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Want to combine iPhone, iPad, and iPod touch sensors with external electronic gadgets? This hands-on book helps you build several projects, using these built-in magnetic, light, and proximity sensors with inexpensive boards such as Arduino and a Bluetooth Low Energy Shield. And you ll tackle these projects by writing programs in techBASIC, an Apple-approved development environment that runs directly on these iOS devices. That s right. You ll quickly learn how to build metal detector, moisture sensing meter, and a rocket-bound iPhone without using Objective-C and Cocoa to access Apple s sensors and without having to enroll in Apple s iOS developer program. With just a few lines of BASIC code, you can write your apps directly on your mobile device for rapid development and prototyping - and watch your project take shape! This book is ideal for hobbyists, students, professional engineers, industrial designers, and inventors.