What microcontroller and module are inside the Ligency RGBW spotlights?
The board carries a Tuya CBU module built on the BK7231N Wi-Fi SoC [Elektroda, pborrelli, post #20911851]
[BK7231N] [CBU] Ligency RGBW+IC LED Spotlights GPIO Identification After Flashing
TL;DR
- Two outdoor addressable RGBW+IC LED spotlights using a CBU module with BK7231N were flashed to OpenBeken after backing up the factory firmware.
- GPIO doctor testing found no pin that lit the LEDs, but P24 responded as the button using "Set Input P-up."
- Tuya’s extracted config lists CBU, SPI MISO17, SPI MOSI16, SCL14, CS15, and key1_pin 24, with the Tuya section starting at 2023424.
- The light-control GPIO mapping remains unknown, and the board tracing plus similar forum threads still left the author stuck.
Generated by the language model.
Hi all! I just got two of these outdoor addressable LED Spotlights (RGBW+IC) that use a CBU. Disassembly was a bit destructive and cracked the case that held the circuit board, but it'll still be usable when it's done.
I was successfully able to backup the factory firmware (attached) and install OpenBeken using BK Flasher, but haven't been able to make much progress since then. I can't seem to figure out how the GIPOs control the lights. I used the GPIO doctor on all the pins, but none will cause the lights to light up in any way (they did work before I flashed OpenBeken). I've only been able to identify that P24 is the button by using the "Set Input P-up," and pressing the button to see the change. Other than that, I am hitting a wall.
I did find out from the backup that BK Flasher identified the use of SPI, MOSI, and MISO. You'll have to forgive me, as that is getting beyond my level of knowledge and it's a bit of a foreign language. I did my best to trace out the pins on the board and what components they are connected to. Here's what I found:
I've spent the past three days reading and learning; these threads seem similar to my device:
[BK7231N/CBU] Casa Life ALDI Aus - Floor Lamp Mood Lamp - RGB control, SPI? MOSI? MISO?
Deciphering Pin Configuration & JSON Readout for Marlrin RGBCW Corner Floor Lamp (MOSI/MISO)
[BK7231N - CBU] Teardown of Aldi (Australia) CasaLux Smart Led Corner Lamp
If there's any recommendations or literature that informs how to make this work, please let me know. I've been searching, but haven't found the solution yet.
I was successfully able to backup the factory firmware (attached) and install OpenBeken using BK Flasher, but haven't been able to make much progress since then. I can't seem to figure out how the GIPOs control the lights. I used the GPIO doctor on all the pins, but none will cause the lights to light up in any way (they did work before I flashed OpenBeken). I've only been able to identify that P24 is the button by using the "Set Input P-up," and pressing the button to see the change. Other than that, I am hitting a wall.
Text Description
Device configuration, as extracted from Tuya:
- Microphone (TODO) on P23
- SPI MISO17
- SPI MOSI16
Device seems to be using CBU module, which is using BK7231N.
And the Tuya section starts, as usual, at 2023424
JSON Format:
{
"Jsonver":"1.0.0",
"brightmin":"10",
"gmwb":"75",
"title20":"1",
"gmwg":"70",
"knum":"1",
"wfcfg":"spcl_auto",
"colormin":"10",
"pmemory":"1",
"gmkb":"60",
"k1sfunc":"5",
"cmod":"4",
"lednum":"12",
"netlptime":"3",
"micpin":"23",
"rstbr":"50",
"musicfunc":"1",
"colormax":"100",
"module":"CBU",
"cwmaxp":"100",
"rstmode":"1",
"k1lfunc":"1",
"dmod":"7",
"brightmax":"100",
"speedstep":"20",
"wfct":"3",
"expowctrl_pin":"8",
"defbright":"100",
"rstnum":"3",
"rstcor":"r",
"key1_pin":"24",
"sensimax":"300",
"miso":"17",
"mosi":"16",
"keyfunc":"1",
"irfunc":"0",
