Originally Posted by KKUSA
Yes, If you remove the blob it may not work. Im not sure if the pin is connected to the ground plane on the other side. I think it is a single sided PCB though, so it wouldnt be connected on the bottom side anyway.
The solder blob is obviously a repair from when he trimmed the board. It looks like he disconnected the ground plane that runs to the upper portion of the board when he cut it, so he placed the blob to reconnect it.
Ok got the module working. Thx for the help kkusa. Glad I asked 1st before grinding off that solder blob, lol.
Heres a word of warning for anyone who uses the in flight auto trim switch. Once you activate the trim switch you have to immediately release the sticks back to neutral. Forgetting to release the stick is like giving the plane twice as much trim input.
Glad I tested it out on the ground 1st