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Author Topic: ArduinoBeam - Suntracking skylight  (Read 668 times)
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I've just returned to this project I started way back in 2010. I have done a bit of mechanical design work in solidworks and now have what I think is a good looking design.

I'm keeping a blog of the project here http://arduinobeam.blogspot.co.nz/ and am adding a git repository with the cad models (solidworks format) as well as the arduino code etc. I'm hoping to start a build soon but just need to get access to a CNC mill. I'm hoping someone else will be keen to build one also.
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seem to work quite well,

But isn't it simpler to just get 1 rotation in 24 hours = 86400 seconds ?
What is the smallest angle /step the system can make?
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Rob Tillaart

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I'm not really sure what you mean. The system uses a real time clock and the commanded position is based on the time of day, so in effect it is doing 1 rotation every 24 hours.

Right now it uses an equation to work out the suns position, but I think a better way to do it is have the machine running in celestial coordinates and use a kinematic transformation to drive the motors.  That way other targets could be easily added ie the moon at night.

As for resolution this is defined by the gearing used. The gear on the azimuth (horizontal) axis is much bigger as the beam shines through a hole in its center. current design gives resolutions of :
Elevation mirror 0.23 deg/step
Azimuth axis 0.04 deg/step
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Quote
I'm not really sure what you mean. The system uses a real time clock and the commanded position is based on the time of day, so in effect it is doing 1 rotation every 24 hours.
I assumed you used the light intensity to track the position, but you do it by clock.
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Rob Tillaart

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