"expowctrl_lv":"1",
"adclimit":"2400",
"sensimin":"30",
"MISO":"17",
"wt":"20",
"key1_lv":"0",
"brightstep":"20",
"remdmode":"0",
"colorpfun":"0",
"CS":"15",
"gmwr":"100",
"gmkg":"60",
"onoffmode":"1",
"colororder":"0",
"brightrate":"20",
"lptime":"3",
"aging":"0",
"category":"1101",
"SCL":"14",
"gmkr":"80",
"defcolor":"r",
"crc":"107",
"}cPhAgw_di{abi":"0",
"id":"null",
"swv":"1.0.20",
"bv":"40.00",
"pv":"2.2",
"lpv":"3.4",
"pk":"keyfwt38nejumpuv",
"firmk":"keyfwt38nejumpuv",
"cadv":"1.0.5",
"cdv":"1.0.0",
"dev_swv":"1.0.20",
"s_id":"null",
"dtp":"0",
"sync":"0",
"attr_num":"1",
"mst_tp_0":"9",
"mst_ver_0":"1.0.20",
"mst_tp_1":"0",
"mst_ver_1":"null",
"mst_tp_2":"0",
"mst_ver_2":"null",
"mst_tp_3":"0",
"mst_ver_3":"null } )Agw_wsm{nc_tp",
"ssid":"null",
"passwd":"null",
"md":"0",
"random":"0",
"wfb64":"1",
"stat":"0",
"token":"null",
"region":"null",
"reg_key":"null",
"dns_prio":"0 }{uuid",
"psk_key":"MnXfZutokIqrbtJmhnyMq6P1A0fcXxvuXcRmO",
"auth_key":"tAOi6vMDmHSZ7VN7CvmGSE3IFbjv0AEi",
"ap_ssid":"SmartLife",
"ap_passwd":"null",
"country_code":"null",
"bt_mac":"null",
"bt_hid":"null",
"prod_test":"false",
"fac_pin":"q8es5qukiuljknuj }{nc_tp",
"lckey":"null",
"h_url":"null",
"h_ip":"null",
"hs_url":"null",
"hs_ip":"null",
"hs_psk":"null",
"hs_psk_ip":"null",
"mqs_url":"null",
"mqs_ip":"null",
"mq_url":"null",
"mq_ip":"null",
"ai_sp":"null",
"ai_sp_ip":"null",
"mq_psk":"null",
"mq_psk_ip":"null",
"lp_url":"null",
"lp_ip":"null",
"time_z":"null",
"s_time_z":"null",
"wx_app_id":"null",
"wx_uuid":"null",
"dy_tls_m":"0",
"cloud_cap":"0",
"psk21_key":"null }{nc_tp"
}
I did find out from the backup that BK Flasher identified the use of SPI, MOSI, and MISO. You'll have to forgive me, as that is getting beyond my level of knowledge and it's a bit of a foreign language. I did my best to trace out the pins on the board and what components they are connected to. Here's what I found:
I've spent the past three days reading and learning; these threads seem similar to my device:
[BK7231N/CBU] Casa Life ALDI Aus - Floor Lamp Mood Lamp - RGB control, SPI? MOSI? MISO?
Deciphering Pin Configuration & JSON Readout for Marlrin RGBCW Corner Floor Lamp (MOSI/MISO)
[BK7231N - CBU] Teardown of Aldi (Australia) CasaLux Smart Led Corner Lamp
If there's any recommendations or literature that informs how to make this work, please let me know. I've been searching, but haven't found the solution yet.
Comments
This looks like individually adressable LEDs, the DO (Data Out) marking also indicates this. Have you tried our experimental SPI driver? 1. Start driver startDriver SM16703P 2. Init Driver - replace... [Read more]
You Sir are a genius and a saint! I ran the SPI Driver commands and got light! Two of the four lit up, one blue and the other white. I then powered it down to get a picture of the chip on the LED board: ... [Read more]
WS2814A ... well, to be honest, it's the first time ever I see this chip, but it bears a significant resemblance to WS2812 LEDs. Let's check the datasheet: https://obrazki.elektroda.pl/6439973400_1705418166_thumb.jpg... [Read more]
Good to know that it's new equipment, and not just that I'm new. I cleared the assignment on P16 and did some poking and prodding and am finally getting somewhere. P8 & P15 are set to relays, and I have... [Read more]
I've been doing some testing and tuning, but not much to report. I can get all four lights to light up by playing with various settings on the number of pixels and the color assignment going to each one,... [Read more]
So it's been most of a year now, these sat for about seven months, but I finally picked them up again. I found a workaround that provides correct color and individual control of each LED; though it's... [Read more]