1. Janus Technologies A Wireless Gateway Device for the SolarMax Charge Controller Team 9 Adam Ciapponi Matthew Giassa Dan Hilbich Robert Szolomicki

2. Why: Project Motivation Team member noticed room for improvement during his coop at Analytic SystemTeam member noticed room for improvement during his coop at Analytic System Set out to realize and implement these improvementsSet out to realize and implement these improvements

3. Team Structure Flat team structure was chosenFlat team structure was chosen Equal distribution of dutiesEqual distribution of duties Each team member involved in every aspect of the projectEach team member involved in every aspect of the project

4. System Overview Our system replaces an existing interface deviceOur system replaces an existing interface device System administrators control the SolarMax remotelySystem administrators control the SolarMax remotely

5. Current Implementation Direct physical connection to the SolarMax Direct physical connection to the SolarMax Features pushbuttons and an LCD Features pushbuttons and an LCD

6. Modified Version Accomplishes the same tasks as the original Accomplishes the same tasks as the original Adds wireless connectivity to the original design Adds wireless connectivity to the original design

7. High Level Design Several additions to original designSeveral additions to original design –Wireless data transfer –Ethernet interface –Scalable design

8. LCD and Pushbuttons Larger LCD Larger LCD Displays output data by menus Displays output data by menus Doesn’t display all data at once Doesn’t display all data at once Communicates VIA ICCommunicates VIA I ²C

9. IC Communications I²C Communications

10. Wireless Communication Separate wireless adapters for:Separate wireless adapters for: – Each SolarMax unit – The wireless gateway device

11. RS232-to-Wireless Adapter Attaches to each SolarMax unit Attaches to each SolarMax unit Connects the SolarMax to the wireless adapter Connects the SolarMax to the wireless adapter Low-cost adapter board Low-cost adapter board

12. Internet Connectivity Device connects to the internet Device connects to the internet Has a built-in web server Has a built-in web server Controllable with a web browser Controllable with a web browser

13. Business Case Narrow market already exists Narrow market already exists Janus Technologies originally proposed the idea to Analytic Systems Janus Technologies originally proposed the idea to Analytic Systems Further additions will increase its value Further additions will increase its value

14. Development Costs Overall development costs were around $700.00 Overall development costs were around $700.00 Gateway is most expensive piece Gateway is most expensive piece SolarMax adapters are much cheaper SolarMax adapters are much cheaper

15. Development Costs (2) Future implementation will be one gateway, multiple SolarMax adapters Future implementation will be one gateway, multiple SolarMax adapters Would offset the cost considerably Would offset the cost considerably

16. Competition Janus Technologies is the sole provider of this type of system at the present time Janus Technologies is the sole provider of this type of system at the present time No major competition in this market No major competition in this market

17. Timeline All major tasks were broken into three tiers of development: All major tasks were broken into three tiers of development: –Tier 1: Fundamental –Tier 2: Functionally Relevant –Tier 3: Optional / Nice to have Tier 1 completed Tier 1 completed Tier 2 near completion Tier 2 near completion – Still needs SD card functiionality Tier 3 80% complete Tier 3 80% complete – Integration of ethernet board remains

18. GANTT Chart

19. Budget Considerations Equal contributions to parts purchases Equal contributions to parts purchases Analytic Systems is reimbursing the team Analytic Systems is reimbursing the team

20. Teamwork “Waterfall” design methodology used “Waterfall” design methodology used All tasks divided equally amongst team members All tasks divided equally amongst team members

21. Experience Gained Insight with different group dynamics Insight with different group dynamics Maintained regular communications Maintained regular communications Several protocols Several protocols – TCPIP – I 2 C – RS232

22. Future Work Data logging functionality Data logging functionality Integration of ethernet board Integration of ethernet board USB connectivity USB connectivity

23. Future Work [2] Digital control of antenna power Digital control of antenna power Reduce physical dimensions Reduce physical dimensions Reduce cost Reduce cost

24. Sources of Information PIC24FJ64GA004 Family Data Sheet. 2009. Microchip Technologies. 20 Jan 2009 PIC24FJ64GA004 Family Data Sheet. 2009. Microchip Technologies. 20 Jan 2009 ENC28J60. 2009. Microchip Product Catalog. 20 Jan 2009. ENC28J60. 2009. Microchip Product Catalog. 20 Jan 2009. Ethernet Solutions Design Center. 2009. Microchip Design Resources. 6 Jan 2009. Ethernet Solutions Design Center. 2009. Microchip Design Resources. 6 Jan 2009. Ian Lesnet. 2008. Web Server on a Business Card. Hack-A-Day. 4 Jan 2009. Ian Lesnet. 2008. Web Server on a Business Card. Hack-A-Day. 4 Jan 2009.

25. Acknowledgments Our professors and TA’s for their feedback on our work Our professors and TA’s for their feedback on our work Professor Leung for lending us evaluation boards Professor Leung for lending us evaluation boards Eugene Trandafir and his colleagues at Analytic Systems for the use of their SolarMax unit Eugene Trandafir and his colleagues at Analytic Systems for the use of their SolarMax unit

26. Low Level System Overview