1. Project: Automated Pool Chemical System 12/07/09 Oral Presentation #2 Engr. 339

2. Presentation Overview 1. Team and Problem Reintroduction 2. General System Overview 3. Feasibility 4. Current Progress 5. Challenges 6. Resources 7. Questions

3. The Team Simeon Eisen, Jeff Overweg, Jacob Vander Wall, Aaron Maley

4. The Problem Pool water maintenance is time consuming and often imprecise Improper pool care can produce unsafe swimming conditions Current chemical controllers are expensive and not suited to a residential environment

5. Project Overview Create an automated pool chemical system Monitor pH, ORP and temperature Calculate required chemical dose Dispense chemicals Network wirelessly

6. Microprocessor Sensors Dispensor PH+, PH-, Sanitization Signals Analog PH, ORP Signals, Temp Online Interface Data, Alerts Local Interface

7. Design Norms Trust Safety and reliability Transparency Clear, effective communication Stewardship Environment, resources and time

8. Feasibility Market: Approximately 9 million residential pools in North America Proof of Concept: Many competitors products on the market Current market cost Chemtrol 250

9. Project Status - Completed Preliminary testing with pH and ORP probes Draft PPFS Developed contacts with the physical plant dealing with Calvin’s Pool Maintenance Selected a MicroController Obtained a WiFi development kit Engr325 - Successfully working with a touch screen interface

10. Project Status – In Progress Finalizing mechanical dispensing system Software development Business Plan Final PPFS

11. Challenges Sensor signal instability Chemical dispenser: sophistication vs. cost Budget/Design Cost Patents

12. Key Resources Reverse engineering Advisor: Professor Vanderleest Industrial Consultant: Tim Theriault Business 396 Team Larry Van Hoe

13. Questions?