My 4WD Robot Smart Car Chassis with Arduino On Board

I wanted to start off using the Leonardo.  Mainly to show that I could use one of the most basic of Arduino to run my car.  I ended up having to get a library ported for the Leonardo as the standard one didn't support it. 

Chassis Without Wheels

Side View

Top View

 

The down side of using the Leonardo is the fact that the max frequency to run the PWM is low so you hear the high pitch whine on the motors. 

 

Here I switched out the Leonardo with the Mega 2560.

 

With Meg 2560 Installed