GND is the ground pin of the Sound Sensor module and it should be connected to the ground pin of the Arduino. DOUT is the Digital output pin of the board, ... In the loop function, we have a local ...

Often you want to iterate over a series of pins and do something to each one. For instance, this example blinks 6 LEDs attached to the Arduino by using a for() loop to cycle back and forth through ...

Contribute to arduino/reference-it development by creating an account on GitHub. int ledPin = 13; // LED connected to digital pin 13 int inPin = 7; // pushbutton connected to digital pin 7 int val = 0 ...