Keycaps for my Pico Pop'n Music controller

Keycap for my Pico Popn controller (a mini-controller for Pop'n Music game).
I tried many options for the keycaps, and made these resin printed ones which I think are good.
You have to use resin printer to get the decent resolution and accuracy.

OpenScad source file is also provided for you to fiddle with.

You may make your own Pop'n Music controller. Go check out.

https://github.com/whowechina/popn_pico/