This is just another crazy electronics project I set myself to.
It all started while I was zombie-surfing the DealExtreme site. If you’re not familiar with the concept, it means browsing after 1am, no good reason other then to eke a couple of more minutes of browsing before the brain shuts down completely. Instead of muttering “brrraaaaains!” you mutter “beeedd”. Some of my best (and worst) ideas hit me during zombie surfing. But I digress.
So, as I said, while zs-ing DealExtreme, I came a cross a too-stupid-not-to-buy item: a pig LED flashlight for $0.78. And free shipping to boot! What’s the catch here, I wondered? And what the hell will I do with this useless, clearly non-kosher flashlight?
|Here piggy piggy!|
So I browsed further, and for $2.93 I got a bag full of ultraviolet LEDs.
|Not the best UV LEDs out there - but the cheapest|
It took less than 5 minutes to take the pig apart (please don’t ever associate this sentence with me ) and replace the 2 simple LEDs with the UV ones. And that’s when the fun starts.
Other than enabling me to see hidden marks on a $20 bills and a driver’s license, the most useful thing you can do with UV light is protect your stuff.
Do you have a favorite chair that you think gets replaced with a crappy one when you leave your desk? Did someone swipe your beloved Swingline stapler and you can’t prove it? Just mark your stuff with UV ink – completely invisible to the naked eye – but not to good ol’ Mr. UVP. Observe:
This is a simple metal mint box, easily swiped and easy to deny. But when you turn UVP on it, the truth comes to light, in 3 colors (you can also see the UV pens in the photo):
So, yes, not really practical unless you can retrieve the stolen goods, but quite good at identifying your stuff, or secretly communicating under the nose of pig-less people (think about passing notes in a boring meeting).
- Usefulness: 3/5 stars – not that amazing, and not too techy. Not a single line of code needed
- Fun factor: 5/5. Oh yeah!
- How easy it is to build: very. Just get your pig, LEDs (you need at least 2) and follow your instincts. Or watch this youtube video where someone demonstrates how to take it apart
- Total project cost: $3.71 – and I still have about 18 LEDs waiting for the next 9 pigs
Warning: DO NOT STARE DIRECTLY INTO UV LIGHT.
Your eyes cannot see it well, hence your pupils will not shrink properly to protect them. Few minutes are OK, more is not recommended.