FMS Serial Interface

  • Accurate clock frequency (via crystal or ceramic resonator)
  • Serial transmit software timing corrected
  • No SMD parts required!

Source code for PIC12C508/675

HEX file for PIC12C508

HEX file for PIC12F675

PCB V1.0 (600dpi gif image)

NOTE: V1.0 board has crystal/resonator Ground connected to +5V

PCB V1.1 (Eagle Board Layout)


Connections from GWS GWT-4AII trainer socket to FMS interface (uses 3.5mm stereo plug)

Tip = no connect, Ring = PPM signal, Sleeve = Ground.

NOTE: Transmitter is powered up automatically when the plug is inserted!

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