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APM 2.5 power over UART0 and inputs

Posted by Marco Mueller on April 4, 2013 at 12:05am

Hi,

I know that I somehow damaged my board, but somehow it is also still alive.

Power over outputs or 3DR power module does not work anymore, but if I supply +5V to my soldered UART0 pins and to one input channel the board comes to live and everything works fine. Even the still connected 3DR power module gives good readings concerning ampere and voltage. As soon as I disconnect power from one of the 2 active supplies the board stops responding.

Any clue where to start measuring to identify the damaged parts?

Thanks

Marco

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apm25, uart, module, power

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Developer

Bill Bonney April 4, 2013 at 5:32am

Look at D1 in this schematic. It sounds like that one has blown. It's located near the power module port. http://diydrones.ning.com/forum/topics/apm2-5-5v-vcc-schematic