The Texas Instruments TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable 4096-step grayscale PWM brightness control and a 64-step, constant-current sink (no LED resistors needed!). Although this chip was meant for LEDs, you can use it to drive motors as long as the motor doesn't use more than 120mA.

Cart: Computer software for making cartograms

This page contains computer software and documentation for creating density-equalizing maps or "cartograms" using the technique described in the recent paper Diffusion-based method for producing density equalizing maps, Michael T. Gastner and M. E. J. Newman, Proc. Natl. Acad. Sci. USA 101, 7499-7504 (2004).

How to get started adding solar power to your small electronics projects. Use the sun to power small solar and battery powered night lights, garden lights, and decorations for halloween.

DS brut is an open source hardware prototyping platform for the Nintendo DS, developed by and for electronics enthusiasts, artists and game developers. By connecting the Nintendo DS to the outer world with UART, GPIO, PWM, ADC, I²C, etc, the game console can be easily hooked up to a variety of sensors (e.g. GPS receivers) and can itself control all different kinds of actuators, servo motors and others.

homebrew music applications for the Nintendo DS