Recently bought an Apm 2.5 board. I downloaded the driver for the board and mission planner. When using wizard It successfully uploads the firmware but will not connect to the mission planner software using Mavlink. It gives me an error saying "only one heatbeat detectd" People say it could be caused from the 3.3 volt regulator but with a quick test mine reads 3.6v compared to peoples 5 that are blown. Any help or suggestions would be great thanks.
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I have exactly the same problem with a 2.6. I can download firmware, but it will not connect via USB or via the radio link.