Digger

Prototype # 1

This robot uses one touch sensor to turn the motor that lifts the boom.

When the motor turns the boom closest to the cab goes up wile  the bar coming off the cab opens the other boom.

Prototype # 2

This prototype uses two touch sensors that control the motor attached to the boom, one moves it up, another down.

Two motors drive it, and the motor mounted to the boom opens and closes the bucket.

Both Prototype's use a color sensor to determine wether to go forward or reverse.

Here its on a trailer attached to my RC.                                      

Close up of the bucket system.

A shark I drew with chalk.

Dave.