Is there an Arduino open source product or appplicaiton already done that allows the control of this robot kit?
Or does every buyer need to program it from scatch?
This project on GIT hub is for a very similar robot, it might be a good place to get going so you’re not starting from scratch.
The manufacturer does not seem to have sample code. The DFRobotShop Rover Mecanum uses a very similar setup, so the sample code can likely be adapted:
robotshop.com/en/dfrobotshop … basic.html
See “Useful Links” section. You might need to adapt the pinout in the code.