Feit Electric "Smart Color Chasing Strip Light" w/BK7231N and SM16703 SM16704

darconeous 5325 30

#31 21542760 08 May 2025 04:33

Sarain Sarain

Level 4

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Post #31
21542760 08 May 2025 04:33

Sounds good. I do know C and have some experience with low-level embedded firmware development (although not for these specific parts).

I'll start digging into this, to first get the build environment working for me and go through drv_sm16703P.c in more detail to see what I can come up with there. That will probably either involve merging @darconeous' work (with credit of course) or implementing something similar, to support more complex LED strips like this.
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Topic summary

The discussion revolves around the Feit Electric 20-ft LED chaser strip light, which utilizes a BK7231N chip and features segments with both SM16703 and SM16704 chips. Users explore the channel configuration, noting that while the strip supports 7 channels, only 5 are currently utilized. The connector resembles USB-C but only transmits +24v, DOUT, and GND signals. Participants share experiences with firmware flashing, GPIO pin identification, and issues with SPI communication. The SM16703 driver is reported to have bugs affecting channel alignment. A recent update indicates that the SPI DMA driver bug has been fixed, improving compatibility with SM16703P and WS2812B LEDs. Users express interest in further development and support for advanced features.
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