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Old 05-25-2013, 02:19 AM #1
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Default Driver Question

Where can i get an affordable 250ma driver?
I've tried making it but always fail (don't know which way the lm317 goes)

And will one 18650 li-ion battery power my lpc-826 at 150mw perfectly?


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Old 05-25-2013, 12:44 PM #2
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Default Re: Driver Question

Check the BST or Laser Pro Shop for a linear or buck driver.
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Old 05-25-2013, 07:52 PM #3
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Default Re: Driver Question

I found this
Red laser IR laser diode driver 80-500mA

Details:
This Driver is for RED & IR Laser Diodes
Adjustable output
Constant current power driver 80-500MA
Size :10*20mm
TTL modulation 0-5VDC
2.5v laser on
Max Output: 2.5v, 500ma +/-
(808nm 250mw LD)
660nm 150mw LD
80-500mA
Input Voltage: 5V



I dont need it to be small or anything

So ill get this and 2 li-ion 18650s
Am i set?
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Old 05-25-2013, 10:12 PM #4
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Default Re: Driver Question

The wiring of the LM317 is pretty simple.

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Old 05-25-2013, 10:19 PM #5
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Default Re: Driver Question

^ that's pretty sweet, never thought about that!!
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Old 05-25-2013, 10:23 PM #6
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Default Re: Driver Question

Im not good at soldering i absolutely suck
So ill just go ahead and buy the driver and just solder 4 cables on
But thanks

And with the two 18650s im done right?
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Old 05-25-2013, 10:27 PM #7
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Default Re: Driver Question

The driver you mention has a pot. Do you have a testload to set the current ?
It needs 5V input. I don't know if two 3.7V 18650 will fry the driver.
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Old 05-26-2013, 04:29 AM #8
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Default Re: Driver Question

No i dont have a test load
Do i really need it?
What are the chances of it getting damaged?
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Old 05-26-2013, 05:21 AM #9
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Default Re: Driver Question

The question you should be asking is, "What are the chances of me getting it right, without any tools, instruments, and experience?".
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Old 05-26-2013, 05:57 AM #10
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Default Re: Driver Question

The chances are slim but if i don't do it now i wont ever do it
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