2017-07-18, 21:27
Do you have the documentation? If not login to the blitzortung site and wander over to Project Area > Compendium then Project Descriptions. Pin 4 of the GPS-DEVICE connector is connected via JP2 to pin 14 RxD of the ATMega so pin 4 on the PCB needs to be fed a data stream, check that JP2 is set correctly. B-)