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- /*
- Analog input, analog output, serial output
- Reads an analog input pin, maps the result to a range from 0 to 255 and uses
- the result to set the pulse width modulation (PWM) of an output pin.
- Also prints the results to the Serial Monitor.
- The circuit:
- - potentiometer connected to analog pin 0.
- Center pin of the potentiometer goes to the analog pin.
- side pins of the potentiometer go to +5V and ground
- - LED connected from digital pin 9 to ground
- created 29 Dec. 2008
- modified 9 Apr 2012
- by Tom Igoe
- This example code is in the public domain.
- http://www.arduino.cc/en/Tutorial/AnalogInOutSerial
- */
- // These constants won't change. They're used to give names to the pins used:
- const int analogInPin = A0; // Analog input pin that the potentiometer is attached to
- int sensorValue = 0; // value read from the pot
- void setup() {
- // initialize serial communications at 9600 bps:
- Serial.begin(9600);
- }
- void loop() {
- // read the analog in value:
- sensorValue = analogRead(analogInPin);
- // print the results to the Serial Monitor:
- Serial.print(sensorValue);
- // wait 2 milliseconds before the next loop for the analog-to-digital
- // converter to settle after the last reading:
- delay(2);
- }
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