Niftymitter is an open source short range FM transmitter based on the open source hardware design by Tetsuo Kogawa.Version 0.24 is designed to be housed within a ~1mm card body (shirt card), with a variety of options for hacking. The transmitter is tiny and handy for small scale radio broadcasts, building a distributed PA system for performances, linking your personal audio player to your car radio, or for general audio experimentation.The new version solves many of the problems in v0.22/0.23:KNOWN ISSUES IN v0.24:The project's home is at openthing.org/products/niftymitterPCB Layout v0.24 [.png - http://code.google.com/p/niftymitter/downloads/list]The PCB source is designed for etching onto copperplate, using iron on acetate (such as that described here - http://www.instructables.com/id/Mostly-easy-PCB-manufacture/) or using Michael Shorter's laser engraving method described here - http://www.instructables.com/id/Printed-Circuit-Boards-PCB-using-the-Laser-Cutte [instructables].Circuit assembly diagram for etched PCB [.png - http://code.google.com/p/niftymitter/downloads/list]PCB layout and circuit assembly draft document [.svg - http://niftymitter.googlecode.com/files/niftymitter%20PCB%20and%20assembly%20DRAFT%20v0.24.svg]Basic Electronic Schematics, parts and assembly instructions [Tetsuo Kogawa's site - http://anarchy.translocal.jp/radio/micro/simplestTX01.jpg]General support for the electronics is on Kogawa's site here - http://anarchy.translocal.jp/radio/micro/howtosolder/howtosolder.html. Tetsuo Kogawa's site contains all the information needed to source components and assemble the electronics using his particular copperplate method.Complete Parts List [.xls - http://niftymitter.googlecode.com/files/niftymitter%20v0.24%20parts%20list.xls]Housing layouts v0.24 [.svg - http://niftymitter.googlecode.com/files/niftymitter%200.24%20housing%20layouts.svg]The layouts are designed to be laser cut and engraved, or cut and scored by hand. They are designed for ~1mm cardboard and can be assembled by folding and gluing with a quick drying adhesive such as UHU.Assembly Instructions [instructables]Assembling the Niftymitter 0.24 board - http://www.instructables.com/id/Assembling-a-Niftymitter-board-a-short-range-FM-/ Assembling a Niftymitter 0.24 - http://www.instructables.com/id/Assembling-a-Niftymitter-v024/ How to Operate Niftymitter 0.24 - http://www.instructables.com/id/How-to-Operate-Niftymitter-024/