Arduino Lernbaustein I

<html>Photo by <a href=„https://unsplash.com/@dansku?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText“>Daniel Andrade</a> on <a href=„https://unsplash.com/s/photos/arduino?utm_source=unsplash&amp;utm_medium=referral&amp;utm_content=creditCopyText“>Unsplash</a></html>