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Datasheets

CAD Files

v2.0 files

All of these files are available under the Creative Commons 2.5 attribution license.

v1.0, v1.1 and v1.2 files

You can use these files with the DN2474 inductor, it's single-sided so it's easy to etch at home. You can generate Gerbers or extract a postscript image (for toner transfer) easily, using EagleCAD, freely available for Mac/Win/Linux.

Here are the final files, for the kit. They use a radial inductor and have pads for a low battery indicator SMT LED. It's doublesided but there's only one trace to jumper if you're not using the low battery indicator.

I then did a minor upgrade to add a pullup and pulldown for better performance:

All of these files are available under the Creative Commons 2.5 attribution license.

This guide was first published on Jun 11, 2013. It was last updated on Jun 11, 2013. This page (Download) was last updated on Oct 17, 2016.