What look like pads on the back are actully just thermal, all are connected to GND
Pinout of Light - ESP32 interface
The Chinese is just the wire colours, not very helpful
Here are the modes and voltages to GND
0% Cool Warm
Yellow 0.0 0.1 0.2
White 12.3 22.7 20.8
Blue 12.7 22.8 12.3
Brown 0.0 0.1 0.0
Black 12.3 12.3 12.3
Red 8.7 7.7 21.7
Probe Points:
+ & TP7 -> 3V3
- & TP8-> GND
TX -> TX(ESP32)
RX -> RX(ESP32)
(pad next to Q3 and C37) -> IO0
