TuyaMCU RGB Controller Compatibility with OpenBeken: Pinout and Programming Guide

Hi, just confirming that this is a TuyaMCU and that I can control this RGB controller with OpenBeken? If anyone has the pin out and instructions on how to do the wiring and steps to put the chip into programming mode I'd greatly appreciate it.

AI: Could you provide the exact brand and model number of your RGB controller?
DR03W
AI: If possible, could you share a clear photo of the controller’s PCB, especially any chip markings or labels, or describe them here?
Nation N32G435 MCU and a CB3L wifi chip

Hey, I know this device. It's a Miboxer or Miboxer clone! We've did a basic support for that some time ago. There was a command called, how it was, tuyaMCU_setupLED?
https://www.elektroda.com/rtvforum/find.php?q=tuyaMCU_setupLED
Here is one of related topics:
https://www.elektroda.com/rtvforum/topic4030989.html
Here is devices list:
https://openbekeniot.github.io/webapp/devicesList.html
Here is generic TuyaMCU guide:
https://www.elektroda.com/news/news4038151.html

Btw, I didn't see yet this CB3S format. Did you see it, @divadiow ?

Well, but long story short, you need to desolder WiFi module (or put MCU in reset, or cut RX/TX) to first backup firmware and then flash OBK, and then probably... well, we'll see. How many pieces do you have? I am asking because in some rare cases we might require a TuyaMCU packet dump done with analyzer: https://www.elektroda.com/rtvforum/topic3970199.html but maybe, since your device is similar to Miboxer, we can get around without it.... who knows if Tuya already changed dpIDs or not.

That being said, that's certainly a more problematic device to flash than a classic PWM-based RGB controller. That's how you pay for that RF remote support feature. If you don't need RF, then I'd just go for classic PWM dimmers.

p.kaczmarek2 wrote:

Btw, I didn't see yet this CB3S format. Did you see it, @divadiow ?

only after Googling earlier after the user's GH post
https://developer.tuya.com/en/docs/iot/cb3l-module-datasheet?id=Kai51ngmrh3qm

https://github.com/openshwprojects/OpenBK7231T_App/issues/1719

Ah, sorry, it's CB3L, not CB3S. That caught me off-guard. I always assumed that "L" means "Lighting" and "L" modules are for LEDs.

looking through cloudcutter Github search it looks like a few devices have surfaced with CB3L

>>21608004 I have two pieces. They're sold as "BTF-LIGHTING 2.4G WiFi DR03W RGB SPI Controller Tuya APP/Smart Life/Google Home/Alexa Control Support WS2812B WS2811 WS2815 etc Addressable LED Strip Work with WR01RF RC03RFB RF Remote" on amazon. https://www.amazon.com/dp/B0DB5P7LBC

The Wifi module is just removable (it's just sitting in a four pin header).

I need to find the pin out for the 6 connectors on the right. Assuming pin 1 is on the bottom in this picture ... I can find the VCC and GND pins easily enough with a multimeter, how do I find the other pins?

Which connectors? I can see 4 pin connector, not 6. TX and RX is clearly visible:

Or are you asking which screw terminal is which LED wire? That should be marked on device case.

>>21608323 Good point, yes I was looking at the LED wires and thinking that's how I would program the controller. I'm guessing I'm wrong in that assumption? And I just tried to remove the wifi module and it seems to be stuck or just glued in somehow. Any more pressure and I'm going to break the thing.
With TX and RX, VCC and Ground are easy enough. What's the short that I can use to put it into programming mode?