Hello, I’m having trouble hooking up my Arduino nano to an external power supply.
When I connect it via USB, it works fine as my LED will turn on so there is nothing wrong with the sketch. The LED is just supposed to turn on, that’s it. The problem is how I hooked up my battery to the nano as the LED will not turn on. There is power going to the nano as the little power light on the nano is on and the two 18650 batteries are fully charged. I don’t know where I went wrong connecting the battery to the nano. Help?