Hacked Gadgets Forum

April 21, 2009

DIY UV LED Double Sided PCB Exposure Box

at 12:37 pm. Filed under DIY Hacks, Electronic Hacks

 

When you are making DIY printed circuit boards, one of the popular methods requires UV exposure. Many systems use lamps that can give off lots of heat and be expensive to replace. Djhamer has provided plans to make a UV LED system that is double sided so that you can expose double sided PDBs without having to flip and repeat half way through the process.

"A UV exposure box is an extremely useful piece of kit. It can be used to make proper PCB’s. It can also be used to make other things such as intricate photo etched parts (a subject for another instructable). The trouble is they can be a little pricey for the hobby enthusiast especially if you want the double side type.
This instructable outlines the construction of a double sided UV exposure box using the recent generation of high brightness UV LEDs.

Why use LEDs?
LEDs are far more energy efficient than either incandescent or fluorescent lamps offering between 5-10 times more efficiency making them cheaper to run and kinder to the environment. They also (unlike fluorescent tubes) do not contain mercury. LEDs have a far greater life span than the other types of lamp measured in decades rather than months. The frequencies being emitted are also in a tighter band making UV LEDs safer than the traditional UV tubes. There’s also just something cool about LEDs, I can’t put my finger on it, but ever since I was a kid I’ve found them to be one of the more fascinating electronic components."

Via: Elektronika