Created by Chris & Kai
After several trial and errors, we finally managed to complete the Final version of
Rock Paper Scissors Bot.
Concept
A robotic pair of hands that play rock paper scissors.
Functions
Pair of hands that displays the three poses (Rock, Paper & Scissors)
2 Led bulbs that light up whenever a hand wins
Mechanism
4 x mechanical servos
2 Led Bulbs
2 Wooden hands
Rigid metal wires for push/pull action
Process
With the idea of following our prototype by using strings to control the movement of the fingers, we went ahead to attach the hooks to the back of the fingers. We attached rubber bands to give the finger a spring back force whenever the finger
is pulled.
The issue with the above is that the motors are not strong enough to counter the strong rubber bands hence, it was an inconceivable idea. After experimenting, we realized that metal wires had the rigidity to push the fingers while at the same time, retrace them to their original position. Hence we decided to stick with the metal wires.
Of course, some tinkering was needed to get the correct gestures for the hands. Now the question is whether arduino can run 4 motors at a time… We had difficulty with the code the most, we implemented three poses (Rock, Paper and Scissors) and gave it a randomizer to give it a sense of playfulness. Eventually, we managed to do it.
To finalize, we added LED indicators to show which hand won the match.
The End