This document provides an overview of hardware hacking and various hardware platforms that can be used for hacking purposes. It discusses the Raspberry Pi and its specifications, the Arduino and shields that can be used with it. The Bus Pirate is introduced as a universal bus interface to eliminate prototyping effort. Other platforms mentioned include MK series mini PCs, FPGAs, bladeRF, HackRF, and USRP for wireless capabilities. The document envisions possibilities of hacking wireless communications and even building small DIY robots for surveillance using these open hardware platforms.