This shows the construction of the first two that I made as a way to evaluate the PCB etching process outlined in another Instructable. My idea is to use these as indicator lamps in some other projects.
My son insisted that I enter it into the LED contest because he wants a TV-B-Gone kit, so be sure to vote it up if you like it. (Click the + icon at the top of this page)
You should open this pre-requisite Instructable in a new tab or window: http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/
It is the method used to do the etching in this instructable and has the added bonus of giving the PCB's a nice green tint.
Eventually I will make stained wood and brushed aluminum enclosures for these. I also plan to make use of these as indicators on some projects. (They are actually quite significantly brighter than they appear in the pictures)
Step 1: Gather materials
- Ultraviolet LED's - I got 200 for $10 on eBay. I think cool backlight effects could be made with any LED combination you like, my preference just happens to be UV.
- Fluorescent acrylic - McMaster carries this, as do alot of industrial supply houses. I got mine for $0.99 in the form of a tacky cutting board from a thrift store. Again, green is my preference, but the material comes in a couple of fluorescent colors. I think that maybe I'd like to try red, too.
- Standoffs - I used #8 threaded couplers
Step 2: Layout the top board
You can be pretty free laying out the top, just be sure to stay far enough back from the edges to clear your stand-offs and Remember to reverse your image for etching!