Running a 3v laser module off a Prop1
This will be part of the how-to, but the question was asked by a couple folks regarding how Pete ran the 3v laser module off a 12v Prop1 OUT pin. Boy howdy you get some freaky effects from pulsing the laser against the motor speed. Have fun with this one.
I came up with this handy schematic for those that need to know. If I'm not mistaken the resistors we used were rated at 10 watts.
This example assumes you put the laser on OUT 0
I came up with this handy schematic for those that need to know. If I'm not mistaken the resistors we used were rated at 10 watts.
This example assumes you put the laser on OUT 0
Comment
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Comment by Prof. Phere on August 28, 2009 at 8:13pm - Ninja is a nice name for a girl.
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Comment by Pete on June 27, 2009 at 3:04pm -
It's always challenging. I was inspired and made a continuous fogger on the cheap. That and a little sheltering (tarps, fence whatever) to make a somewhat sheltered area works pretty well.
I've been running on our yard walk through for the last couple years, without major problems using the above ....
That's my experience and 2 cents .....
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Comment by RedNeckGurl on June 27, 2009 at 1:37pm -
The ninja's are all very scary, but I'm just a Redneck from Texas -- I love the laser vortex (oooh, shiny!), but seriously, how can I make one for an outdoor application? Our haunted trail is in a cornfield on our farm, I think this would be awesome!
Thanks for any info you can share -- tk "RedNeckGurl" :)
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Comment by Pete on June 24, 2009 at 11:26pm
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Note: Zener diodes are designed to operate on the reverse breakdown of the device. as you can see in the diagram it is installed contrary to standard diode conventions.
If it was installed the conventional way, it would only allow a .6-.7v drop across it. Its the reverse breakdown that allows them to operate as a regulator, and that is what we want so we have enough to run the laser (at 3V) and regulate it so it does not exceed that voltage
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Comment by Pete on June 24, 2009 at 11:17pm
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second revisoin, still no ninjas
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Comment by Steve O on June 24, 2009 at 10:17pm - OMG, that is one scary ninja..
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Comment by Eric on June 24, 2009 at 8:23pm -
I did the schematic with Autocad 2004, here's the updated version!
You think my ninjas bad a#$ enough?
-Eric
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Comment by Lotus on June 24, 2009 at 12:22pm - what program did you use to make the schematic Eric and Steve is right the ninja does not look pissed off enough
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Comment by Pete on June 23, 2009 at 10:19pm
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NOTE:
This is valid for use with 12Vdc on the propX
it should hold up to the 15V mark after that resistors will need to be adjusted
The resistors need to be 5W as they will be absorbing about 2W (gotta have a safetey margin, its just good design)
Steve since when were you actually oriented (left or right) ?
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Comment by Steve O on June 23, 2009 at 9:37pm
- The ninja needs to be a little more pissed off. And make sure you mark that it's a zener diode. For the sake of orientation keep V+ on the left. Other than that, rock on.
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