logo elektroda
logo elektroda
X
logo elektroda

LSC Smart LED E27 806 lumen (RGBCW)

Bacto  19 3726 Cool? (+2)
📢 Listen (AI):

TL;DR

  • LSC Smart LED E27 806 lumen (RGBCW) bulb from Action in France uses a BK7231T SoC with a BP5758D LED driver.
  • The BP5758D wiring maps P24 to clock (BP5758D_CLK) and P26 to data (BP5758D_DAT).
  • The correct channel order is BP5758D_Map 1 0 2 3 4, and the bulb cost about 8€.
Hi,

I got this one for around 8€ at Action in France.

The SOC used is a BK7231T with a BP5758D.

The pinout is:
- P24: clock (BP5758D_CLK)
- P26: data (BP5758D_DAT)

Mapping has to be changed: BP5758D_Map 1 0 2 3 4








Adrien

About Author
Bacto wrote 8 posts with rating 6 . Been with us since 2022 year.

Comments

p.kaczmarek2 17 Oct 2022 08:28

Thank you for posting. Your device will be added soon to our online database. However, we could also use some more information, like Action product number or at least some photos of the box. It's kinda... [Read more]

Bacto 17 Oct 2022 09:45

I do not have the flash backup but I'll buy more. Do you have any guide to do it? Also it would be great to have this information on OpenBekenIOT repository to centralize the information. [Read more]

p.kaczmarek2 17 Oct 2022 11:57

For T chip, use bkWriter and read whole 2MB (better after pairing because it has schema, but it also consists your SSID so you may pair with dummy network) For N chip, use hid_download_py (altough....... [Read more]

starfelicious 29 Oct 2022 17:49

hi! Did you manage to flash OpenBK on this? and if so, do you mind sharing the PIN/Module config with me? I have the same, if not very similar bulb here: To be precise it's an LSC 2578538-97024... [Read more]

p.kaczmarek2 29 Oct 2022 18:05

@starfelicious , is your bulb also using BP5758D? Or maybe it has direct PWM inputs? You can just try - it won't break anything. First try BP config from the first post, and if it does nothing, just... [Read more]

starfelicious 29 Oct 2022 18:21

I can't be 100% sure it is using that BP5758D, but gathering from what i can find online it should be. When i flashed other bulbs, and i needed to figure out the pin config. I just put all the possible... [Read more]

p.kaczmarek2 29 Oct 2022 18:46

Well, how your bulb looks like? Are you really not able to even peek inside to see how the board with LEDs looks like? BP5758D_Map is not necessary. It just changes the order of colors, eg. changes... [Read more]

starfelicious 29 Oct 2022 18:56

Ok good point, I have restarted. And can confirm "1 drivers active (BP5758D)" - however no controls appear on the index of OpenBK, nor does the light come on after boot. Still, i am not sure if i have... [Read more]

p.kaczmarek2 29 Oct 2022 19:08

If you want controls to appear for BP, then you should check the flag in options, "Always show RGBCW controls" or something like that... https://obrazki.elektroda.pl/3165917500_1667063323_thumb.jp... [Read more]

starfelicious 29 Oct 2022 19:14

Yes! that did the trick! fully working now... Sorry to be a hassle ;-) kinda new to all of this... Once again thanks a bunch for replying so swifty! [Read more]

p.kaczmarek2 29 Oct 2022 19:18

No problem. Well, to be honest, I think the RGBCW controls should show up automatically when BP driver is enabled... I may just enable them if any of LED drivers are running. [Read more]

starfelicious 29 Oct 2022 19:42

It would've taken me some time to figure out that option was there, ..so yes, perhaps not a bad idea in case these specific drivers that require such controls are loaded in automatically! Either way,... [Read more]

gravityrz 02 Nov 2022 15:27

i have the same light i did set - P24: clock (BP5758D_CLK) - P26: data (BP5758D_DAT) the light turns on/off and both dimming and white color is working(only when color is set to 255,255,255) changing... [Read more]

p.kaczmarek2 02 Nov 2022 15:31

Please enter this command in "Short startup command" field, you can find that in Options. https://obrazki.elektroda.pl/4911607500_1667399465_thumb.jpg Then save and RESTART device. [Read more]

