Staryu

VID	0x1209
PID	0x2334
Owner	Kai Ryu
License	CC BY-SA 4.0 (hardware) / GPLv3 (firmware, software)
Site	https://github.com/kairyu/staryu
Source	https://github.com/kairyu/tmk_keyboard_custom/tree/master/keyboard/staryu

Open-source 5-key Keypad.