Saturday, January 9, 2010

Closing in on Solar One

For any who have interest in my solar project, below is an excellent link that I used almost exclusively:

www.diypvsolarenergy.com/basic-solar-panel-design/

With few exceptions, I followed this site in the construction of my panel. I havent put a lot of notes next to my pictures....I really didnt have any intention of making this site a do-it-yourself tutorial for building solar panels. Just some pictures of my project to show that anyone can do it....lol. Cost?

5/8" Exterior Plywood $3.84 Lowes
.08x4'x2' Plexiglass $19.37 Lowes
Pegboard $3.39 Lowes
37 each 3"x6" Solar Cells - Kit $55.30 Free Sun Power
Galv. Screws $5.00 Lowes
Silicone Caulk approx. $1.00
Paint Free
12 Gauge Wire Free
Project Box approx. $3.00 Radio Shack
Wire Terminals $3.86 Radio Shack

Plywood, pegboard and caulking compound pro-rated costs.
--------------------------------------
total $94.76

So there you have it. $100 for what should be approximately a 60 watt solar panel. As you can see in the pictures below, outdoors I am measuring over 20 volts in bright sun. But, I must be doing something wrong in my attempt to measure amperage, because the multi-meter is not registering anything. Perhaps I need to run this to ground to get a reading?





Over 16 volts inside the house.





Drilling the plexiglass for the attachment screws.









The "project box" from Radio Shack in place on the back of the panel. I guess project box is nothing more than a fancy word for junction box.






Over 18 volts even in the shade.

2 comments:

Rick said...

Moorso,

To measure the current out...
place your ammeter in line with the red positive wire of the solar panel. Red meter wire to the positive (red) output of the solar panel. The black wire of the meter would go to the positive side of a load.

For a load I would suggest a depleted battery that you are charging (I'm thinking a large car battery or gel cell). Black wire of the meter is attached directly to the negative side of your load.

With a heavy load you should get a good indication of what kind of current your panel will supply.

Rick

mOOrso said...

Thanks Rick. I shall give it a try. Maybe the other thing I should check for is to see if the fuse in the multi-meter might be blown ??