Niftymitter v0.24

thingiverse

The open-source Niftymitter, designed by Tetsuo Kogawa, is a compact FM transmitter housed within a 1mm card body (shirt card) that supports hacking options. Ideal for small-scale radio broadcasts, distributed PA systems at performances, linking personal audio players to car radios, or experimentation purposes, this tiny device has been updated to version 0.24. Key improvements in v0.24 include full assembly instructions on Instructables, added artwork/info on housing design, and resolution of the stereo/mono plug conflict. However, known issues involve a sliding circuit box when switching or plugging and difficulty accessing the PP3 power lead's battery tray. The project can be found at openthing.org/products/niftymitter. For PCB layout (v0.24), refer to the .png file available on the Niftymitter Google Code downloads list, designed for etching onto copperplate using iron-on acetate or laser engraving methods described in the provided Instructables links. The circuit assembly diagram for an etched PCB is also available as a .png file. Additionally, there's an SVG file containing the PCB layout and assembly draft (v0.24) on Niftymitter's Google Code page. Electronic schematics, parts, and assembly instructions can be found on Tetsuo Kogawa's site, along with general electronics support information. A complete parts list is available as an Excel file. Housing layouts (v0.24) in .svg format are designed for laser cutting/engraving or hand-cutting and scoring of 1mm cardboard, which can be assembled by folding and gluing with quick-drying adhesives like UHU. Assembly instructions for the Niftymitter v0.24 are available on Instructables in multiple tutorials. To operate the device, refer to the How-to-Operate-Niftymitter-024 Instructable.