Arm, then immidiate disarm

my quad is acting up

it arms, and then as I apply throttle it disarms.. Sometimes goes into failsafe land mode

Data logs show a mix of

ERR subsystem 2 ecode 2 (cant find any refrence to s2 e2)

and

ERR subsystem 5 ecode 1 (failsafe radio)

I checked the flas

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Frame Structure - 3d Printed Quad

Hi all,

I 3d printed a quad. Im worried that the arms may be not ridged enough.  is there a way i can test for this.  what are the simptoms? I have datalog and tlogs of flights.

thanks

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