Raspberry Pi Hardware Projects 1 is the first in a series of 4 early release eBooks taken from Raspberry Pi Projects. Each ebook contains 3 projects, designed to be both fun and informative and which introduce the skills the reader needs to make the most of the Pi. There are two software-based project eBooks, and two hardware-based project eBooks. Raspberry Pi Hardware Projects 1 contains the following projects: Reaction timer Twittering toy Scaled-down disco lights It also contains a short tutorial on how to get up and running with the Pi. Together, the Raspberry Pi Projects early release eBooks are an excellent way to dig deeper into the capabilities of the Pi and to have great fun while doing it.