SEN0019 - DFRobot - Product.Network

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AdjustableInfraredSensorSwitch(SKU:SEN0019)

Contents

 1 Introduction

 2 Specification

 3 Tutorial

3.1 Connection Diagram

3.2 Sample Code

3.3 Result

 4 Trouble shooting

Introduction

The DFRobot Adjustable Infrared Sensor Switch is a set of transmitter and receiver in one of the

photoelectric switch sensor. The detection distance can be adjusted according to the demand. The

DFRobot Adjustable Infrared Sensor Switch is small, easy to use, inexpensive, easy to assemble

and can be widely used in robot to avoid obstacles, interactive media, industrial assembly line, and

many other occasions. The switching signal output differs in accordance to the obstacles. It remains

high when no obstacles and remains low when there are obstacles. There is also a red led on its

back to indicate the sensor status.

Specification

 Power supply: 5V

 Working Current: <100mA

 Adjustable detection range: 3cm - 80cm

 Pin description:

Red - 5V

Green - GND

Yellow - Digital output

 Digital output:

"0" - found barrier (~0V)

"1" - no barrier (~4V)

 Dimension: 45x18mm

Tutorial

ConnectionDiagram

SampleCode

const int InfraredSensorPin = 4;//Connect the signal pin to the digital pin 4

const int LedDisp = 13;

void setup()

{

Serial.begin(57600);

Serial.println("Start!");

pinMode(InfraredSensorPin,INPUT);

pinMode(LedDisp,OUTPUT);

digitalWrite(LedDisp,LOW);

}

void loop()

{

if(digitalRead(InfraredSensorPin) == LOW) digitalWrite(LedDisp,HIGH);

else digitalWrite(LedDisp,LOW);

Serial.print("Infrared Switch Status:");

Serial.println(digitalRead(InfraredSensorPin),BIN);

delay(50);

}

Result

Cover the sensor head with your hand, the LED(Pin13) on board will light up, hold it toward an open

area, the LED will be off. Open Arduino IDE serial monitor, you can also get the Infrared sensor

status.

Troubleshooting

Q 1. We have to use manual, because describes explanation is too simple?

A: This is a photoelectric switch, only three lines, power, ground and output, so have not too

complicated presentation.

Q 2. Why Connect the power, light has been lit?

A: To ensure stable power supply is 5V ± 2%, followed by the output of the probe is not connected to

the microcontroller output port.

Q 3. Why connect infrared switch power, light has been lit?

A: .Please

1. Check the power supply has not reversed, in a word, the infrared output to supply positive;

2. check the probe is in the direction of the detection range that is no obstacle, the best against the

open direction.

Q 4. If need the pull-up resistor, how much should be?

A: About 10K.

Any question and more cool ideas to share, please visit DFRobot Forum

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