Robotic platform for multiple configuration

Hi Maker ! With the desire to create a robot thanks to electronic solutions like Arduino and Raspberry pi I needed a solution to test the code . The commercial solutions do not appear to me suitable to my needs I have decided to design my own . So this platform has emerged. I share with you , if you encounter the same problem may be that it will be able to help you.

This is for easily and quickly mounting a robot with 2, 4 or 6 wheel drive or why not legs.
It measures 35 cm long and 25