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Pretty, William

William (Bill) Pretty began his career with a telecom company. He pursued a career in aviation and then joined the Ontario Center for Microelectronics. Bill left there for a 30-year career in the military as a civilian contractor. He was a guest presenter at the Western Canada Technical Conference. He started his own company in 2010, providing support in the form of R&D, to law enforcement and private security agencies.
Building a High-Tech Alarm System with Raspberry Pi</a>

Building a High-Tech Alarm System with Raspberry Pi

This book discusses the basic components of any alarm system.All alarm systems have two basic functions. First, they monitor their environment looking for a change such as a door or window opening or someone moving about in the room. Second, they alert the legal owner or user to this change.