Scanners for loose papers have become so commonplace that almost every printer includes one, but book scanners have remained frustratingly rare for non-librarians and archivists. [Brad Mattson] ...

Oscilloscope using Arduino and Processing Description Sampling oscilloscope with 4 channels (voltages from 0 to 5V), with frequencies up to 3kHz. It has a PWM signal generator and a square wave output ...

Here is a design for a full-featured motor shield that will be able to power many simple to medium-complexity projects. 2 connections for 5V 'hobby' servos connected to the Arduino's high-resolution ...