Old 12-28-2013, 03:46 PM #17
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Default Re: Blinking problem

Do you have a known good quality cell? It's possible that a cell with high impedance can cause drivers to blink when the voltage drops and triggers undervoltage protection.


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Old 12-28-2013, 04:04 PM #18
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Default Re: Blinking problem

Yea but does that have a pattern? Because my blinking is definitely a pattern. Also I am confident it's not the batt because I pulled it all apart and hooked it up batt to driver to diode(no case no switch) and it was solid. There are two places the weak connection are possible, one is the switch since its from a cheap 2$ flashlight, and where the driver contact the casing, it just kinda brushes agains the case, I'm going to solder it on later, will update today
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Old 12-28-2013, 05:15 PM #19
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Default Re: Blinking problem

Ah there you go, we can rule out the battery. It's probably a loose connection then as mentioned before.
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Old 12-28-2013, 09:09 PM #20
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Default Re: Blinking problem

Batteries right? Your using 2? Also which driver are you using?
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Old 12-28-2013, 09:26 PM #21
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Default Re: Blinking problem

It's a boost driver I believe it's a one battery system and its set at 1.8amps output the battery's actual reading is 3.4amps plus the 4.2-3.7v range I have two to use because when I got the batteries it came in a pair of two
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Old 12-29-2013, 03:12 AM #22
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Default Re: Blinking problem

3.4A draw from a single 18650? that's a little high.

You'd need beefy switches and a really good connection to the case/host for it to work properly.
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Old 12-29-2013, 03:47 AM #23
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Default Re: Blinking problem

The mcclicky switches should be able to handle that much current.
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Old 12-30-2013, 04:02 PM #24
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Default Re: Blinking problem

So update, improving connection between driver and casing helped a lot. As for pics give me a bit as I am steel wooling the exterior today.
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Old 12-31-2013, 07:48 PM #25
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Default Re: Blinking problem

Okay bad news I fear something has happened but am unsure as to what. It is now solid dim. It also doesn't seem to want to focus and raw output has gone from ellipse to dim circle. What on earth happened?
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Old 12-31-2013, 08:02 PM #26
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Default Re: Blinking problem

Sounds like it went led from being over stressed. Too much power or not enough cooling tends to be responsible. Usually the former.
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Old 12-31-2013, 08:21 PM #27
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Default Re: Blinking problem

Would it happen to be the constant flickering of connections that had been occurring for the past several days?
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Old 12-31-2013, 10:58 PM #28
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Default Re: Blinking problem

Probably might've contributed. Diodes tend to flicker if their power is unstable, or if they are too hot. What driver are you using? And are you using a single 18650? Is it regulated or anything? Pictures would be extremely helpful too. Test your driver too, make sure it's providing appropriate voltage and current. Laser diodes are sensitive and they tend to die even if you so much as look at them wrong...
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Last edited by ultimatekaiser; 12-31-2013 at 11:01 PM.
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Old 12-31-2013, 11:16 PM #29
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Default Re: Blinking problem

The driver was from a x-boost v7 16.8mm round adjustable output, preset to 1.8amps
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Old 12-31-2013, 11:42 PM #30
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Default Re: Blinking problem

Maybe check the driver output with a test load?

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Old 01-01-2014, 04:18 AM #31
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Default Re: Blinking problem

I don't suppose there is a way to fix this...
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Old 01-01-2014, 05:14 AM #32
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Default Re: Blinking problem

Happy new year everyone at lpf!
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