Hexacopter does not work in cold environments

Hi

I've built myself a hexacopter purchased from the martint (build your own drone) that has verygood service:)

 

I have spektrum dx8 as r/c controller

I have a strange problem, lives far north in Norway so here is Temperature around 0 degreesnowadays.

When I connect the battery to hexacopters outdoor sound engines of rapid beeps and will not start, indoors it works very well.

If I keep my finger on FDTI micro chip on the blue circuit board (APM 2560), the beeper graduallydisappeared. I have tried another blue circuit board and it's the same problem.

 Some times 2 and 3 motors works, and the other beeps.

But I will not fly if the fault Temperature-dependent and come back in the air.

Anybody have any ideas about what can be?

 

Arnt-Inge

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