Hi!
I have a problem with output on digital pins on my arduino nano (clone). I bought my first arduino about 3 weeks ago, did some basic sketches (blinking LEDs to music, fading LEDs etc. - everything was working) and recently when connecting 7 segment display I noticed that pins 3-10 were not working.
I was connecting leds and 7-seg via 330Ohm resistors. I thought that I might have burned them and bought 2nd arduino nano, it was delivered today. I decided to blink test digital pin 2 so I connected LED via two 330Ohm resistors in series and it didn't produce any output. I was using the built-in sketch for blinking LED.
I power the board via USB, power LED is on, the L LED is blinking ~2 times a second.
What could be the source of this problems?
Thank you in advance.
You need to solder the pin headers to the nano - not just stick them in there.
Everything works fine after soldering, thank you very much 