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| /* | |
| Analog Input | |
| Demonstrates analog input by reading an analog sensor on analog pin 0 and | |
| turning on and off a light emitting diode(LED) connected to digital pin 13. | |
| The amount of time the LED will be on and off depends on | |
| the value obtained by analogRead(). | |
| The circuit: | |
| * Potentiometer attached to analog input 0 | |
| * center pin of the potentiometer to the analog pin |