Got a programmable keyboard with 25 keys (5x5 layout) and RGB lighting. https://de.aliexpress.com/item/1005001523579896.html?spm=a2g0o.order_list.0.0.3fdc5c5fYlGH47&gatewayAdapt=glo2deu

References

• https://github.com/xordone/my_keyboards/tree/master/winry/winry25tc (old link (dead))
• https://github.com/n00b42/winry25tc
• https://docs.qmk.fm/#/keycodes_basic
• https://docs.qmk.fm/#/newbs_flashing?id=flash-your-keyboard-from-the-command-line
• https://github.com/qmk/qmk_firmware/blob/master/docs/feature_rgblight.md
• https://config.qmk.fm/#/winry/winry25tc/LAYOUT
• https://www.reddit.com/r/olkb/comments/8bzipp/qmk_help_rgb_layers_and_additional_questions/
• https://drive.google.com/file/d/1eUE0M8cn2ncafuZHglho2dna2Rbtsu4b/view?spm=a2g0s.imconversation.0.0.3d073e5fehDokA
• https://noroadsleft.github.io/kbf_qmk_converter/
• https://drop.com/talk/93641/how-to-configure-stack-overflow-the-key-macropad