Tilt Switch Sensor Module (KY-020)

Tilt switch module and a digital interface, built-in 13 LED build a simple circuit to produce tilt warning lamp 13 comes with digital interfaces of the LED,    the tilt switch sensor interface to access digital 3,when the tilt open Off sensor senses a key signal, LED lights, otherwise off.    Routines source code:    int Led = 13 ;// define LED Interface    int buttonpin = 3; // define the tilt switch sensor interfaces    int val ;// define numeric variables val    void setup()    {    pinMode(Led, OUTPUT) ;// define LED as output interface    pinMode(buttonpin, INPUT) ;// define the output interface tilt switch sensor    }    void loop ()    {    val = digitalRead(buttonpin) ;// digital interface will be assigned a value of 3 to read val    if(val == HIGH) // When the tilt sensor detects a signal when the switch, LED flashes    {    digitalWrite(Led, HIGH);    }    else    {    digitalWrite(Led, LOW);    }    }