Seeed Grove Beginner Kit - Page 32

Software Code
Open Arduino IDE.
Copy the following code, click Verify to check for syntax errors. Verify that there are no
errors, and you can upload the code.
// Light Switch
int sensorpin = A6; // Analog input pin that the sensor is attached to
int ledPin = 4; // LED port
int sensorValue = 0; // value read from the port
int outputValue = 0; // value output to the PWM (analog out)
void setup() {
pinMode(ledPin,OUTPUT);
Serial.begin(9600);
}
void loop() {
// read the analog in value:
sensorValue = analogRead(sensorpin);
// map it to the range of the analog out:
outputValue = map(sensorValue, 0, 1023, 0, 255);
Serial.println(sensorValue);
// change the analog out value:
analogWrite(ledPin, outputValue);
delay(30);
}
You can also see the light intensity readings from the Serial Monitor, navigate to Tools -> Serial
Monitor.
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Grove Beginner Kit For Arduino®