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NNTP-Posting-Date: Fri, 17 Jan 2003 20:56:09 -0600
From: Barry Lennox
Subject: Re: Looking for a simple laser pointer design/schematic
Date: Sat, 18 Jan 2003 15:58:31 +1300
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On Thu, 16 Jan 2003 22:01:39 -0000, "Danny H."
>I know its easier to buy them, but im looking to build a device with a
>mounted laser pointer on it...a scaled down version of one...instead of a
>long tube shape i want a small box. Its for a specific purpose, and needs
Go and buy an el-cheapo pen type one for $7 or so, then re-arange the
inside to fit the desired new shape.
You can improve the beam shape and focus considerably by using a
plastic lens from a disposable camera. You should be able to get a bag
full free from a friendly photo-processor. Sometimes you can get
whining about how dangerous they are, and yes the flash cap does hold
about 200volts for days. Takes a good chunk out of a little
screwdriver! So now I use a big ugly old screwdriover normally
reserved for opening cans.
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