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4. Adding RGB LED's
The RGB LED's for the per key lighting are soldered from the backside of the PCB with the PCB laying flat on a flat table surface with the LED lens facing down.
When soldering, double check that the LED end up flat and reasonably centered in the hole. Pay close attention to orientation! Alternating rows have alternating orientation, forming a continues serpentine line down the PCB.
The small triangular marking on the PCB solder side corresponds to the triangular marking on the front of the RGB lens. Place the LED with the lens facing down, aligning the triangle with the mark. v1.2x only SK6812 mini-E have a triangular cut-off on one leg/wing that corresponds to this marking.
Note that when looking at the PCB from the front once soldered, you are looking at the markings for the reversed PCB, and the markings will NOT line up.
v1.11 only The per key and under-glow RGB LED's form one continuous data line, starting with the per key lighting, and ending with the six under-glow LED's. If you prefer too, you can leave out the under-glow LED's and the per key lighting will still work, but using the under-glow LED's without per-key lighting is not possible. (Unless you do some creative bridging with a wire)
v1.2x only Bridge the jumper for RGB from the center to either per-key or under-glow to select which you want to use. Note that bridging both creates a short circuit! If using both, bridge per-key, and the secondary jumper below the text to create a single continuous line.
For all versions Please note that enabling all 70 RGB LED's means your power consumption on lighter (white) colors and high brightness will exceed what a normal USB port can supply, and will either make the keyboard become unstable/crash or make the USB ports built in overcurrent protection (resettable fuse) trigger.
Worst case, you will end up having to re-flash your keyboard and reset EEPROM to clear brightness settings. It's highly recommended to implement a max brightness or similar in the firmware/keymap when using this many RGB's.
Please note that earlier versions of the PCB 0.x-1.0x had various errors, ranging from incorrect wiring (reversed data line, 0.x) to incorrect silkscreen (1.0x). If you ordered one of these, I apologize! Double check the visible GND signal and align from that.
These six RGB LED's are soldered to the backside of each PCB. Same as above per orientation and alignment applies.