1. ETEC 4301 Design Lab Jacob Ison Solar Energy and The Family Farm: The Mid-Semester Edition!

2. System Layout Solar Panel House Drinking Trough Storage Tank Water Source Pump Charge Control Battery Bank System Control Fill Valve

3. Ok, Where in the world am I at? ● A couple design changes. – New design for gravity fed water supply. – New method of charge controlling. ● Major Components have been tested and working except for the Solar Sensing Circuit. ● Just started the rough draft of the paper.

4. Arduino and Ethernet Shield ● Arduino Uno R3 with an Ethernet Shield. ● Computer can now connect to HTML status page. ● Major problem at first, but the connection of the Arduino must be bridged with an internet connection. ● HTML page refresh META tag now works as well.

5. Storage Tank Level Detection ● Using a Devantec SRF04 Ultrasonic Range Detector. ● Mounted to box and tested with the Arduino. ● Ready for final assembly.

6. Drinking Trough Level Detection ● Using a Float arm connected to a 5K potentiometer. ● The theory has been tested with the Arduino and worked, but it still needs to be adjusted and aligned.

7. Temperature Sensing and Battery Charge Level Detection ● Temperature Sensor is the LM335Z IC. – It converts change in temperature to voltage. – Tested and design finalized. ● Battery Charge Level Detect is a Voltage Divider. – Uses a 110K resistor in series with a 40K resistor. – Takes the 12V battery level and scales it to 5V.

8. Solar Output Sensing ● Solar Output Detection is the last piece to be designed. – Thoughts of using a current viewing resistor either connected directly to the Arduino or using an Op-Amp circuit.

9. Tank/Trough ● Two tubs are used in place of the two tanks. ● The tanks are connected together with a gravity fed hose into a float shut off valve.

10. Solar Panel ● Solar Panel has been tested in full sunlight at 22V, current has not been tested yet. ● This was the source of many problems at first. ● Solar Cells are EXTREMELY FRAGILE!!! – Handle with extreme care! ● Trying to assemble all the components of the panel and not break or crack the cells proved to be more of a challenge than it sounds.

11. Solar Panel ● Photos of the complete panel and stand.

12. TIME! ● I had planned to have all the sensors tested and most of the project assembled and have some of the paper already done. ● I am not quite that far, but very close. – I have already started the paper, although not very much of it is done yet. – All of the sensing systems have been at least prototyped except the Solar Output Status Indicator. – The pump also needs to be added. – My weekly blogs have tracked my progress from the presentation week.

13. TIME! 2 1 6 2 3 4 5 8 Design/Order Parts Construction of Solar Panel Plumbing and Stands of the Tubs. Connect PC to the Arduino to test web functionality. Design, Develop and Program Sensor systems. 7 10 9 Connect Sensing Systems and Physical Systems Write Paper Give Presentation and DONE!! Finalize Project and Debug System