Mini Piano With Arduino 101




Introduction: Mini Piano With Arduino 101

This is a mini piano board with only 4 customizable buttons allowing you to play any frequency and tone you want. It is a simple yet fun toy to build especially for kids!

Here's also a recording of my happy birthday-twinkle twinkle Arduino remix!

Step 1: Materials and Tools

  • Arduino
  • 4x Push button switches
  • 4x 10kΩ resisitor
  • 6x jumper wires
  • Breadboard wires
  • Breadboard

Step 2: Connecting to Ground

  • Connect one of the pins of each of the switches to ground.
  • Connect one of the buzzer pins to ground.

It doesn't matter which one you connect since the remaining pin will be the signal pin.

Step 3: Connecting the Resistors

  • Connect each of the 10kΩ resistor between power (red power rail) to one of the pins of each switch, this is also known as the signal pin.
  • Connect this power rail to 3.3V.

Step 4: Connecting the Signal

  • Connect the signal pin of each switch to pins 2-5 on the Arduino.

Step 5: Coding and Uploading

Upload the following code to your Arduino, once you have selected the appropriate board and port under tools.

const int yellow = 2;
const int green = 3; const int blue = 4; const int red = 5; const int buzz = 6;
int notes[] = {262,294,330,349};
void setup() {
  pinMode (yellow, INPUT);
  pinMode (green, INPUT);
  pinMode (blue, INPUT);
  pinMode (red, INPUT);
  pinMode (buzz, OUTPUT);
  tone (buzz, 2000);
void loop() {
  if (digitalRead(yellow) == LOW)
    {tone(buzz, notes[0], 50);
    delay (50);
  else if (digitalRead(green) == LOW)
    {tone (buzz, notes[1], 50);
    delay (50);
  else if (digitalRead(blue) == LOW)
    {tone (buzz, notes[2], 50);
    delay (50);
  else if (digitalRead(red) == LOW)
   {tone (buzz, notes[3],50);
    delay (50);
    noTone (buzz);

Step 6: Demo

Makerspace Contest 2017

Participated in the
Makerspace Contest 2017

1 Person Made This Project!


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1 year ago

This is a pretty straightforward build, but the directions and photos are a bit misleading if students don't understand the ins and outs of signal/ground pins and are just trying to follow the directions.

The biggest issue is no where in the direction does it say to hook up the signal pin of the buzzer to pin 6 on the Arduino. I was able to figure it out because it is shown in the picture, though not very clearly.