This was my first prototype robot that I built. I used the 5:1 gear ratio to make it go faster. I forgot to use front wheels so it was unsuccessful and the next prototype was started.
This was the next prototype with the wheels. The top view doesn't show the wheels really but using the small, standard wheels in the front proved to be a successful idea. The robot was able to go faster than most of the other robots.
This was the third and final prototype that was built. There was a microphone added to the robot so that when I say something or even just clap, the robot will start to go. This prototype also proved to be successful.