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DIY Arduino Boards for IO using port expanders and I2C
DIY Arduino Boards PCF8674 MCP23017 74HC595 CD4021
I2C
Parallel IO
Piezo buzzers
See the Files section for a wide range of sensors and sample code
Schematics
PCB Layout
Sample Code
GQGMC is a user level driver for interfacing a Linux host to GQ Electronic's GMC-300 geiger-muller counter. Written in C++, the driver provides an interface method for each of the capabilities of the GMC-300. A sample command line text only program and sample Qt based GUI program are provided.
EVILib is a C++ library for controlling the serial interface with Sony color video cameras EVI-D30(31), EVI-D70(P) and EVI-D100(P). The library's C++ source is released under LGPL license. Sampleprogram provided with the library.