This project provides to handwired keyboards a support to have underglow keycaps. PCBs was designed for keyboard with different form factors, for example: dactyl manuform. Its geometry makes makers hard to desing flexible PCBs, and them could be available only for some kind of dactyl manuform. These 15mmx15mm PCBs are near to size of a keyboard Switch, so there can be placed in any custom keyboard, if a switch fits, a PCB will do it so, this is suitable for customizable keyboards. Every PCB was designed with a LED neopixel, 100nF capacitor and a 1n4148 diode.