Dorcy 1xAAA UV mod?

[GarageBoy]

Will the driver cicuit drive an UV LED properly? Which side of the board is positive? Also, what's the best way to remove the head? Finally, what UV LED should I use? (for general flourescing of Credit Cards etc)

 

[IsaacHayes]

Yup. Same voltage requirements as white/blue/green/uv highpower leds. The board has a + marked on one side, or look at how the led is mounted (I belive the lead to the large cup is neg). I just twisted my head off with my hands. I think others have said that theirs have had locktite on them, then use a strap wrench. UV led, well the lower the wavelength, the better. You'll have less visable purple light, but more of the UV that makes stuff glow good. 400-395nm is the standard UV offered, but you can get 385,370nm leds but those costs a lot more, but are really cool.

Keep in mind UV leds don't last as long as normal ones, and the dorcy overdrives the white led in there anyways, but you'll be using this to inspect things, not light up your tent all night so no real worries there.

 

[GarageBoy]

Thanks, I'll be getting a few

 

[GarageBoy]

Where do I get the shorter wavelength ones? I only found 400nm

 

[gadget_lover]

When I did mine last year I added a small resistor to limit the current to the LED. The resistor was in series with the LED. Not elegant, but it worked well.

I don't remember the value used, nor the current level it's using, but it does work very well.

Daniel

(P.S.) You might want to mark it somehow so you don't grab that one by mistake.

 

[3rd_shift]

www.lsdiodes.com may hold the answer.

Let us know how that UV conversion works out.

 

[markdi]

there is a seller on ebay who sells a 3 aa 7 led 380nm light for about 26 bucks shipped.

this seller also has a single 380nm photon clone for around 5 bucks - you could take the photon clone apart for the led.

 

[xpitxbullx]

375nm NightCutter 5CSI coming in the mail tomorrow! YEAAHHH!!

 

[GarageBoy]

When I grab the light, I'll let you know. Does 400nm work ok?

 

[markdi]

yes 400nm works but with a lot more visible light contamination

 

[Weylan]

Ok. I did this conversion. It was really easy. I want everyone to know it works. The UV LED that I used in the 1x AAA Dorcy work and lights up some things.

What I want is the Dorcy to light up a bit more. So I am thinking that I need to use a lower nm UV led. So my question is where do you get cheaper UV LEDs? The UV led I got was I think only 5000mcd and not really the right wavelength. I would like an UV LED with a bit more power and a bit lower NM, but still be in the range of $2.00 for the LED. Any one help me out here? This is a great upgrade to the Dorcy and really easy.

My use is to make money glow and energize glow in the dark toys for the baby. I was using it on the glow on the dark paint that works well, but not as bright as I would like. Just a bit more would be better.

Can someone help find a cheap place to help get some of the variety of good UV LEDs in the $2.00 range? OR am I going to be stuck paying $7 after shipping for these things!

 

[nemul]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7508715991
3 Nichia UV (Ultra-Violet) LEDs (at 375nm)

 

[GarageBoy]

thanks! will 375nm set off credit cards, etc?

 

[IsaacHayes]

I modified a Xnova 1AA 5led flashlight to 395nm UV leds and it will make a credit card show the UV text.. So 375 will yes.

 

[CEJ]

This is what u see on the VISA card under 8x 385nm LEDs, u can see the "UV bird" very well, whereas 400nm LEDs will have more visible violet light "pollution"...

 

[greenlight]

Eye see!

 

[GarageBoy]

that's the effect i want. what uv led will allow me to spot urine stains, credit cards, cash, etc?

 

[nemul]

the shorter the UV wavelength the better...

 

[attowatt]

Purchased a few of the uv and near uv (purple) keychain lights from photon light.com

http://www.photonlight.com/products/ultraviolet_photon.html

I like both of them, as I can easily fluoresce using the UV led (370nm) from 20 feet at night and still fluoresce from 6 inches in daylight.

The near uv purple (according to manual) is closer to 405 nm and is a little harder to fluoresce, as the second picture does no justice, BUT I can still navigate at night around the house.

I am not trying to sell you on "photonlights", more so just a comparison of uv vs. purple

Oh yeah I have used the uv light for checking around toilet and urine stains light up brightly.

photon freedom micro Ultraviolet at 370nm.

photon freedom micro Purple at 405nm

 

[CEJ]

[ QUOTE ]
GarageBoy said:
that's the effect i want. what uv led will allow me to spot urine stains, credit cards, cash, etc?

[/ QUOTE ]

spotting pet's urine/stains with 385nm LED light
U can see 2 diff "color tone", the brighter 1 is the "fresher" one (still wet /ubbthreads/images/graemlins/icon15.gif)

But I am not sure how bad is to look directly at the UV light below 390nm /ubbthreads/images/graemlins/icon3.gif