Keyestudio ARDUINO maker learning kit Manual page 55

keyestudio
void loop()
{
digitalWrite(ledpin,HIGH);// turn on the LED on pin 13
delay(50);// wait for 0.05 second
digitalWrite(ledpin,LOW);// turn off the LED on pin 13
delay(50);// wait for 0.05 second
val=analogRead(potpin);// read the analog value of analog pin 0, and assign it to val
Serial.println(val);// display val's value
}
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Result
The sample program uses the built-in LED connected to pin 13. Each time the device reads a value,
the LED blinks.
Below is the analog value it reads.
When you rotate the potentiometer knob, you can see the displayed value changes. The reading of
analog value is a very common function since most sensors output analog value. After calculation,
we can have the corresponding value we need.
The experiment is now completed, thank you.
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