SHKB, QMK & VIA compatible HHKB Pro 2 controller

A alternative controller for the HHKB. 

Lite-version:

• 2 available USB2.0 ports, two external
  
• ATmega32U4 for keyboard firmware (TMK/QMK/VIA)
• Per port current limit on each downstream port 
• Drop in replacement for the original controller
• Open sourced with C-OHL S
  

Full-version:

• 3 available USB3 ports, two external, one internal. 
• ATmega32U4 for keyboard firmware (TMK/QMK/VIA)
• Will need modification of the HHKB Pro 2 case because of the USB-C connector, a raiser PCB can not be used due to the super speed USB (3.0). Link
  
• Recommended to connect directly to PC/computer. Some compatibility issues have been reported with some USB-hubs (this is also a USB-hub, chaining hubs can cause compatibility issues).
  
• Open sourced with C-OHL S

PCB is delivered tested and preflashed with QMK with VIA support enabled.