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Going Gear
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    Help me build a light

    If you are in anything more than a pup tent, you will need a MINIMUM of 50 ~ 100mA for a usable flood. I've been designing high efficiency lights for third world countries and I have a collection of my circuits here: http://quantsuff.com the sections on the camping lights should interest you.
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    Building single cell 5mm led light

    Thanks. Yes, the coil uses the steel jacket of the battery as a inductance multiplier. qs
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    Building single cell 5mm led light

    Check my site: http://www.quantsuff.com I started with the Joule Thief type circuits and wnet on...
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    Modding solar garden lights.

    Did you check this out? http://www.instructables.com/id/Adding_Oomph_to_the_Garden_Solar_Light/
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    running 3 emitters from 14.5v NiCad?

    The key to remember is that although general precautions apply - each modding case is unique, and you can tailor your design to just your needs... Start by doing some actual real-life measurements: Use a mulitmeter and find out what exactly your battery-pack outputs are (charged and 'tired')...
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    LED Electronics site

    For those interested in experimenting with basic LED circuits, I have just updated my website with some more simple designs. NEW! Check out the Fantastic Faux Fluorescent!
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    More Canadian light discoveries

    If this has a 9v wall-wart charger - it's the same one I bought my gf. I tested the open ckt output and it's over 16v! Sure to cook the SLA if left plugged in by accident. I added this circuit on the DC cord and now she can leave it charging without worrying about dead batteries.
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    USB Powered Li 123 cell charger.

    It's not complicated, but since the drain on the USB port is limited to 250mA, it would be a slow, slow charger. You can make your own by wiring 2 diodes in series to drop the 5v off the USB port: 5V - (1 power diode + 1 schottky) = 4.1v for "3.7v" Li-ion 5V - (2 power diodes) = 3.8v for...
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    Milliohm resistors for car dome light?

    I agree that 3 luxes would be overkill for a dome light. I use 8 20mA (40cd)LEDs in 2 chains of 4 and they are perfectly fine for reading by. With 14v available while the car is in motion, it is MUCH more advisable to hook 3 Lux's in series and keep the original circuitry. Then all the Lux's...
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    Easy *DIY* Led driver board

    I think in all fairness you should mention that your regulator circuit is a simple LDO which dissipates (wastes) 1/4 of the battery's power during the first 40 minutes of usefulness while the ZSX circuit is designed for BOOST operation for 2 or 3 cell operation so over-voltage protection is NOT...
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    Where to get the brightest mini CCFL?

    The driver has connetors for 2 4-inch tubes and will drive both.
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    Where to get the brightest mini CCFL?

    The "U" shape would require something like 250v more to fire. Why not 2 4-inchers?
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    Where to get the brightest mini CCFL?

    You can get a whole range of CCFL and EL components here. Do a search for "CCFT". I got a 12" replacement for my scanner here and it's brighter than the original.
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    Where to get the glowpowder, tape, goop, etc for "Glow-Mods"....?

    I agree - mixing with nail polish is a waste of good powder. But I actually DID grind the Glow powder, with a mortar - it was the only way to distribute them evenly on the surface 3mm LEDs for a Ring light I made. Seems to work OK...
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    Where to get the glowpowder, tape, goop, etc for "Glow-Mods"....?

    I've used his green glow up to 1:4 by volume in epoxy and acrylic (like here). It's just allergic to alcohol, water and heat. For small areas, you may want to grind it a bit finer, paint the area with clear nail-polish, sprinkle the powder over it, dry and cover with another layer or 2 of...
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