Articulating Tennis Machine Group 14 Members: Jerrod Stock David Villers Instructor: Dr. Yenumula Reddy

Overview Problem Statement Background Architecture Technologies Innovative Aspects Challenges & Uncertainties Expected Outcome Project Plan Procurement Plan Conclusion

Problem Statement  Pre-Assembled Articulating Machines Are Expensive  On Average Between $1500-$3000  Need to provide a machine with a fraction of that cost  Current Machine Is Non-Articulating  Tennis Twist Machine projects balls to a single location  Goal – Take this machine and implement a way to randomize ball projection location

Background  Tennis Twist Machine  Machine Designed for Beginning Players  Tennis Twist only can fire up to a maximum distance of 20 feet  Only projects a ball every 5 seconds  Does not give a random location for projected tennis balls

Major Technologies/Innovation  Arduino Microcontroller  Programmed to control a 12V DC Motor.  Tells Motor  Go Forwards and Backwards  Slow Down or Speed Up  Pause

Use Case Diagram

Architecture Diagram

Challenges & Uncertainties  Designing a way to ensure DC motors are strong enough  One motor will need to be able to lift the ball machine to alter trajectory and lob height.  Creating a single common power source  The motors, microcontroller, and ball machine will need to use the same 12V battery.  The machine operates on 6 D-Cell Batteries  Housing microcontroller and motors  Must be weather proofed and not exposed to accidental physical contact by anyone or anything.

Expected Outcomes  A functional machine that randomizes ball location.  Forces player to actually run around on the court  Microcontroller is set up to where when the machine stops shooting balls, it will stop running as well.  Turns motor off when machine runs out of balls

Project Plan

Procurement Plan  Goal: Under $300  Have:  Tennis Twist Machine  Need:  Arduino Uno Microcontroller  Arduino Software (Free)  Platform Materials  Wheels, Wood or Metal depending on weight concerns  Two 12 Volt DC Motors and Materials  Gears, Chains

Conclusion  System will turn a inexpensive machine and turn it into a machine with the capabilities of a higher end machine.  Use two DC Motors to control randomization of the ball location.  Utilize a microcontroller to control the horizontal movement of the machine.  Rotate and Pause Machine

Questions