Fig.1 Final design of the project

The AC Team consists of: Jesse Cody, Jack Gates, Alec Howard, and Jeremy Potter. We worked with Zane Middle School to create a portable charging station that can charge robots, and it can also be used to light up an area at school events. The name given to this awesome contraption is the solar station. We started the design process with a brainstorming session, then moved onto more specific areas of the project.

Background[edit | edit source]

In 2015, in Engineering 215 at Cal Poly Humboldt, the AC Team was assigned to make a solar outdoor lighting system. Our original objective was to design a safe, reliable, energy efficient solar powered, outdoor lighting system at Zane Middle School that functions as an educational resource for students. That project was soon to be altered into a more educational, more purposeful, more inspiring project. It was decided through a series of steps that it would be more useful to make the solar station. If you want more information about the AC Team you can click on this:

Criteria[edit | edit source]

We had nine different criteria that had an effect on how we built the solar station. We rated these criteria on a scale of 1-10; 1 being the lowest, less important criteria and 10 being the highest, most important criteria. If you click on the arrows on the right of "Criteria, Constraint, Weight" it will rearrange the table.

Criteria Constraint Weight
Safety Meets school policy guideline 10
Ease of Maintenance Janitor serviceable 5
Reproducibility 8th graders can make it 8
Durability (Long Lasting) Vandal proof 5
Aesthetics Pleasing to the eye 8
Educational Middle school understanding 9
Inspirational Makes students think 7
Cost Will not exceed 400 dollars 3
Ease of Implementation Will not have to get third party approval 8

Description of final project[edit | edit source]

The final project consists of nine major components. If you click on the picture it will enlarge to the original picture. First, we have four 0.6 Amp hour, 12 Volt solar panels connected in parallel. The power then runs through the charge controller, which analysis the charge going to the battery, and it also analysis the charge coming out of the battery. The battery is a 12 Volt, 26 Amp hour deep cycle lead acid battery (it does a very good job of charging everything it needs to charge). There is a fuse on the battery that protects the whole system if there is too much current (flow of energy, also called the "load" of an electrical system) coming from the battery. The current then passed through the charge controller again and goes to a 12 Volt and a 10 Volt bus (The bus bar has one input of power that has multiple power outputs). The 10 Volt bus bar has one purpose, to charge the robots. The 12 Volt bus powers the multicolored programmable LED lights, and also the USB charger. The LED lights are to be used at school events when it gets dark, but they also happen to make a very cool lighting effect. The USB charger has different Amp settings, so you can charge anything that is powered by a USB port.

Costs[edit | edit source]

Below are the cost in materials, and the cost in hours.

Item Quantity Retail price per item ($) Total Team price per item ($) Total
Battery 1 63.99 63.99 63.99 63.99
TV Cart 1 60.00 60.00 Donated 0.00
Fuse Holder 1 3.45 3.45 3.45 3.45
Fuse 1 3.80 3.80 3.80 3.80
USB Charger 1 16.99 16.99 16.99 16.99
Charge Controller 1 21.99 21.99 21.99 21.99
Voltage Regulator 1 9.32 9.32 9.32 9.32
Solar Panels 4 60.00 240.00 Donated 0.00
Street Signs 3 8.33 25.00 8.33 25.00
Velcro Tape 1 7.99 7.99 7.99 7.99
Silicon Calking 1 5.99 5.99 5.99 5.99
Flexible Wire Conduit 1 4.49 4.49 4.49 4.49
Heat Shrink 2 3.99 7.98 3.99 7.98
Plastic Wire Cover 1 6.99 6.99 6.99 6.99
Piano Hinge 1 9.99 9.99 9.99 9.99
Aluminum 3/8" Rod 1 7.99 7.99 7.99 7.99
8mm Screw 48 0.17 8.16 0.17 8.16
8mm Nut 48 0.27 12.96 .027 12.96
8mm Lock Washer 18 0.09 1.62 0.09 1.62
127 Piece Heat Shrink 1 4.99 4.99 4.99 4.99
Wire 3 1.19 3.57 1.19 3.57
11/64" Drill Bit 1 2.49 2.49 2.49 2.49
Black Primmer 1 4.99 4.99 4.99 4.99
Chalkboard Paint 1 7.49 7.49 7.49 7.49
220 Grit Sandpaper 1 1.49 1.49 1.49 1.49
5" Wire Stipper 1 2.99 2.99 2.99 2.99
Titanium Step Drill 1 7.99 7.99 7.99 7.99
Total Cost $246.60

Testing Results[edit | edit source]

Testing results will be entered soon.

How to build[edit | edit source]

A How-To will be uploaded soon. Use Template:How to

Discussion[View | Edit]

  • add links to your appropedia pages with your names, this should go into the background section
  • add a final design photo at the top of the page
  • explain in an introductory paragraph how constraints were developed example) interviews and brainstorming sessions
  • add some writing that describes your final design and refer to the nice gallery you have
  • the description section should also include a how to use subsection similar to the how to build table
  • add the design costs, your pie chart with a caption to the cost section
  • continue working hard and finish up the remaining sections
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