This is the PCB board I created for my Opencockpits FMC Kit. It includes a 6-pin 2.54mm header for the LED indicators.
There’s 37 solder pads for SMDs for backlighting, along with resistor pads. It was designed for these SMD @ SuperBrightLeds.com using 12v input. This results in using 12 47ohm resistors (3 SMD per resistor) and 1 150 ohm resistor for the last SMD. There’s a 2-pin 2.54mm header for power input.
The pushbutton pads were designed for these switches from Mouser.
I ordered mine from https://easyeda.com for about $50 for a minimum 5 copies shipped ($25 for boards and $25 for shipping).
I have some SIOC code available as well that’ll work with ProSim and the OCP4NGX:
*Please note that due to the number of pins on this design file, you will need DipTrace Lite to edit it. You can obtain a free, non-profit copy of Diptrace Lite at http://diptrace.com/buy/non-profit.