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You posted unter the Raspberry Pi category but yet have the topic tagged electron
What is it now?
how about just the pdf of the datasheet?
Not sure what you mean with that, but the protocol seems quite similar to the legacy NeoPixel protocol (aka WS2811/WS2812/APA-104/SK6812) which uses only one data line with critical timing where the duty cycle of a single bit is used to distinguish between 0 and 1
The secondary data line SDI2 is not used as clock (as known from APA102) but as a fail safe to “skip” single dead LEDs.
Also these LEDs require min. 4V logic level but RPi and Electron (you still haven’t clarified) will only give you 3.3V.