You can make your own Niftymitter, and this page will help you find out how. Below are all the source files and instructions you will need to build the latest stable version of Niftymitter, suitable for the end user.
In short, Niftymitter v0.24 is constructed using PCB etching, soldering, laser cutting or simple cutout and stick-together techniques. This file includes all the information and instructions you need to build the latest version of Niftymitter.
The zip file contains the following:
Assembly Instructions [.pdf from instructables]
Complete Parts List [.xls]
Housing layouts v0.24 [.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.
PCB Layout v0.24 [.png]
Circuit assembly diagram for etched PCB [.png]
Electronic Circuit Schematics
Basic Electronic Schematics, parts and assembly instructions [Tetsuo Kogawa's site]
General support for the electronics is on Kogawa’s site here. Tetsuo Kogawa’s site contains all the information needed to source components and assemble the electronics using his particular copperplate method.
Previous releases are archived here.