Wiring Diagram. Please prepare wiring according to the following picture. There are three pins for IR Sensor, Starting from the right side, pin 1 is VCC which needs to connect with VCC. Pin 2 is a GND that connects to the GND of Arduino. Pin 3 is the OUT wire to Arduino pin 2: Wiring Diagram.. Read Digital Data from IR Sensor using Arduino. After connecting the sensor with Arduino, now time to write a few lines of code to read digital data from the sensor. First of all, we need to define the Arduino Digital Pin which is connected to the sensor and takes a variable for named that pin. Here the variable's name is "IRSensor".

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Power the IR with 5V or 3.3V and connect ground to ground. Then connect the output to a digital pin D9. We have just used a Male to Female Jumper wire to connect the IR sensor module with Arduino board as shown below. With that, you're now ready to upload some code and get the IR Motion Sensor working. You can also check out the above module.. The SHARP GP2Y0A21YK0F is an easy to use IR distance sensor with a range of 10 - 80 cm. It is a great sensor to use for autonomous robots or non-contact optical switches. In this tutorial, you will learn how the sensor works and how to use it with Arduino. I have included a wiring diagram and example code so you can start experimenting with.