Difference between revisions of "LDR Module"

From LinkSprite Playgound
Jump to: navigation, search
(Created page with "<syntaxhighlight lang="c"> /* Analog input, analog output, serial output Reads an analog input pin, and T000090 LDR Analog Sensor connected to I0, maps the result to a r...")
 
(Blanked the page)
Line 1: Line 1:
<syntaxhighlight lang="c">
 
  
 
/*
 
  Analog input, analog output, serial output
 
 
Reads an analog input pin, and T000090 LDR Analog Sensor connected to I0, maps the result to a range from 0 to 255
 
and uses the result to set the pulsewidth modulation (PWM) on a T010111 LED Module connected on O0.
 
Also prints the results to the serial monitor.
 
 
created 29 Dec. 2008
 
Modified 4 Sep 2010
 
by Tom Igoe
 
modified 7 dec 2010
 
by Davide Gomba
 
 
This example code is in the public domain.
 
 
*/
 
 
#define O0 11
 
#define O1 10
 
#define O2 9
 
#define O3 6
 
#define O4 5
 
#define O5 3
 
#define I0 A0
 
#define I1 A1
 
#define I2 A2
 
#define I3 A3
 
#define I4 A4
 
#define I5 A5
 
 
// These constants won't change.  They're used to give names
 
// to the pins used:
 
const int analogInPin = I0;  // Analog input pin that the LDR is attached to
 
const int analogOutPin= O0; // Analog output pin that the LED is attached to
 
 
int sensorValue = 0;        // value read from the pot
 
int outputValue = 0;        // value output to the PWM (analog out)
 
 
void setup() {
 
  // initialize serial communications at 9600 bps:
 
  Serial.begin(9600);
 
}
 
 
void loop() {
 
  // read the analog in value:
 
  sensorValue = analogRead(analogInPin);           
 
  // map it to the range of the analog out:
 
  outputValue = map(sensorValue, 0, 1023, 0, 255); 
 
  // change the analog out value:
 
  analogWrite(analogOutPin, outputValue);         
 
 
  // print the results to the serial monitor:
 
  Serial.print("sensor = " );                     
 
  Serial.print(sensorValue);     
 
  Serial.print("\t output = ");     
 
  Serial.println(outputValue); 
 
 
  // wait 10 milliseconds before the next loop
 
  // for the analog-to-digital converter to settle
 
  // after the last reading:
 
  delay(10);                   
 
}
 
 
</syntaxhighlight>
 

Revision as of 16:51, 22 November 2012