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Cheap Power Supply From Available Components

Step 4Snip it and seal it up

Snip it and seal it up
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Use a pair of wire cutters to cut out the veroboard. If you line them up with a row of dots it works best, and sometimes you can get a perfect square with only two cuts. Now use the hot glue to coat the bottom of the board.

You can leave it out if you like, but I like things in cases. I also don't like contacts capable of delivering 12v just lying on my desk, so I modded a case for mine. Now, being a diabetic, I use insulin pump sites, and mine come in these small plastic cases that were otherwise worthless... until now.

For those of you who have diabetes and use Insets, you can remove the white plastic inserter from it's package by grabbing the part that's connected to the case and ripping it out (be sure to bend the needle back first so you don't stab yourself). After you do that you need something to close up the bottom. I took the plastic from a package for one of those Ascensia disks, cut that out, and hot glued it to the bottom. It's pretty sweet.

I was planning on using an Altoids tin, but the switch didn't really fit, and I made the hole too big for it, so I decided to abandon that plan, and I'm glad I did because my new case works so much better... and I have so many more of them. (Non-diabetics: I go through one of these every 2-3 days, because I have to change my site that often. Therefore I have a lot of them.)

You'll also need to solder the wires for the switch and LED, and solder them to the circuit. You did leave the ground disconnected from your 7805 and your second terminal, right?
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Author:worldgnat