Info:TuyaMCU:TuyaMCU_ProcessIncoming[ver=0]: processing command 0 (Heartbeat) with 8 bytes

Is it expecting some kind of response to that?

Added after 5 [minutes]:

Ok, so I've just configured MQTT and that stopped it beeping

So you had no MQTT for whole time?

Is it functional now?

It might mean that... it beeps while WiFi state is 0, and stops when it's 4:

The only problem is I am not sure what to do with that. Maybe I should send something else than 0 in case that MQTT is off...