Example Code for Arduino-Read Sensor Status

Hardware Preparation

• DFRduino UNO R3 x 1
• Digital Laser Proximity Sensor (1-400cm)

Software Preparation

• Arduino IDE

Wiring Diagram

Other Preparation Work

How to adjust detection distance

Keep the sensor powered on and in the normal operating status, and place a roughly 80x80cm of kraft paperboard (or other objects) in front of the sensor at 70cm. The distance adjustment steps are as shown in the diagram, enter the distance adjustment mode: hold on the adjustment button, when the red LED indicator flashes, enter the automatic distance adjustment mode; don't move the sensor and paperboard when the LED flashes, when the LED indicator stops flashing, the distance adjustment is done.

Sample Code

int  OUT = 4;
int  i = 0;
void setup()
{
  Serial.begin(9600);
  pinMode(OUT, INPUT);
}
void loop()
{
   i = digitalRead (OUT);
   Serial.println(i);
   delay(1000);
}

Result

Achieve function: read real-time status of IO4, when the sensor detects an object, serial prints 1; when no object is detected, serial prints 0.