Hello, I like some help about this code. I´m having trouble running - It´s for building a Magnetometer. I´m new in arduino programing

You are welcome on this forum! You are working on an informatic project and what is most needed in an informatic project is information imagine: do the other users here in the forum have a clear picture of what you are trying to do?

To speed up finishing your project you should invest some time into writing additional information I'm 100% sure that this WILL speed up finishing your project.

So please go through this checklist and if you find an item you haven't posted yet post it

  • did you write which exact type of microcontroller you are using?
  • description of your programming skills and knowledge
  • description of your knowledge about electronics
  • description of the functionality you want to have written in normal works avoiding programming terms
  • do you have an oscilloscope? Yes / No
  • do you have a digital multimeter (DMM) Yes / No)
  • your age
  • did you post your complete sketch?
  • if relevant did you post a link to a datasheet of each component you are using?
  • if relevant did you post a handdrawn schematic or your wiring?
  • if you got a compiler-error. Did you post the complete compiler-output into a code-section?

If you don't post all this information because you want a "quick answer" to your detail problem It is very likely to turn out that all that happens is having mutliple waiting-times with mutliple asking back for details until the other users do have a clear picture of what you want to do.

You should post code by using code-tags

There is an automatic function for doing this in the Arduino-IDE
just three steps

  1. press Ctrl-T for autoformatting your code
  2. do a rightclick with the mouse and choose "copy for forum"
  3. paste clipboard into write-window of a posting

best regards Stefan