Build a Mini Piano with Arduino UNO – Step-by-Step Tutorial

Necessary tools and machines

Soldering iron (generic)

About this project

Step 1: Parts and Material

The Parts which we need are :

* Arduino

* Piezo Buzzer

* Push Buttons - 7

* Jumper Cables

Step 2: Connections

The Buttons are connected to D4 to D10 of the Arduino

The Piezo Buzzer -> D11 of the Arduino

Step 3: The Code

Before you can start playing your piano, you will need to obtain and install the Tone Arduino library if it is not already installed. This can be downloaded from Github here. If you do not know how to install third-party Arduino libraries in your version of the Arduino IDE, reference this guide on Arduino.cc. Attached below, you will find a zip file that contains the Arduino code for Arduino Piano. Download it and unzip it somewhere on your computer. Open Arduino_Piano.ino in the Arduino IDE and upload the code to your Arduino.

Arduino_Piano.rarDownload

Step 4: Play!

And that's it! You should now be able to tap on the keys and hear the corresponding notes played through the buzzer. If the note isn't accurate, you can adjust the note value in the Arduino sketch to set what value that the pitch is achieved.You can also change the scale that is played by uncommenting one of the few scales included, or make your own scale! If you make your own piano, please comment and show us some pictures and videos. We'd love to see some creative instruments!

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Thanks for reading!

Working of the Project

Code

• Code

CodeArduino

//Arduino Piano
/*

Visit the Channel for more interesting projects

https://www.youtube.com/channel/UCks-9JSnVb22dlqtMgPjrlg

*/

#define T_C 262
#define T_D 294
#define T_E 330
#define T_F 349
#define T_G 392
#define T_A 440
#define T_B 493

const int C = 10;
const int D = 9;
const int E = 8;
const int F = 7;
const int G = 6;
const int A = 5;
const int B = 4;

const int Buzz = 11;
const int LED = 13;

void setup()
{
  pinMode(LED, OUTPUT);
  pinMode(C, INPUT);
  digitalWrite(C,HIGH);
  
  pinMode(D, INPUT);
  digitalWrite(D,HIGH);
  
  pinMode(E, INPUT);
  digitalWrite(E,HIGH);
  
  pinMode(F, INPUT);
  digitalWrite(F,HIGH);
  
  pinMode(G, INPUT);
  digitalWrite(G,HIGH);
  
  pinMode(A, INPUT);
  digitalWrite(A,HIGH);
  
  pinMode(B, INPUT);
  digitalWrite(B,HIGH);

   digitalWrite(LED,LOW);
}

void loop()
{
  while(digitalRead(C) == LOW)
  {
    tone(Buzz,T_C);
    digitalWrite(LED,HIGH);
  }

  while(digitalRead(D) == LOW)
  {
    tone(Buzz,T_D);
    digitalWrite(LED,HIGH);
  }

  while(digitalRead(E) == LOW)
  {
    tone(Buzz,T_E);
    digitalWrite(LED,HIGH);
  }

  while(digitalRead(F) == LOW)
  {
    tone(Buzz,T_F);
    digitalWrite(LED,HIGH);
  }

  while(digitalRead(G) == LOW)
  {
    tone(Buzz,T_G);
    digitalWrite(LED,HIGH);
  }

  while(digitalRead(A) == LOW)
  {
    tone(Buzz,T_A);
    digitalWrite(LED,HIGH);
  }

  while(digitalRead(B) == LOW)
  {
    tone(Buzz,T_B);
    digitalWrite(LED,HIGH);
  }

  noTone(Buzz);
  digitalWrite(LED,LOW);

}

Project Repo

Schematics