REMIX - Single-Sided Joule-Thief

This isn't the first Joule-Thief here on instructables. But this one has one big advantage, it has a one-sided board. It is very hard to align two layers when you make a board yourself. So if you have access to a CNC-Milling-Machine, or have everything set up to etch one yourself, this one is for you!

This board is based on the The simple Joule Thief by xBacon.

The modifications have been made by the great members of the Attraktor Hacker/Maker-Space in Hamburg and was part of our LED-Build-Night.

• 1x 470uH inductor (looks like a fat resistor)
• 1x 2.2K resistor
• 2x 1K resistor
• 2x basic NPN transistor (2N3904, 2N2222, 2N4401, etc.)
• 1x 1000pf (same thing as 1nf or 0.001uf) ceramic capacitor
• 1x 1,5 volt battery + holder
• 1x LED (or more)

Except for the inductor, these parts should be easy to find.

If you want to etch the board yourself you can use the black and white image above.

The milling-machine will have to carve away a lot less material if you just separate the electrical parts. The G-Code I used is in the archive above.

Off you go and let the CNC Milling-Machine do it's work and enjoy the simple beauty of the result.

I've annotated the parts in the screenshot above.
Once your done it should look like the photo above.

Insert an old battery and enjoy the show. :)