printerpowerd is a little Python script designed for users of older printers who want to save power when not using their printer, without manually turning it on and off. It runs, checking the printer queue directory every five seconds, turns it on when it sees a job, and turns it off after a configurable amount of idle time.
DirectFB is a thin library that provides developers with hardware graphics acceleration, input device handling and abstraction, an integrated windowing system with support for translucent windows and multiple display layers on top of the Linux framebuffer device. It is a complete hardware abstraction layer with software fallbacks for every graphics operation that is not supported by the underlying hardware.
Device::ParallelPort is a Perl API that allows low level access to the parallel port of most computers. It does this by using a number of drivers, which can be customized and added to, including Linux (direct and parport), Win32, Script, Dummy, and more. It also contains a number of direct access devices including an example printer and a relay controller card.
Hampton Bay RF Fan Control Software includes schematics for simple circuits to connect a Hampton Bay RF remote control to a Weeder digital I/O and Analog input board, a daemon to control and monitor one or more ceiling fans using these Weeder boards, and a Misterhouse module to interface with the fan_control_daemon.
Slink-e tools is a package of programs and libraries to drive the Slink-e infrared remote control via its serial port from a Linux system. It features an interactive program to talk to the Slink-e and exercise its functions, an editor and learner for the IR code database, a readline-based command interface, a daemon that controls a Slink-e so that multiple other programs can interact with it, and Perl libraries for talking to the Slink-e at various levels. The package also contains complete documentation of the Slink-e device itself.