Arduino use a pot. A potentiometer <br /> <br />Displays the analogue value of a potentiometer using the serial port <br /> <br />To view serial port press Crtl+Shift+M <br /> <br />There are Linear taper potentiometer and Logarithmic type potentiometer . <br /> <br />For this circuit example a Linear type of is more recommended because this will return a smother Linear value over the turned range <br /> <br />About the Potentiometer on Wikipedia. <br /> <br />http://en.wikipedia.org/wiki/Potentiometer#Logarithmic_potentiometer <br /> <br />Demonstrates analogue input by reading an analogue sensor on analogue pin 0, (A1), and depends on the value obtained by analogRead() displays that analogue value using the serial port. <br /> <br /> The range of values returned by the analogRead() is 0 to 1023 <br /> <br /> A sketch like this may be used to control the angle of something e.g. in a servo <br /> <br /> To view serial port press Crtl+Shift+M <br /> <br /> The circuit: <br /> * Potentiometer attached to analogue input 0 (Means A0 input) <br /> * center pin of the potentiometer to the analogue pin <br /> * one side pin to ground the other side pin to +5V <br /> <br />No LED's are lit using this sketch but LED TX will flash to show that serial data is being sent when you the view serial port <br /> <br />To view serial port press Crtl+Shift+M <br /> <br /> This Sketch is based on the example code "Analog Input" is in the public domain. <br /> <br /> Created by David Cuartielles modified 30 Aug 2011 <br /> <br /> By Tom Igoe <br /> <br /> This example code is based on the public domain. <br /> <br /> A diagram of the circuit used may be seen here as well <br /> <br /> http://arduino.cc/en/Tutorial/AnalogInput <br /> <br />This example code is in the public domain. <br /> <br />Arduino Leonardo Compatible <br /> <br />This Indiegogo crowd funding campaign started on Jul 12 and closed on August 10, 2013 (11:59pm PT). <br /> <br />http://tinyurl.com/9-ARDUINO <br /> <br />https://vimeo.com/70197613 <br /> <br />https://www.indiegogo.com <br /> <br />http://www.borderlesselectronics.com <br /> <br />Arduino Leonardo Compatible Code:- <br /> <br />File : <br /> <br />use_a_pot.ino <br /> <br />http://1drv.ms/1A1rR1m
