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This is an idea I wanted to try for a while. Basically, it uses one servo to drive the main wheel and a connected (90 degree) servo to turn that servo for steering. The concept of my "big wheel" "trike" works quite nicely. I am using a Digilant uC32 in "pure" Arduino C/C++ code mode to control the bot. Of all the ways to program a robot, this still remains one of the easiest. Special features include a pot on an analog input to control the PING))) ultrasonic rangefinder "trigger" distance. At that ...
This is a companion discussion topic for the original entry at https://community.robotshop.com/index.php/robots/show/3-wheeler-using-2-servos