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LED On Indicator?

P

paulham

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Feb 16, 2008
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hi
i am building my dvd laser project, and its all going well so far.
i have just bought a project box for it to fit into, but i was wondering how i could wire up a LED indicator next to my button, just to let me know the laser unit is on?
i could eaisally wire it up but will it take alot of power away from my ddl driver?
help would be greatly appreciated!
thanks
 





FireMyLaser

FireMyLaser

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Jan 12, 2008
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The laser itself is a good inicator ;D. LED + resistor after the switch, back to GND on the input should work I think.
 
FireMyLaser

FireMyLaser

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Then use a 330 ohm resistor in series with the LED and it will take 16ma which is good.
 
MarioMaster

MarioMaster

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Jul 27, 2007
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yes make sure you hook the led and resistor up before the driver - not after
 
M

Maxpowa

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Feb 11, 2008
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Same here, until I started using 1W Luxeons I never saw what whas going on around here. Will use a 3mm indication led on my laser box though, so as not to take away to much power from the batteries.
 
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