HELIOSTAT SUN TRACKER SOLAR POWER FRESNEL LENS GREEN ENERGY
Posted on 19. Jun, 2009 by admin in Tech
GREENPOWERSCIENCE asked:
This is our first attempt at a useable Heliostat for our Fresnel Lenses. In future videos I will have all the information for a DIY system using very easy to find materials. We are developing a controller that is simple to program and can control any type of DC or even AC motors. Once completed I will share some open source information.
lennyhome
Jun 19th, 2009
Ubuntu linux FTW
enicao
Jun 20th, 2009
Why do you need a computer or complex electronics to track the sun?
I think a system with 2 very small solar cells and a motor are enough. ( a bit difficult to explain writing)
- the positive side of the panels are connected together to the plus side of the motor. so the 2 cells are working against each other. the one who receive more sun light produces more power and turns the panel it’s way, until both have the same power (facing the sun).
this system is very simple, light and self powered.
toor81
Jun 20th, 2009
Yea linux rock’s
peppoj
Jun 22nd, 2009
Linux
:D 
:D 
svesolar
Jun 22nd, 2009
I have a cost effective solution build a tracking system. 2 axis 4 bearings simple electronics and works.
PsychedelicRhino
Jun 23rd, 2009
Youtube added a space in album and telescope in the link. Remove them. Also (of course) replace (dot) with a period.
PsychedelicRhino
Jun 23rd, 2009
Here’s my freznel cooking some chicken. It’s a very similar setup to Dans.
img(dot)photobucket(dot)com/albums/v606/Cyberdactyl/Telescope/Cookin.jpg
img(dot)photobucket(dot)com/albums/v606/Cyberdactyl/Telescope/lens1.jpg
img(dot)photobucket(dot)com/albums/v606/Cyberdactyl/Telescope/lens2.jpg
traviscadden
Jun 25th, 2009
Re: Cloud cover affecting a phototransistor system. These always look for a balance of light. The ones that keep moving simply have not been designed with a setpoint that would tell them movement isn’t worth it at the time. When correctly designed they will only move every 10 mins or so under bright sun, as the setpoint is exceeded.
Your nephew will probably have a very good idea of how to build in this differential, as well as other improvements. BEAM robotics also point the way.
bg0821
Jun 28th, 2009
I have a solar oven and recently took a stepper motor out of a copying machine which I thought of hooking up to a ac timer device to turn on and off the motor now and then would be nice to move the oven. the motor I have and there are different configurations is a reversing polarity type which pos and neg is alternated for the motor to move a step. well, maybe relays with batteries and diodes would do the trick. I have to think it over more. nice job there.
earthday78
Jul 1st, 2009
cant wait to try it
sunimagine
Jul 3rd, 2009
Dan Denise
Clic on my nick !
desiredusername
Jul 3rd, 2009
I’d figured some of this out on my own, but the dual heat sinks are brilliant. Thanks for the tip.
AdminOnDuty
Jul 5th, 2009
Make your system self contained. Put the driver and motor in a sealed box along with a gel cell battery. Some of the produced power can keep the battery charged. Heat sinks can be mounted inside and outside and bonded with brass screws through the box (seal with RTV) to keep the internal temperature at the same as the outside temp without circuilating moist air inside the box. I designed my first heliostat in 1977 - Cheers
sunimagine
Jul 8th, 2009
Now you must build the moovement who follows the earth rotation Est to West.This will allow the machine to focus sun permnently.This moovement is in the order of a quarter of degree per minute,such a demultiplication!!!!The last step of your work is a rotating base adapted to the aparatus you show in the video.This way,you will obtain permanent focusing!
Congratulations for this work.Go ahead!!!
GREENPOWERSCIENCE
Jul 10th, 2009
Thank you very much for the nice comments:-)
florifattori
Jul 10th, 2009
Dear Dan and Denise:
We are really proud of your experiments. Solar concentration through optical devises are very promising tehcnologies. We think that the HELIOSTAT SUN TRACKER its very important, in order to capture and profit the most sunlight as possible!!
Good luck with your future developments!
GREENPOWERSCIENCE
Jul 11th, 2009
Thank you. You have some nice Stirling Engine Videos.
impazzitoinvolo
Jul 14th, 2009
Stepper motors are the best for this aplication.
Congratulations GPS!
killerrobot88
Jul 16th, 2009
pass the denise rojas email
desiredusername
Jul 17th, 2009
Well yeah, I was thinking a rubbermaid container. But there’s always leaks and such, especially where the power cord comes out. (It has to have a power cord for the motor.)
I’ll think of something, though. I should really post a video or at least a blog entry detailing what I’ve done with your acrylic mirror idea.
GREENPOWERSCIENCE
Jul 19th, 2009
Thank You:-)
GREENPOWERSCIENCE
Jul 22nd, 2009
COOL! Take some thin plastic or acrylic. Make a rough mold out of clay or cement of the interior components. A block of wood will work too. USe a heat gun to mold the acrylic. Or find a plastic jar/container.
desiredusername
Jul 24th, 2009
No way! I just programmed an Arduino to control a stepper to do this same thing LAST NIGHT.
The biggest question I have is how to waterproof the whole thing for being outside full time.
tommcc99
Jul 26th, 2009
You keep doing the good work! I want this technology. As soon as i get my trough built I will call.
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Jul 28th, 2009
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Jul 28th, 2009
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bennymcfarlane
Jul 28th, 2009
I think defining the word “heliostat” would have made it easier for me.