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Old 11-11-2009, 09:58 PM #1
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Default Shapes

I was wondering if there's something I can buy that can place in front of my laser to make small geometric shapes? I'm thinking of wanting to produce a triangle shape at the size of 1 inch at 10 yards away.


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Old 11-12-2009, 04:16 AM #2
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Default Re: Shapes

Some of the cheap red pointers include a variety of difraction gratings to project "stuff" on a wall. They may not hold up long with a high power green or BR but you can get an idea.

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Old 11-12-2009, 05:03 AM #3
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Default Re: Shapes

My spyrograph can make a triangle with fine tuning. I'll post a picture tomorrow.
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Old 11-12-2009, 08:53 PM #4
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Default Re: Shapes

Alright I gave it a shot. This is with two motors:


I decided to try to make a square. I got close (it's more like a parallelogram.) This required three motors.

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Old 11-23-2009, 08:35 AM #5
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Default Re: Shapes

Hey jimmy, how much power do you use in your spiro?
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Old 11-28-2009, 05:18 PM #6
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Default Re: Shapes

For the motors I use a 6V wall adapter (I forgot the mA, I can check in a few days though), with 3 1Kohm pots for each motor to get fine tuning.
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Current Lasers:
8??nm: 1050mA DIY Micro Sized
658nm: 2mW keychain pointer - DIY 80mA/350mA switchable in Altoids tin - 300mA DIY Micro Sized
632.8nm: 10mW Hughes HeNe - 15mW Melles Griot HeNe - 1mW Melles Griot bare tube
612nm: 5mW Meredith Instruments HeNe
594.1nm: 4mW Meredith Instruments HeNe
543nm: 2mW Melles Griot HeNe - <1mW Multimode 6" HeNe (He's cute!)
532nm: 5mW Lyra-G5 - 70mW DIY by Wannaburn
473nm: 5mW Lab Style
445nm: DIY 650mA in Sonar II Host
405nm: DIY LG 10X at 330mA with Ehgemus host and Microboost - CNI GLP-405 70mW
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