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Old Feb 10, 2006, 10:04 AM   #1
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I just picked up one of these at Circuit City for $4.49. It's actually a bicycle tail light, so it has red LEDs, but it looks like it can be modded with white LEDs fairly easily. I can also see how a 1/4x20 screw could be attached to mount it on the cams tripod mount.

I'm not very knowledgeable about LEDs though. Does anyone have input about a good (cheap) type of LED for this application (maybe even an IR LED for night use)?

Thanks in advance,
MPVRr


http://www.shoplocal.com/shoplocal/i...7_-nexxtech.fp


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Old Feb 10, 2006, 10:38 AM   #2
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Hmmm.... It looks like the LEDs may be available cheaply from :

http://www.theledlight.com/led-specs.html

Looking for suggestions.... 3mm or 5mm... warm white, blue/green :??

Thanks in advance,
MPVRr
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Old Feb 10, 2006, 12:45 PM   #3
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Some of my favorite places for supplies, (my wife calls it junk):

http://www.goldmine-elec.com/default.htm

LED Section http://www.goldmine-elec-products.co....asp?dept=1088

LED Flash lights http://www.goldmine-elec-products.co....asp?dept=1277

http://www.ramseyelectronics.com/

IR LED Illuminator kit http://www.ramseyelectronics.com/cgi...on&key=IR1

I was also thinking while looking on the Ramsey site. Another option if you wanted to take night video, since the MPVR has a video in you could always use an external CCD Lipstick cam. Or even a wireless "nanny cam".

I originally got the MPVR to record wireless video from RC planes, Model rockets, and such, without having to drag a lot of equipment around. The Hybrids really lend themselves to the creative mind.
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Old Feb 10, 2006, 1:06 PM   #4
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Wow! That place really is a geeks goldmine.

Thanks for the links!
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Old Feb 10, 2006, 1:18 PM   #5
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" I'm not very knowledgeable about LEDs though."

The thing about LED's is that they are current controlled devices. If you don't limit it with a resistor, you'll get a nice flash before it burns itself out. Rule of thumb is 20mA.

The other problem you might run into is the voltage needed for the LED to start conducting. Red LED's are usually the lowest at around a volt. White and blue LED's are around 4 volts. An DVM (Voltmeter) with a diode check will tell you the voltage needed.

That bicycle light might not have enough voltage to turn on another color LED.

http://members.misty.com/don/ledd.html
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Old Feb 10, 2006, 1:49 PM   #6
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Good call. Thanks again!

I wonder if I can reduce the number of LED's proportionately, and just jumper across the ones that I exclude. There are six on the board now, with 2x AA batteries.

I'll have to do some more research. At least, if I get a brilliant flash and a burning smell, it won't have cost much. :G:G

I'll remember to wear goggles for the initial test.

MPVRr
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Old Feb 10, 2006, 1:57 PM   #7
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MpVr. can you test this just one more State over, so I do not get an aftermath?

I have a 9 led white flash light and well ummm rather leave it alone Lol 3x aaa system as long as the batteries are seriesforvoltage the more the higher and parallel the more the max same voltage. hope that helped a lil.
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Old Feb 10, 2006, 2:04 PM   #8
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BOOOOOOOOOooooommmmmmm.........

Too late Fishy..... sorry.... :O


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Old Feb 10, 2006, 2:35 PM   #9
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that's alright i am gonna get the white ashes in a few days...............

the flashlight can be used but may not be strong enough at all, it may just rab the persons face and part body. 3 feet may be enough.

a stronger light like aflourecent may work wel, they make a small one throwsa different light. but no maximum distance.

what i found great was a reflector with a bulb. what I find not good is an over head incadecent light

he badpart about lighting is if you shine foward only the front will have light and anything behind will not

what is the purpose of the condition that you need to film for? just general stuff?

I do want a better lighted camera as well and the jvc and cannon camcorders use 2 led lights we need to find out those leds and utilize them to our cameras.
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Old Feb 10, 2006, 3:16 PM   #10
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I really just want a general light for low light conditions. I figure that I can play with the LED positions to get a nice dispersal, and heck, it's just fun to tinker. In the end, I hope to have the equivalent of a CameraBright, but for 75% less (and have had some fun doing it).

Also, now that I know that the MPVR likes IR, I hope to make a cheapo night light for my MPVR. I may never use it for anything particularly productive, but it would be fun just to do it...

You know...?

MPVRr
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