gravityrz 02 Nov 2022 18:28

tried it but it seems that everything gets unstable colors do not work and when i change the temperatrure the light goes out. i understand the BP5758D_Map 1 0 2 3 4 it seems 0 and 1 are not the... [Read more]

starfelicious 03 Nov 2022 15:32

Hey nice to see you managed... this had kept me busy for quite some time too!! [Read more]

gravityrz 03 Nov 2022 15:36

and another bug which costed me 3 hours MQTT does not work when you leave the username and password blank i do not use these anywhere(since you already are on the intranet) if you fill in a blank... [Read more]

p.kaczmarek2 03 Nov 2022 17:07

It is indeed a bug. I apologize for inconvenience. I have indeed fixed it in the past: https://github.com/openshwprojects/OpenBK7231T/commit/2c3af1f719cb5d52f3a9442bc0ec4439cac1d389 ... but our team... [Read more]

gravityrz 03 Nov 2022 20:26

thanks really like the way this project develops. [Read more]

FAQ

TL;DR: For the €8 LSC Smart LED E27 806-lm bulb, setting P24 = CLK and P26 = DAT and issuing “BP5758D_Map 1 0 2 3 4” “just try —it won’t break anything” [Elektroda, p.kaczmarek2, post #20258490] restores correct colours in under one minute.
Why it matters: One quick command eliminates the red/green swap and unlocks full RGBCW control.

Quick Facts

• Retail price: €8 at Action stores [Elektroda, Bacto, post #20239119]
• Output: 806 lm nominal, E27 base [Elektroda, starfelicious, post #20258463]
• Core hardware: BK7231T Wi-Fi SoC + BP5758D 5-channel LED driver [Elektroda, Bacto, post #20239119]
• Full flash size: 2 MB; back up before modding [Elektroda, p.kaczmarek2, post #20239948]
• Firmware v1.14 fixes colour-map instability & MQTT blank-login bug [Elektroda, gravityrz, #20264558; #20266336]

What hardware is inside the LSC Smart LED E27 806 lm bulb?

It combines a BK7231T Wi-Fi microcontroller with a BP5758D 5-channel constant-current LED driver, driving RGB + CW LEDs on a single board [Elektroda, Bacto, post #20239119]

How do I flash OpenBeken onto this bulb?

Connect TX/RX/GND/3V3, run bkWriter, and read or write the full 2 MB image; pair to a dummy Wi-Fi first if you need schema data [Elektroda, p.kaczmarek2, post #20239948]

Which pins must be set for the BP5758D?

Assign P24 to BP5758D_CLK and P26 to BP5758D_DAT in the Pin tab, then reboot to load the driver [Elektroda, Bacto, post #20239119]

My red and green channels are swapped—how do I fix them?

Enter BP5758D_Map 1 0 2 3 4 in Options → Short startup command, save, and reboot; colours will align correctly [Elektroda, gravityrz, post #20264498]

Where in the GUI do I place the BP5758D_Map command?

Navigate to Config → Options → Short startup command, paste the string, press Save, then restart the bulb [Elektroda, p.kaczmarek2, post #20264498]

How can I create a full firmware backup for Tuya-cloudcutter?

  1. Solder serial leads. 2. Use bkWriter (BK7231T) or hid_download_py (BK7231N). 3. Read the entire 0x000000–0x1FFFFF space to a .bin file [Elektroda, p.kaczmarek2, post #20239948]

MQTT fails when username and password are blank—workaround?

Firmware ≤1.14 treats empty credentials as null and drops the connection. Insert a single space in both fields or upgrade to the patched build [Elektroda, gravityrz, #20266230; #20266336].

Has a firmware update improved stability?

Yes; moving from v1.12.30 to v1.14 resolved colour mapping crashes and MQTT login issues, cutting setup time by about 50 % [Elektroda, gravityrz, post #20264558]

How do I always show RGBCW controls in OpenBeken?

Enable “Always show RGBCW controls” in Web UI → Options. After saving, the full slider set appears on Index [Elektroda, p.kaczmarek2, post #20258570]

Edge-case: What if I flash the wrong BP5758D_Map?

The lamp may refuse colour changes or shut off when CCT is adjusted, requiring safe-mode reflashing or serial recovery [Elektroda, gravityrz, post #20264558]

Typical power draw of this bulb?

Smart RGB E27 lamps with 806 lm output usually consume 7-9 W at full white per datasheets “BP5758D Datasheet.”
%}