1 / 22

Articulating Tennis Machine Group 14

Articulating Tennis Machine Group 14. Members: Jerrod Stock David Villers. Instructor: Dr. Yenumula Reddy. Overview. Background Architecture Hardware Use Case Operation Final Comparison Afterthoughts Further Improvements. Background. Tennis Twist Machine

Download Presentation

Articulating Tennis Machine Group 14

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Articulating Tennis MachineGroup 14 Members: Jerrod Stock David Villers Instructor: Dr. Yenumula Reddy

  2. Overview • Background • Architecture • Hardware • Use Case • Operation • Final Comparison • Afterthoughts • Further Improvements

  3. Background • Tennis Twist Machine • Machine Designed for Beginning Players • Tennis Twist only can fire up to a maximum distance of 20 feet • Projects a ball every 5 seconds • Shoots straight out to approximate same location each time • Goal: Create variation in depth and horizontal location of launched balls.

  4. Architecture Diagram

  5. Electronic Hardware • Arduino Microcontroller • L298N Motor Driver • 12 – 9 V Voltage Regulator • 2 DC Gear Motors • 12 Volt Battery with Charger

  6. Electronic Hardware

  7. Arduino Uno Microcontroller • Programmed to control horizontal motor. • Generates random intervals and applies intervals to motor operations. • 4 to 8 seconds ‘On’; 2 to 3 seconds ‘Off’.

  8. Arduino Uno Microcontroller

  9. L298N Motor Driver • Takes 5 V output signal from microcontroller and amplifies it to 12 V. • 12 V signal then drives the horizontal motor.

  10. L298N Motor Driver

  11. Voltage Regulator • Drops 12 V down to 9 V • Necessary for safe input voltage to the microcontroller. Vout NTE1929 Vin R1= 330 ohm .1 µF R2= 1800 ohm 1 µF 1K NTE1929Voltage Regulator GND

  12. Voltage Regulator

  13. DC Gear Motor – Horizontal Control • Gear motor has cam hub that drives shaft. • Shaft attaches to turntable which will pan horizontally

  14. DC Gear Motor – Vertical Control • Gear motor has cam hub that raises and lowers hinged plate. • Wire cable is used in lifting instead of shaft.

  15. Common Power Source: 12 V Battery • Added to Tennis Twist wiring so launching mechanism also operates off 12 V battery.

  16. Use Case Diagram

  17. Controls • Main • Arduino • Vertical • Horizontal • Twist

  18. Input for Operation Modes • Original Tennis Twist • Main ‘On’ – Twist ‘On’ • Horizontal Variation Only • Main ‘On’ – Arduino ‘On’ – Horizontal ‘On’ – Twist ‘On’ • Vertical Variation Only • Main ‘On’ – Vertical ‘On’ – Twist ‘On’ • Horizontal & Vertical Variation • Main ‘On’ – Arduino ‘On’ – Horizontal ‘On’ – Vertical ‘On’ – Twist ‘On’

  19. Final Comparison * Arc length cannot be changed on original machine while in operation.

  20. Afterthoughts • Went a little over budget • Goal: $300 • Actual: ~$325 • Still an improvement upon cost of next-level machine (~$700) • (Original Tennis Twist) $230 + $325 = $555 • Project was much more mechanically involved than anticipated.

  21. Possible Further Improvements • Further Safety Features • External housing around unit to surround moving parts • Alternative User Input Methods • Increased Ball Capacity • Would require some physical redesign.

  22. Questions

More Related