SHARP_GP2D120X_IR_ranger_sensor_(4 30cm)_(SKU_SEN0143) - jimaobian/DFRobotWiki GitHub Wiki

Sharp GP2D120X

Specifications

  • Output：analog output
  • Detection Range ：4-30cm
  • Voltage：4.5～5.5V
  • Current：33mA
  • Size：40x20x13.5 mm

formulas

formulas

Connection Diagram

sen0143_connection

Sample Code

/******** start code ********/
/*
 *  created     2013-07-29
 *  by      lisper ([email protected])
 *  function    test gp2d120x
 *
 */

//connect gp2d120x to A1
#define pin A1

void setup () {
        Serial.begin (9600);
        pinMode (pin, INPUT);
}

void loop () {
        uint16_t value = analogRead (pin);
        double distance = get_gp2d120x (value);
        Serial.println (value);
        Serial.print (distance);
        Serial.println (" cm");
        Serial.println ();
        delay (500);
}

//return distance (cm)
double get_gp2d120x (uint16_t value) {
        if (value < 16)  value = 16;
        return 2076.0 / (value - 11.0);
}

/******** end code ********/