Hi, I was working on a project that requires a lot of servo motors as well as current. So I bought Arduino Mega and a Mega sensor shield(http://a.co/9moZun6). Today I finished assembling everything, then I tried to connect the sensor shield to an 11.1V battery through the terminal block. My servo motors all went crazy a bit(I instantly unplugged the power). And When I was about to upload my code(tested before and works), my mega cannot be detected on my windows(win10) computer. The Arduino mega itself is working(Green power led and yellow “L” are on when plugged into my windows), but it just doesn’t show up as anything(COM) – my windows doesn’t even report there is a new or unknown device. I checked the cable and my windows with an Uno, they have no problem. I figure maybe a part of Mega is fried? Any idea? Anything I can do to fix it? (Any possibility of ATmega16u2 corruption?)
Besides that, my new mega is on its way with a voltage regulator(http://a.co/2PKFzDR) that will be connected to my sensor shield for external power.
Later today I also learned from the internet that the mega sensor external power does not have a 5V regulator, which is why my mega isn’t working now.
Hopefully I don’t find out that my servos are fried as well. Thanks if anyone can help.
(The attached is my project without the mega)