Use Arduino to create music playback + flash instruments with the rhythm

Use Arduino to create music playback + flash instruments with the rhythm

1. Experimental Equipment

Arduino development board, a breadboard, some Dupont wires, some LED lights, some 220 ohm resistors, and a buzzer.

2. Experimental operation

• Connect the positive poles of the six LED lights to ports 2-7 of the I/O interface of the Arduino board in sequence,
• Connect the negative pole of the power supply to a 220 ohm resistor.
• The overall negative electrode is connected to the GND interface of the arduino board.
• The positive pole of the buzzer is connected to port 8 of the I/O interface of the arduino board, and the negative pole is connected to GND.

3. Code implementation

int buzzer=8; //Set the number that controls the buzzer. Set the number that controls the buzzer. IO pin
 int BASE = 2; //The I/O pin connected to the first LED
 int NUM = 6; //Total number of LEDs
   int song[] = {
 /* Children's song "Little Star" */
 277,277,415,415,466,466,415,
 370,370,330,330,311,311,277,
 415,415,370,370,330,330,311,
 415,415,370,370,330,330,311,
 277,277,415,415,466,466,415,
 370,370,330,330,311,311,277,
 415,415,370,370,330,330,311,
 415,415,370,370,330,330,311,
 277,277,415,415,466,466,415,
 370,370,330,330,311,311,277,
 };
 void setup() {
 for (int thisNote = 0; thisNote <154; thisNote++)
 {
 int noteDuration = 1000/noteDurations[thisNote]; // Calculate the time of each beat. Taking one beat as one second as an example, a quarter beat is 1000/4 milliseconds and an eighth beat is 1000/8 milliseconds.
 tone(8, song[thisNote],noteDuration);
 int pauseBetweenNotes = noteDuration * 1.10; // The pause interval between each note is preferably 130% of the note
 delay(pauseBetweenNotes);
 noTone(8);
 }

 for (int i = BASE;i < BASE + NUM; i ++)
   {
     pinMode(i, OUTPUT); //Set the number. Set the number. The I/O pin is output. The pin is output.
     }
  for (int i = BASE; i < BASE + NUM; i ++)
   {
     digitalWrite(i, LOW); //Set the number. Set the digital I/O pin output to "Low", that is, gradually turn off the light.
     delay(200); //delay
     }
 for (int i = BASE; i < BASE + NUM; i ++)
     {
      digitalWrite(i, HIGH); //Set the digital I/O pin output to "high", that is, gradually turn on the light
       delay(200); //delay
      }
 }
 void loop() {
 setup();
 }
 

4. Realize the physical picture

4.1 Running water lamp interface:

4.2 buzzer interface:

4.3 Arduino board interface: