Sunday, July 3, 2016

JD40 MK.II PCB

The JD40 MK.II PCB

  • From techkeys.us
  • AtMega32U4
  • DFU Bootloader (FLIP/DFUloader)
  • LED backlight (B7)
  • Status LED (E6)
  • Mini USB connector
  • MX and ALPS switch support
  • Cherry PCB stabilizer mount holes for spacebar.
Purchased directly from TechKeys for $35 with free shipping to the US.
The design and components are very similar to the Planck PCB. Uses the same pins for back light and status LED. Bottom row supports multiple layouts besides the original JD40 layout. Right shift can be swapped with FN.

Unused pins are broken out to pads.

Matrix pinout:

#define MATRIX_ROW_PINS { F0, F1, F5, B4 }
#define MATRIX_COL_PINS { F4, D7, B5, B6, C6, C7, D4, D6, D5, D0, D1, D2 }