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Old 12-21-2008, 05:16 PM #1
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Default L...... Throwie

This evening i dissamble a sled and look around what is usable.
And i think about the magnets. *:


After small brainstorming i remember these cheap 1-5mw red module i bought some time ago.
And luckily i have hundreds "LR44" 1,5V button cell left, from another projekt.

Small test and 3 volt are ok for the modules.
I solder the lines direktly to the button cell.
The magnet hold both button cells together.


Here they are world first "Laser Throwie" *;D

:exclamationHandle with care its still laser!!! :exclamation

Daniel



:exclamation
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Old 12-21-2008, 05:28 PM #2
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Default Re: L...... Throwie

nice
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Old 12-21-2008, 05:33 PM #3
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Default Re: L...... Throwie

Heh.. Clever.

A bit big for a throwie, and hardly a world's first...

Here's a little one I made... It has no lens, since I was basically using it as a really bright LED, though even if I put an aixiz head on it the magnets were powerful enough to hold it up.
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Old 12-21-2008, 05:45 PM #4
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Default Re: L...... Throwie

I always thought one of the connotations of a "throwie" was "throw away" as much as throwing to stick on something. So this might be a bit expensive for a "throwie."
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Old 12-22-2008, 12:53 PM #5
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Default Re: L...... Throwie

My throwie is not expensive. Laser module just cost about 2$

But another big con.
Battries are empty right now, after only one day.

Ok forgott my sunday afternoon invention.

Daniel
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Old 12-22-2008, 01:54 PM #6
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Default Re: L...... Throwie

Those batteries dont have much capacity to start with, perhaps a blink circuit would extend lifetime a bit.

Also, i wonder how good directly soldering wires onto them is - i think the temperature might degrade them.
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Old 12-23-2008, 01:06 PM #7
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Default Re: L...... Throwie

i solder very hot and very fast, this project is nothing serious.

Just play araound with lasers. 8-) :
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Old 12-23-2008, 04:30 PM #8
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Default Re: L...... Throwie

how do you get the solder to stick
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Old 12-23-2008, 05:59 PM #9
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Default Re: L...... Throwie

rather than soldering to the battery, you could solder to a small bit of steel can (&quot;tin can&quot; then use the tiny maggots to attach the steel to the battery. *
Or you could just wrap with electrical tape. ;-)
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Old 12-24-2008, 03:58 AM #10
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Default Re: L...... Throwie

sand the surface you want to solder.

Use much heat but short time, maybe solder on a &quot;heatsink&quot;.
Normally its not ok to solder button cells, its just for fun.
Button cell dont like the heat it shorten there lifetime and wortscase it can exlode. :

take care please
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Old 03-16-2010, 09:29 AM #11
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Default Re: L...... Throwie

Hey bro,

I'm new to this, and I want know the estimation about how long will the button cell will last if I use for red laser module 650nm 5mW? how many voltage usually you use for that kind of module?

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Old 03-16-2010, 02:36 PM #12
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Default Re: L...... Throwie

Quote:
Originally Posted by cendol89 View Post
Hey bro,

I'm new to this, and I want know the estimation about how long will the button cell will last if I use for red laser module 650nm 5mW? how many voltage usually you use for that kind of module?

Man.... you need to read the Date of the Post you are replying to...
This Thread has been DEAD for over a year....




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Old 03-28-2010, 01:36 AM #13
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Default Re: L...... Throwie

Lol. "Thread Necromancer" *Saves that to HDD*
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Old 03-28-2010, 06:55 AM #14
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Default Re: L...... Throwie

There are a few others too thread necromancer - Google Search
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