I wanted to share the learning project I have been working on to program the Arduino and control a robot.
I purchased the J-Bot rover chassis (4 wheel / 4 motor DFROBOT ROB003), the (((Ping ultrasonic range finded, Standard RC servo (HS-311), Arduino Uno and the Adafruit V2 motor controller. I initially attempted this project with the Leonardo but It was to difficult for me to use the USB interface with the Leo's virtual USB port. I used the 5 AA battery holder (fitted inside the rover between the motors) and batteries to power the motors and a 6 AA batteries to power the Arduino Uno and servo.
My next step is to add remote control via integration with my onboard Raspi via WiFi and the MobaXterm remote terminal.
Hopefully this is of use to someone.