[BK7231N - CBLC9] Teardown & Flashing GY GU10 RBGWW: Tuya Module, Pin Config & OpenBeken Fir

Thank you, I will just add that, starting with latest updates, the LED Map can be done via Tools tab:


Added after 3 [seconds]:

Thank you, I will just add that, starting with latest updates, the LED Map can be done via Tools tab:

Sadly with the current firmware the cloud cutter way is no longer possible. Therefore I opened one bulb to see how easy it is to flash it using serial cable. I did not try to flash it yet but got some experiences about opening the bulb and accessing the CBLC9 chip that I would like to share with you.

1. Removing the transparent cover: Easy, because it is not glued. You can just pop it off when you pry a bit between the cover and the bulb casing.

2. Removing the LED "hat" right below the transparent cover. That is rather tricky with this bulb. It is clipped into the case and also glued at one point (the white line on the back). Heating it up with an hotair gun didn't help as it did with other bulbs. The only way I managed to get it out is this: Drill a hole right in the middle of the bottom of the connectors where the wire is crimped into. I tried to drill the core out, but before I got very deep the whole connector started rotating. This prevented me from drilling through it but the rotation led to the wire becoming loose. Then I grabbed the part of the controller CBLC9 that sticks out a bit on the LED board with a pair of pliers and pulled with some force. Sadly that led to a component (probably from the antenna) broke off. I would recommend pulling it by grabbing and pulling the differently and not applying force to where the component is soldered onto.

As you can see the RX and TX pins are not that hard to reach, especially when the whole PCB is out of the casing. But even if only the LED board is off it should still be fairly reachable using some fine clamps. Maybe someone can figure out how to only remove the LED board and not having the need to remove the wires from the 220V connectors.



I hope these images and description helps one or the other of you.

regards
Stephan

Hi,
I'm a new member, I have a couple of these bulbs, how do I see the firmware version without dismantling it?

tech1977 wrote:

how do I see the firmware version without dismantling it

it would need to be paired to the Tuya app where you can find the firmware version in the device information area

>>21329360 >>21329360
MCU: 1.3.21
Can you give me a guide or procedure to flash?

1.3.21 is not on the known Cloudctter patched list and I see 1.3.21 GU10 profile for a Kanlux device https://github.com/tuya-cloudcutter/tuya-clou.../devices/kanlux-33643-s-gu10-rgbcct-bulb.json

worth giving CC a go?

otherwise you'll need to work out if you can take them apart without breaking them. I've found most GU10s a pain to get into and put back together again.

Hi guys,
i flashed OpenBeken firmware using cloudcutter and it works!!

Now i have some general questions about OpenBeken firmware:

with Athom GU10 RGBCW WLED compatible bulbs i can adjust the color saturation by adding the white LEDs, here i saw that it is not possible to activate the CCT and RGB LEDs together, maybe something can be set in the firmware?
The white LEDs are deactivated in color mode and changing the color saturation is done only with the RGB LEDs;

also i tried the DDP protocol by sending data from an ESP32 controller with WLED and it seems to work but only RGB not RGBW even if on the controller i selected DDP RGBW, i am also interested in using white because i add it to the colored effects so i have more brightness.

Thanks again and I would like to resolve these issues to do further testing, my final goal is to use the DDP protocol throughout the house and on the external walls with GU10 bulbs together with led strips with WLED controller

So you basically want to have R, G, B and C or W enabled together?

I can make it work for you, but it's not recommended in Tuya devices, some of them don't have strong enough power supplies to handle such unstandard case.

>>21330701
yes, I would like to try R, G, B and C or W enabled together, but C and W always with a single CCT control.
I'll be careful to turn on a little white just to adjust the color saturation a little
Will it work with DDP RGBW?

I'm checking the temperature and considering setting the parameter BP5758D_Current, but what are the default Tuya maximum values?
also with your firmware to configure with Home Assistant I have to do it only via MQTT right?

Sorry for all the questions but I'm excited about these changes, I will definitely support your project

tech1977 wrote:

yes, I would like to try R, G, B and C or W enabled together, but C and W always with a single CCT control.
I'll be careful to turn on a little white just to adjust the color saturation a little

is it possible to have this function?