When I plug in a USB to mission planner my flight controller is functioning fine, but when I disconnect and just run from the lipo the voltage goes down to 3Vdc.I have checked the power module and I am getting 5Vdc output from it.All the rails have 3Vdc. Can someone suggest what has happened. I have tried it powered with nothing connected and it is still the same.
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I've flown quite a few times with it until I checked it last night
and now have these problems.
USB power to the module is fine just lipo the volts are dropping.
Mike Boland said:
Have you checked the power module under load?
It sounds like the power module is failing when load is applied.
Have you checked the current draw on the power module?
The standard 3DR power module is only rated at 500mA, so a check of the current being drawn by the flight controller.
You haven't given much detail on the FC, it's brand , etc.