Elegoo Nano - is it working?

I have just entered the world of Arduino and I am as green as they come, so be gentle with me and assume I have zero knowledge (cause that is what I have!)

I have tried to follow this video Arduino Nano Project! | Relay Control By Push-Button Using Arduino Nano! - YouTube

I have carefully rewired it time after time, but it never works.

How do I know to use the 3.0 or 3.0+ driver?

Maybe when I soldered the pin connectors I did not get them all good?

How can I verify that the nano is actually working properly?

When I connect it to my computer the POW light comes on and the L light flashes rapidly for a few seconds then changes to a slow flash.

Maybe someone could post a very simple sketch and wiring diagram to help me insure my board is working properly?

So you know what components I have at my disposal, I also have the Elegoo Mega 2560 Project set

It will not be possible for us to help you with that problem based on such a vague description. Please provide a detailed explanation of what you mean by this, including:

  • What did you do?
  • What were the results you expected from doing that?
  • What were the results you observed that did not match your expectations?
    • Make sure to include the full and exact text of any error or warning message you might have encountered.

This is normal and expected.

This is the usual behavior for a new board. It will cease to do that once you upload a sketch that does something other than blink that LED.

You can start by uploading the BareMinimum sketch:

The upload should finish successfully and the LED should no longer do the slow blink.
Now you can upload the Blink sketch:

This should cause the LED to blink again. You can change the delays in the sketch to get different blink rates and durations, upload again, and verify that the observed behavior matches what you expect from your code.