I have a problem with the Arduino serial monitor, when I run it it's like this, please how do I fix it?

[StefanL38]

simply delete the multiple similar postings by using the edit-Button below the posting

then RE-edit one with like described in this tutorial

Make experienced users help: two ways to quickly post code as a code-section

Hi newcomer, This thread wants to show you how you can speed-up getting helpful answers with small effort. If you manage at least to post this way. You have the sympathy of the experienced users. If you are willing to invest another 20 minutes these 20 minutes extra-time will save you a minimum of 200 minutes to finish your project. always post your full sketch. As a code-section from the very first to the very last line A code-section has a small height => keeps your posting "short" but…