Good morning @miawan1 not certain where you looked, but it is very inaccurate. There are numerous way to code the Codrone. Arduino Python Blockly Snap A great place to start is the Codrone website. On the Codrone (Lite or Pro) product there is a link to “Learn Codrone” and it will take you to their workbench: Https://edu.workbencheducation.com/partners/robolink There are numerous sites that give examples looking through google, and there are many in this forum.