Team 11 – Poseidon

The Team Simeon Eisen Jeff Overweg Aaron Maley Jacob VanderWall

Outline The Problem Design Decisions Challenges Looking Back Looking Forward Acknowledgements Questions

The Problem Pool maintenance is time consuming and easy to neglect There are systems available, but… they are costly and often are not convenient An inexpensive, effective system would make the lives of pool owners simpler and create more time for proper leasure

Design Decisions Electronics: Processors and Communication Atmel ATmega 644p & Atmel ATmega 328 ZG2100 – b wireless interface chip Graphic LCD with touch screen overlay Electronics: Mechanical Control Stepper Motors: 5VDC, Half H-Bridge drivers with step determinant logic Solenoid Valves: 12VDC, Half H-Bridge driver Pool Recirculation Pump: 120 VAC, Relay

Design Decisions Granule Dispensing PVC Pipe 3 Stepper motor driven feed screws Solenoid valve channel switching Anti-backflow valves Sensing Aquarium grade pH and ORP sensors Diversion chamber with light turbulent flow Op Amp/Instrumentation amplifier with running average data filtration

Working Components

Dispenser Output Data

Challenges Stepper control circuit

Challenges Wi-Shield documentation Trial and error Undocumented disabled pins Rigorous Testing and research Router differences Incorporate instructions in user manual

Looking Back Improved definition of goals (vision) Improved budgeting Corporate sponsorship Start prototype building earlier

Looking Forward Improved wireless capabilities More memory for server Incorporate Ethernet Ball valve vs. solenoid valve Shock factor! Visual / Audible warning indicators Larger screen

Acknowledgements Tim Therault – Industrial Consultant Prof. VanderLeest – Team Advisor Brian Honeck, Eric Walstra, Darryl DeBruin – CEAC Reviewers Bob DeKraker – Parts Ordering Phil Jasperse – Shop Help

Questions?