What class are you taking , Accounting ? If you're taking Electronics you should know that you need to post your schematic and datasheets before you can get any help.(led strip, sensor). After you do that you need to Google your topic to find arduino/forum
links to tutorials. This is part of your job as a student. We're not going to research you subject. Research the subject and post what you find with your datasheets and schematic and we'll go from there. This isn't a 7-11 for Electronics Homework.