Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name

analogRead()

Examples
int inpin = 0;
int val = 0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  val = analogRead(inpin);  // read the value of analog pin 0
  Serial.print(val / 4);    // write the scaled value to the serial port
}
Description The analogRead() method reads the value of an analog input pin. Possible values range from 0 to 1024, where 0 is 0 volts and 1024 is 5 volts.
Syntax
analogRead(pin)
Parameters
pin int
Returns int
Usage Application
Related analogWrite()
Updated on November 01, 2009 11:30:51pm PST

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