"Solved: my problem was the either the 3DR power module or the APM 2.6 input for the power module not sensing the battery voltage. I went into Config/Tuning and then Standard parameters and searched for BATT. Then i Disabled the BATT_MONITOR…"
"Mine would arm up but only so long as the micro USB cable was connected. Everything would work fine but the minute I pulled out the cable from the 2.6 then it would disarm. Thought is was maybe a voltage issue but not sure. I have the inputs…"