Tuya E14 Lamp RGB+CW+WW - 9w [Belon BL2028N] (BK7231N)

kaankasim88 1725 3

Reply Cool? Ranking DIY | New topic

Notify about new articles

Helpful post? (0)

Post #1
20276589 09 Nov 2022 18:46

Cheap Aliexpress bulbs with apparently a unique board.

RX and TX is exposed on the backside and I successfully flashed with this tool, https://github.com/OpenBekenIOT/hid_download_py. No need to desolder anything.

I used this command: (first I took a backup)
Code: text Expand Select all Copy to clipboard
python uartprogram OpenBK7231N_app_QIO_1.0.0.bin --unprotect -d com10 -w --startaddr 0x0

LED IC is "BP1633"

It's marked as FL_M95_V1.

Pin settings:

Cool? Ranking DIY
About Author
kaankasim88 kaankasim88

Level 3
Offline

Joined: 08 Nov 2022

Posts: 5

Posts rating: 1

Points: 67
kaankasim88 wrote 5 posts with rating 1. Been with us since 2022 year.
ADVERTISEMENT
#2 20279934 11 Nov 2022 20:25

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Helpful post? (0)

Post #2
20279934 11 Nov 2022 20:25

Hey, can you specify which pins of FL_M95_V1 are VDD and GND? The remaining pads needed for programming are clearly visible on the photo (RX1, TX1, CSN/CEN)...

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.
ADVERTISEMENT
#3 20280352 12 Nov 2022 01:54

kaankasim88 kaankasim88

Level 3

Topic author Helpful post? (0)

Post #3
20280352 12 Nov 2022 01:54

By VDD, do you mean VCC? I used these pins successfuly, but I didn't actually need to connect these for successful programming. It still flashed.

#4 20280383 12 Nov 2022 04:30

p.kaczmarek2 p.kaczmarek2

Moderator Smart Home

Post #4

20280383 12 Nov 2022 04:30

VDD is the same as VCC.

I am not sure if 5 is really VDD. I'd guess that pads marked 0-5 are PWMs:

5	PWM5	I/O	GPIOP_26, which is connected to the P26 pin on the internal IC
6	PWM4	I/O	GPIOP_24, common GPIO, which is connected to the P24 pin on the internal IC
7	PWM0	I/O	GPIOP_6, which is connected to the P6 pin on the internal IC
10	PWM1	I/O	GPIOP_7, which is connected to the P7 pin on the internal IC
13	PWM3	I/O	GPIOP_9, common GPIO, which is connected to the P9 pin on the internal IC
14	PWM2	I/O	GPIOP_8, which is connected to the P8 pin on the internal IC

Those signals are broken out on the pads. Futhermore, one pad is GND and one (not marked?) is VDD - 3.3V.

I think flashing might have worked for you because pins have protection diodes to VDD and BK can run with a lower voltage that 3.3V (including diode drop) but you did not identify the VDD correctly. Still, good job, as it worked and obk flashed.

I am creating multiplatform open source firmware (Tasmota replacement), right now supporting BK7231T, BK7231N, XR809, BL602, W800, W600, LN882H and soon supporting RTL and W701:
https://github.com/openshwprojects/OpenBK7231T
If you like my work, support me at: https://paypal.me/openshwprojects

Helpful post? Buy me a coffee.

Create an account, log in and become active in a forum and ads will not appear. You will receive points by participating in discussions.
Join this discussion.

Install the application

Didn't find an answer? Ask Artificial Intelligence

*I agree to send the question to OpenAI, Anthropic PBC, Perplexity AI, Inc., Kagi Inc., Google LLC - owners of language models in order to prepare the best response. The companies may monitor and log information entered into the form.

*I agree to publicly display my question and answer. The question and answer will be publicly available to everyone. The process may take a few minutes. Upon completion, you will be redirected to the page with the answer.

Wait...(2min)

Reply Cool? Ranking DIY | New topic

Notify about new articles

Report a violation of the law

Home page
/
Forum
/
Smart Home
/
Smart Home IoT
/
Smart Home Devices
/
Tuya E14 Lamp RGB+CW+WW - 9w [Belon BL2028N] (BK7231N)

Tuya E14 Lamp RGB+CW+WW - 9w [Belon BL2028N] (BK7231N)

Didn't find an answer? Ask Artificial Intelligence