v4l-utils is a collection of various video4linux (V4L) and DVB utilities. libv4l is an accompanying collection of libraries that adds a thin abstraction layer on top of video4linux2 (V4L2) devices. The purpose of this layer is to make it easy for application writers to support a wide variety of devices without having to write separate code for different devices in the same class. It consists of 3 different libraries. libv4lconvert offers functions to convert from any (known) pixel format to V4l2_PIX_FMT_BGR24 or V4l2_PIX_FMT_YUV420. libv4l1 offers the (deprecated) v4l1 API on top of v4l2 devices, independent of the drivers for those devices supporting v4l1 compatibility (which many v4l2 drivers do not). libv4l2 offers the v4l2 API on top of v4l2 devices, while adding support for the application transparent libv4lconvert conversion where necessary.
The SAITEK X52 PRO Flight System is a USB-HID compatible joystick designed for flight simulation usage. The HID part of the joystick is fully supported on Linux 2.6.x. The device also contains a multi-function display (MFD) consisting of 3x16 alphanumeric lines, and several bi-color LED illuminated buttons that can be enabled individually. The MFD and the LEDs cannot be accessed using the default Linux joystick driver, but need special device commands. The aim of the x52 PRO MFD library is to encapsulate these commands and enable accessing the MFD and LED features under Linux.
CANpie defines a Standard API for access to the CAN (Controller Area Network) bus. The API provides functionality for ISO/OSI Layer 2 (Data Link Layer). The CANpie driver is the base for HLPs like CANopen, DeviceNet, J1939, etc. Through its low memory footprint, CANpie can be used for embedded applications (without any OS) as well as for Linux. Access to the Linux CAN driver is via a socket interface (AF_CAN).
libft is an implementation of the fischertechnik ROBO interface library for Unix-like systems. The goal is to create a library that is fully compatible with the ftlib by knobloch electronic. This library should work on any systems supported by libusb, like Linux, BSD, and Mac OS X. A basic Python module is available.
Push Puppet Toy is a computer-controlled puppet that stands to attention when a friend joins an IRC channel or comes online on IM, and collapses when he leaves. The concept is very similar to the Availabot (http://availabot.com/), but works under Linux. Schematics, firmware for the puppet, and plugins for Gaim and XChat to control the puppet are provided.
BlueSense SDK is a software development kit for communicating with BlueSense equipment. It allows you to read out sensors or control actuators. A user-space USB driver for all platforms is included. Examples for all modules are also included. For Java and Mono/C#, there is an object-oriented interface, and for C, there is a function based interface.