Step 1. Attaching the pushbuttons the breadboard.
I attached it first as it was a good starting point. Evenly spacing them out is helpful to keeping everything organised.
Here’s what it looks like once all 7 pushbuttons are attached. I adjusted the buttons as I realized there was not enough space to put the wires above the push buttons. I could have put it below however to make things easier, I just followed the diagram.
Step 2. Attach Jumper wires.
I began with just grounding each of the push buttons. All of the white wires have the same function.
After grounding all the pushbuttons I started with connecting the jumper wires from the breadboard to the arduino uno.
These are how the connections went:
Pushbutton C – D10, D – D9, E – D8, F – D7, G – D6, A – D5, B -D4
Step 3. Attach the piezo buzzer to the breadboard and arduino.
For the connection from the piezo speaker to the breadboard attach the piezo speaker ground to the breadboard ground and the positive terminal to the Arduino. Once this is done ensure all the connections are set properly.
Implement the code
Once the circuit as been doublechecked, it is time to run the code through the Arduino and begin testing. I did not have to modify it as my configuration was the same.
This is the code that needs to be uploaded before the “piano” is working.
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);
}
Now it is time to test the piano by playing some melodies.
Melodies
List of melodies to replicate: Still Dre by Dr Dre, ABC by Jackson 5, What a wonderful world by Louis Armstrong
