Sharp 2Y0A21 F 03

Sharp 2Y0A21 F 03

Distance Measuring Sensor Unit

Sharp 2Y0A21 F 03

This sensor can measure a distance from 10 to 80 cm with analog output. The range of output voltage is defined as a graph below.

Voltage output from 0.4 to 2.25 V (80 to 10 cm)

Sample Code:

void setup() {
  // put your setup code here, to run once:
  pinMode(A6, INPUT);
  pinMode(A7, INPUT);
  Serial.begin(115200);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println(analogRead(A6));
  delay(1);
  Serial.println(analogRead(A7));
  delay(1000);
}

Because the output of this sensor in analog output, So we can read data easily by using ADC. (analogRead() function in arduino) In this code, we read from 2 sharp sensors and print output to a serial port.

Reference: Datasheet