Example Code for Arduino-Ambient Light Sensor Control with Gravity: I/O Expansion Shield DFR0375

This article offers a detailed guide on controlling ambient light sensors using Arduino, including hardware setup, software preparation, wiring diagrams, and sample code execution for effective sensor management and real-time LED control.

Hardware Preparation

UNO Dashboard x1
DFR0375 Expansion Shield x1
Analog Sensors (Ambient Light Sensor) x1
Jumper Cables

Software Preparation

Arduino IDE V1.6.5 click to download Arduino IDE

Diagram

Sample Code

int light=0;

void setup() {
  // put your setup code here, to run once:
  pinMode(3,OUTPUT);
  Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
  light=analogRead(0);
  Serial.println(light);
  if(light>100)
    digitalWrite(3,HIGH);
  else  digitalWrite(3,LOW);
  delay(100);
}

Result

When there is low ambient light, the LED will turn ON.