Arduino Tutorial #2 - Sketch structure, variables and procedures

In this Arduino tutorial we look at Sketch structure, variables and procedures.
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In this video I cover the following:

* What is Arduino?
* What is the sketch structure?
* What are variables and what types of variables - int, integer, float, floating point, byte, string array.
* The build of the voltage divider for the voltmeter can be found in the Ohms law tutorial:
* What is the Arduino (software) IDE (interactive development environment) arduino-1.0.1
* What is an Arduino library / libraries
* Arduino philosophy
* We take a look at the Arduno hardware.
* I discuss the project for the tutorial, a voltmeter with Min Max Ave.
* I talk about the Sparkfun serial enabled 16 x 2 LCD and the challenges it poses.
* I talk about the Sparkfun serial enabled 20 x 4 LCD.
* Arduino for beginners / dummies / newbies

Arduino Uno R3 features:

* ATmega328 micro controller
* Input voltage - 7-12V
* 14 Digital I/O Pins (6 PWM outputs)
* 6 Analogue Inputs
* 32k Flash Memory
* 16Mhz Clock Speed

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