View source for SHARP IR Ranger Sensor GP2D12 for Arduino

==Introduction==
[[File:GP2D12 1.jpg]]

The Sharp GP2D12 is an analog distance sensor that uses infrared to detect an object between 10 cm and 80 cm away. The GP2D12 provides a non-linear voltage output in relation to the distance an object is from the sensor and interfaces easily using any analog to digital converter.

==Specification==
*Measuring range : 10 to 80 cm
*The maximum allowable Angle : > 40 °
*The power supply voltage : 4.5 to 5.5 V
*The average power consumption : 35 mA
*Peak power consumption : about 200 mA
*The frequency of updates/cycle : 25 Hz/40 ms
*Analog output noise : < 200 mV

==Document==
[http://www.geeetech.com/Documents/SHARP%20GPD2D12%20datasheet.PDF SHARP GPD2D12 datasheet]

==Pinout==
[[File:GP2D12 pin.jpg]]

==Usage==
Here is the guide illustrates how to connect an Arduino to the ADXL335 breakout board.

[[File:GP2D12 wiring.jpg|400px]]

==Example code==
 char GP2D12;
 char a,b;
 void setup()
 {
  Serial.begin(9600); //
 }
 void loop()
 {
  int val;
  GP2D12=read_gp2d12_range(0);
  a=GP2D12/10;
  b=GP2D12%10;
  val=a*10+b;
  if(val>10&&val<80)
  {
    Serial.print(a,DEC);//
    Serial.print(b,DEC);//
    Serial.println("cm");//
  }
  else Serial.println("over");//
  delay(50);
 }
 float read_gp2d12_range(byte pin)
 {
  int tmp;
  tmp = analogRead(pin);
  if (tmp < 3)return -1;
  return (6787.0 /((float)tmp - 3.0)) - 4.0;
 }


==How to buy==
Click here to buy [http://www.geeetech.com/sharp-ir-ranger-sensor-gp2d12-for-arduino-p-501.html SHARP IR Ranger Sensor GP2D12 ]