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Engineering School Innovations: Connect Four Player

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  • CMU’s mechatronic Connect Four team members Matt Eicholtz, Balu Nair, Sai Yamanoor and D

  • A detailed view of the mechatronic Connect Four chip sorter.

  • A key mechanical aspect of the chip dispenser system is its use of 24V, unipolar stepper m

A team of engineering students from Carnegie Mellon University automates the popular Connect Four game.

This project was completed to fulfill the requirements for a course on Mechatronic Design at Carnegie Mellon University. The basic premise of the project was to design and build a system that can efficiently play Connect Four against an opponent. There were restrictions on size (approximately 36" W x 22" D x 36" H), and the device had to be portable, using a dedicated power supply for electronics. To prepare the machine for gameplay, the chips could either be dumped into a container in the machine or stacked on the playing surface to be picked up by the machine. 

Project Name: Connect Four Player

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Students: Matt Eicholtz, David Chang, Balu Nair, Sai Yamanoor
 
Project Details
The required performance metrics included:
The mechanism had to be capable of inserting game chips into all 7 slots in the board.
The mechanism must take no more that 20 seconds per move.
The mechanism must retract from the neutral area (12" x 8" area surrounding board) between turns.
The mechanism must display some level of game-playing intelligence (i.e., no random moves).
The mechanism must transmit its moves to the opponent via RS232 serial protocol (9600 baud rate, no parity, 8 bits per message, 2 stop bits, no flow control).
 
Equipment Used
NI LabVIEW 2010 with embedded module for ARM microcontrollers
Stellaris ARM LM3S8962 evaluation board
NXP1768-based MBED microcontroller
12V dc motor
Connect Four game set
24V, unipolar stepper motor 
Flexible spring-beam coupling
Two solenoids
Infrared sensor
Blue and pink LEDs
 
Watch the CMU Connect Four team of Matt Eicholtz, David Chang, Balu Nair and Sai Yamanoor have way too much fun with a video of their project inspired by “The Office” (below). 
 

Automation World would like to thank National Instruments for connecting us with the CMU Connect Four Team to make this "Engineering School Innovations" installment possible.

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