Tomato Slicer

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Group Members



In our group, Tony really likes tomatoes, but he’s too lazy to cut them. He’d rather give a knife, a lethal weapon, to a robot to do it for him. So we all decided to engage in this wonderful endeavor. One of our goals is to rid the world of knives by giving the responsibility of cutting to robots which can easily be tampered with to carry out an evildoer's bidding.

Setting Up the Project

The tomato slicer will use two servo motors. One will control the knife arm and the other will sit under a base and rotate the tomato. A downward motion by the knife arm will slice the tomato and each time the tomato is sliced it is rotated by the second servo and then the process is repeated again.

The software will be done on MATLAB.


  • Build the system by December 2nd
  • Write the code by December 3rd
  • Start on wiki by November 20th
  • Work out the kinks by December 7th to present

-Finish the wiki by December 8th

Equipment Required

  • Many tomatoes
  • 2 servo motors
  • 1 knife
  • Base made by Smitty
  • Duct tape
  • String

The Design Process

Our prototypical design was very similar to the final design. The plan was the same but minor adjustments had to be made in order to accommodate to reality.

Design 1

This design differed from the prototype because instead of pinning the tomato to the motor and using Saran wrap to protect the motor, a base was used to hold the tomato and to collect its juices. The knife we were able to acquire had to be duct taped on instead of attached to the mechanism.