Yesterday i was tuning my ACM board via USB cable. - wire of LiPo was connected to 5v BEC, + wire was not connected. Suddenly + LiPo wire touched ground of telemetry modem... I saw some sparks, computer died.
Now, when im connecting ACM board through usb there is no power, no led blinking, nothing happens. If i connect my LiPo, board seem to work ok (though Mission Planner i can see all sensors working), exept of RC readings. All readings = 0 :( On bottom red board only power LED is on, no ppm blue led.
My atmega328 died? Ok, i can replace and reflash it. But why i havent power though USB? Any ideas?