Keyestudio Basic starter kit, Manual, Page: 15 / 109

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13
val=analogRead(potpin);// read the analog value from the sensor and assign it to val
Serial.println(val);// display value of val
analogWrite(ledpin,val/4);// turn on LED and set up brightness
（
maximum output of PWM is 255
）
delay(10);// wait for 0.01 second
}
//////////////////////////////////////////////////////////
Result
After downloading the program, when we rotate the potentiometer knob, we can see changes of the
displaying value, also obvious change of the LED brightness on the breadboard.