Recent content by vmaldia

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  1. V

    DIY DENTAL HEADLIGHT PROJECT

    I gave advice to a friend of mine who is an ENT doctor. As an ENT doctor he always looks down narrow deep holes, even more so than a dentist so the light must ideally be right between the eyes. We looked around aliexpress and I advised him to get something like this ... hotlinked image removed...
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    18650 flashlight very ease to do

    3xAAA flashlight conversion to 18650 convert 3xAAA flashlight to 18650 Not Bad. Here's mine I had a few fake low capacity 18650's lying around and it would be a shame to waste them. I found this $1.6 flashlight. It is powered by 3 x AAA's in a holder and only has 3 5mm LED bulbs, but its...
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    can a 2xAA camera use 1x 14500 li ion?

    Well its been 2 years but I finally got around to trying it. A cheap 14500 li ion battery (4.06 v actual measurement) and a dummy battery made from a plastic rod and aluminum tape. With duct tape wound around it to give it the proper diameter. Yes it works, but you gotta align the ends of the...
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    can a 2xAA camera use 1x 14500 li ion?

    I have an old canon powershot A590IS and I was wondering if instead of 2xAA at 3v it could use 1x14500 plus a dummy battery at 3.7 or so volts.
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    1x 14500 to 2x AA (3.7 to 3v) adaptor

    Well the reason I was thinking of this is because my old canon digital camera is kinda sensitive to voltage. Even eneloop nimh batteries once they are a few months old get very decreased capacity. Maybe only 20 shots with flash when before it would go much longer. I assume that the voltage drops...
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    1x 14500 to 2x AA (3.7 to 3v) adaptor

    1x 14500 to 2x AA (3.7 to 3v) adaptor. Does such a thing exist? A 14500 battery is nominally rated to give 3.7v or a bit more and 2x AA is rated at 3v. I'm thinking of a dummy AA sized tube with some sort of voltage lowering device. A diode or something. So you can use one of those devices and...
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    "CAN Bus bulbs should not be used in non CAN Bus applications"?

    an example given is a car designed for a 5w incandescent but the CANBUS minimum threshold is around 2w so the LED bulb is 0.7w plus resistors to increase the wattage to 2w http://ledchoice.eu/en/making-led-bulbs-can-bus-friendly.html
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    Newbie battery question - CR123A or 18650 battery?

    my friend has a flashlight (one of those chinese generics). It runs off 2 C123a's. Now rechargeable CR123a's operate at higher voltage then primary cell C123a's so unless the manufacturer says its ok you might destroy a 2 x C123a flashlight. Problem is the manufacturer doesnt say anything on...
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    Suggestions... 1 x 18650 or 2 x c123 versatility

    my friend has a flashlight (one of those chinese generics). It runs off 2 C123a's. Now rechargeable CR123a's operate at higher voltage then primary cell C123a's so unless the manufacturer says its ok you might destroy a 2 x C123a flashlight. Problem is the manufacturer doesnt say anything on...
  10. V

    a flashaholic 3yr old

    my 3 nieces (all below 8 years old) tend to destroy or lose their stuff, specially the youngest. They only get to hold cheap chinese LED flashlights until they are older, and their flashaholic mom keeps the flashlights for them so they dont lose them. They dont use it as a toy, they only use it...
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    Looking for the cheapest single AA or AAA that is still high quality

    There are many cheap chinese brands on dealextreme and similar websites. Some are even "generic", as in they have no brand name and just all themselves Cree lights based on the brand of the emitter. For lights below $14 or so, dont expect them to be high quality or waterproof. Most often its the...
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    MagLite 2AA LED Rebel Disassembly?

    Thank you very much for the information on how to disassemble the AA led maglite. My mom's maglite got broken after falling off a table and I was able to fix it. I posted pictures in my blog post http://magos-biologis.blogspot.com/2011/08/second-generation-led-maglite-repair.html
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    Help choosing between Ultrafire or Tank007

    I bought a TANK007 TK-568 led flashlight. Its supposed to have 3 modes but this one only has one. http://magos-biologis.blogspot.com/2009/12/tank007-tk-568-led-flashlight.html otherwise its ok the tank website http://tank007.com/view_products.asp?id=342 says theres a momentary on/off...
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    Interesting tidbit related to medical/surgical headlamps

    These are 2 entries from my blog about surgical grade headlamps. http://magos-biologis.blogspot.com/2010/01/surgical-grade-headlamp-versus-ordinary.html http://magos-biologis.blogspot.com/2010/01/cree-headlamp-vs-led-lenser-h7-for.html Believe it or not, as seen in the second link, the cheap...
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    Sanyo Harmolattice Low Capacity NiMH AA Cell - A Comparative Abrams Tank?

    these are for some reason 50% more expensive in the philippines ~650 pesos for 4 eneloop AA's versus ~ 450 pesos for 2 of these
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