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Old 05-03-2008, 02:18 AM #1
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Default Laser Show with Step Motor is closed loop?

I wanna do a lasershow with step motors.

I saw a lot of schematic where to draw with good precision, is necessary a closed loop control (PID, or only PD)

I saw too many lasershow using step motors instead of galvos.

Those L.Show do a good job? There is a closed loop controls ?


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Old 05-03-2008, 03:53 AM #2
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Default Re: Laser Show with Step Motor is closed loop?

closed loop implies the idea that the scanner control has feedback from the motors (usually an optical encoder of some sort) and while stepper motors can be used for a basic laser show, they lack the speed and precision needed to do complex scanning
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Old 05-03-2008, 08:44 AM #3
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Default Re: Laser Show with Step Motor is closed loop?

http://www.laser-man.co.uk/2006/inde...3&Itemid=6
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Old 05-03-2008, 01:58 PM #4
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Default Re: Laser Show with Step Motor is closed loop?

laserman delivers! tyvm +repz
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Old 05-03-2008, 03:09 PM #5
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Default Re: Laser Show with Step Motor is closed loop?

MarioMaster, so, you confirm my thought... with step motors, the LS donīt have feedback.

Andy: nice link!
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