Hello, I’ve noticed that my Arduino gets very hot very quickly sometimes. I have a 9V battery in the VIN pin, a 5mw laser pointer connected to the 3V3 pin, and 2 servos connected to the 5V pin. I also have it plugged into my computer via the USB port, and a led connected through a 470 ohm resistor on one of the output pins.
Is it normal for it to be hot? The hot part seems to be the one right next to the wall-wart adapter, which has 3 pins but the middle one is disconnected. (It came like that. Is that also normal?)
Thanks in advance, I don’t want to ruin my board.