?

Ups, sorry for beeing that stupid. I meassured just the voltage that was on A7 with having the pot at a random position. Of course it is changing. It goes from 0 when fully to counterclockwise up to 5.08 when fully clockwise.

The regulator gets slightly warm, but not realy hot.

When I now turn it on, the first line of the LCD shows 16 black blocks and the second line is empty. On the nano a green and a red led are lit, but I cannot see which one, because it is covered by the LCD.

I tried to upload a sketch, without having anything else connected to the nano. I think that should work?

Just to be sure, what settings do I have to use within the Arduino software?

I have the following settings:

board = Arduino Nano

processor = artmega328

programmer = AVRISPmkll

?

I am not sure about the progammer setting, but tried every single one and nothing worked.

?

Or should I try to upload when everything is connected and under power?

?