Hi Folks,

I have question regarding my second APM2 board. The orange leds (I guess its serial TX and RX) led, it will flickering very fast when I turn on my TX (means TX start sending channels values), when I turn of my TX it still flickering fast. Either I connect USB or not, the behavior is the same.

If I remember correctlly the behavior in my first APM2 board (First batch of APM2) was not like this (I sold the board).

I did everything, like erase EEPROM, reset factory, even I did clear chip and upload arduino bootloader and upload arducopter 2.5.4.

I'm using Turnigy 9x radio with FrSky TX module and RX. The same TX RX was working fine on my first board.

Actually the leds are not my concern, my concer was, yesterday when I test my hexa, its a bit dificult to arm it, I need to unplug the lipo 2 time, and  then when it armed, the mottor suddenlly spins, and off after 1 sec, and spin again and off 1 sec.

It really scared me, then I manage to pull out the lipo safelly.

Any of you guys face this behavior?

I'll to put up video about the leds behavior later on.

Thanks

Yovi