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SNS-GP2Y0A21YK0F
GP2Y0A21YK0F
GP2Y0A21YK0F is IR distance sensor 10-80cm with analog output. The output / distance relations is like this:
have nice article about measuring distance with Arduino
the final code is:
int IRpin = 1; // analog pin for reading the IR sensor void setup() { Serial.begin(9600); // start the serial port } void loop() { float volts = analogRead(IRpin)*0.0048828125; // value from sensor * (5/1024) - if running 3.3.volts then change 5 to 3.3 float distance = 65*pow(volts, -1.10); // worked out from graph 65 = theretical distance / (1/Volts)S - luckylarry.co.uk Serial.println(distance); // print the distance delay(100); // arbitary wait time. }