How to put together an eerily glowing neo-retropostmodern ultraviolet indicator lamp.

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: https://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

Aside from the etching materials (which are listed in the separate Instructable noted) you will only need:

  • 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
That was short. I like the simplicity. Great job
Thanks! And yeah, I believe the whole process, excluding etching, took me about 30 min.
how long to etch?
The first board only took maybe 30 minutes. However, The etchant seemed to dilute quickly and each additional etch took much longer. The last board I etched took more than 12 hours. The longer the etch, the more the toner seemed to suffer. I may attribute some of this to the temperature of my basement, though. I need to try some temperature-controlled tests. I may also attribute some of this to my using 2-oz double-sided blanks, so I need to get some 1/2-ox stock.
I prefer to use sponge method of etching. Dip soft sponge into etchant and rub board. This process is very fast. Nice job though.
Years later ... I finally started playing with the sponge method earlier this year. You are quite correct! I also started using the stronger Hydrogen Peroxide that I can get from a beauty supply chain, too. Etching takes under 60 seconds in most cases now and uses about a shot glass of etchant!
Great Job! 4 years and still a very cool project. Well done!! Have you thought of using a caged ball instead of your roller switch? Looks great now just thought it might add even a little more "punk". Great Job!!!!!!
Thanks for the kind words! I ended up replacing the limit switch with a mercury switch from an old thermostat.
Very cool I want one!!&nbsp; Thanks for all the info also!!<br />
Way cool! I'm going to make a "call sign" sign for my ham shack... 73, Rusty KC5QNK
This is a very cool project. I think I may attempt it. I must say though this is instructable is really not detailed enough for a complete electronics newb like myself. Actually it wasn't until I saw Randomskk's project that I realized this is not a big lamp and its actually very small lol. Randomskk's has a little more to it as far as some of the details. I dont know. I just found it a little easier to follow. I really appreciate both of you for doing this so I wont be as lost. Thanks and keep up the good work.
I used this idea to make a simple mother's day gift.<br/>I had the PCB on the back run off an ATtiny13, a coin cell and a push button that turns it on, causing it to fade the LEDs in and then out again.<br/>I couldn't get my hands on any acrylic, so instead I just used three 3mm LEDs - they light up the PCB in front (FR2) quite nicely.<br/><br/>I made a quick build log of it:<br/><a rel="nofollow" href="http://negativeacknowledge.com/2008/03/02/mothers-day-08-a-light-up-box/">http://negativeacknowledge.com/2008/03/02/mothers-day-08-a-light-up-box/</a><br/>
Way to take credit on your blog...At least credit him for it dude.
Sorry, my bad. I've updated the blog with a link here.
I've been wanting to make a lamp like, this, but wasn't really certain how best to go about it. This is quite helpful, and you did a really good job. My only worry is that you've got UV LEDs pointed out the sides of the lamp, and UV radiation is bad for skin and even worse for eyes, so it might be best try to find a way to put edges on any with UV LEDs. Awesome tutorial, though.
This looks amazing, but I'm having a really hard time finding some of the materials (the fluorescent acrylic and the etching board). Can you give some more specific details and maybe some links to where I might get them. I don't mind paying more than you did. (I know I'll have to) Oh, and if you have any links to more basic tutorials or instructables on etching, printed circuit boards and circuits I would greatly appreciate it. I'm getting really interested in these subjects, but it's hard to find more basic stuff about them. Anyway, thanks for any help you can provide.
Thanks for the kind words!<br/><br/>You can get the acrylic from McMaster if you don't feel like digging - I've never bought it from there, but I do know they carry it. I see alot at thrift stores an you can find clipboards to cut up at Wal-Mart, Target, OfficeMax, and the like.<br/><br/>Someone else had sent me a msg asking about getting started with etching so I looked around for some web pages that I thought would be useful:<br/><br/>Here's what I found:<br/><br/><a rel="nofollow" href="http://www.headwize.com/projects/garbz2_prj.php">http://www.headwize.com/projects/garbz2_prj.php</a><br/><br/><a rel="nofollow" href="http://myweb.cableone.net/wheedal/pcb.htm">http://myweb.cableone.net/wheedal/pcb.htm</a> * I had never read this one before - it's a little more technical way of doing the printout, but I think it may be a better way.<br/><br/><a rel="nofollow" href="http://www.solarbotics.net/library/techniques/buildpcb_trnsfr.html">http://www.solarbotics.net/library/techniques/buildpcb_trnsfr.html</a><br/>
Thanks a lot, they even ship internationally! The guides will be very helpful too.
Beautiful and creative! +1
Hi dad.
Double-Plus-Good! Very nice with great execution.
Short, but cool. I like the title too. Nice job.

About This Instructable




Bio: The pre-neopostmodern electro-Amish man using sense and caution when voiding any warranty.
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