Weird behaviour

[camsysca]

So I guess you blew past this:

How to get the best out of this forum

Welcome to the Arduino forum! A guide explaining how to get the best out of this forum is available at the link below. Please read it:

Which would lead you here:

How to make a schematic you can post.

When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

It's not really all that hard. You'll find this forum much more helpful, and a far better resource for you, if you just try to meet us halfway.

edit - Sorry, missed one:
https://forum.arduino.cc/faq

Thank you for joining us, and for reading this far!