Using Grove Touch Sensor To Control Grove LED

// this demo will show you how to use Grove - touch sensor to control a LED
// when the touch sensor was  touched, the led will on 
// otherwise led off
// Grove - Touch sensor connect to D3
// Grove - LED connect to D7

const int pinTouch = 3;                        // pin of button define here
const int pinLed    = 7;                        // pin of led define here

void setup()
{
    pinMode(pinTouch, INPUT);                  // set button INPUT
    pinMode(pinLed, OUTPUT);                    // set led OUTPUT
}

void loop()
{
    if(digitalRead(pinTouch))                     // when button is pressed
    {
        digitalWrite(pinLed, HIGH);             // led on
    }
    else
    {
        digitalWrite(pinLed, LOW);
    }
    
    delay(10);
}