UV Led flashlight

thingiverse

A buddy of mine asked me for a UV light source to examine currency, so I whipped up a quick UV emitter using two coin cell batteries and a 5mm UV LED holder. It's an ultra basic setup - no switch, each leg simply touching both sides of the cells, and it works just fine with some pliers handy. I secured the cap with Bondic in place using a few drops as a non permanent adhesive - I'm really hooked on this stuff by the way, it's fantastic.