One Man's Adventures into Renewal Energy
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Solar Tracker Sensor - MK I

Getting the light sensor for your tracker working well is one of the most important aspects of your tracker.
There isn't much point putting in loads of effort into the construction, if the tracker never reliably points towards the sun.

If your sensor doesn't work, none of it will!

Things to consider -
I had a go at a sensor, the MK I.
It unfortunately failed a test - That test being - will it keep water out when ducked into a bucket of didn't.
That's not to say it's a bad design. With some tweaking it may have survived, but I decided to ditch this design for another... The MK II

I figure someone may benefit from my workings on the MK please read below.

27th May 2012 - The early stages

Solar Tracker Sensor
The four LDRs mounted on veroboard. Because of the veroboard's uniform hole pattern, it is very easy to ensure all the LDRs are equidistant apart

LDRs were purchased from Maplins
Value = 10K
Cost = Approx 1 each

Solar Tracker Sensor
The back side of the veroboard. Use a dremel or similar to cut the veroboard trackhover

Solar Tracker Sensor
I found this plastic lid which just happened to be perfect size and shape. This is needed to protect the LDRs and veroboard from the elements

Solar Tracker Sensor
The completed unit mounted in the plastic lid

Solar Tracker Sensor
Plastic shadow vanes hot glued to the veroboard. I used the black plastic from a CD case to create these, which worked very well. You can also see the wiring on the veroboard where I came in from the back of the veroboard and looped over to create a good solder joint

Solar Tracker Sensor
Everything now mounted, glued and secured. I also dropped in a few beads of silica gel, just in case moisture got inside. It's now ready for fixing to the Solar Panel frame.

Next - The Sensor MkII


William C Dixon - 09/04/2017 13:41:33
Please send me the pinout of the ldr to arduino please

William C Dixon - 09/04/2017 13:38:17
Please send me the pinout of the ldr to arduino please

Gil - 20/01/2017 03:31:31
Hi. I have requested a copy of the schematic and other diagrams last year. I haven't received any yet. I want to do this project. Please send the bigger diagrams. Thanks

gil - 25/08/2015 19:48:31
Hi. Nice work. Please let me have the bigger schematics. thanks

Aimalshah - 12/08/2014 16:15:15
How v can parpare light detactor on veroboard

Bill - 05/08/2013 08:35:45
I like the simplicity

Alex - 27/03/2013 03:13:20
great Idea. I will surely try.

SrmBya - 13/01/2013 09:17:57
Cool idea,

gaz - 28/05/2012 10:36:45
the silica gel is a good idea


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Human Check - What colour is the sky?


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