So I've been building a hexacopter. Today, after 4 semi-successful flights (only small crashes) my APM2.5 suddenly can't connect to the software anymore. I've done all the normal troubleshooting (restart, trying different USB ports, disconnecting and reconnecting).
What happens is, the Mavlink connection window will count down from 30 and then say, "No Heatbeat Packets Detected". Why?
This started happening after I loaded a GPS waypoint onto the APM 2.5 board, if that makes any difference.
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