int pb1 = 6; int pb2 = 8; int pb3 = 7; int pb4 = 9; int pb5 = 10; int pb6 = 12; int pb7 = 13; int pb8 = 14; int C; int D; int E; int F; int G; int A; int B; int C2; int buzz = 11; void setup() { G = 0; D = 0; E = 0; F = 0; G = 0; A = 0; B = 0; C2 = 0; pinMode(pb1, INPUT_PULLUP); pinMode(pb2, INPUT_PULLUP); pinMode(pb3, INPUT_PULLUP); pinMode(pb4, INPUT_PULLUP); pinMode(pb5, INPUT_PULLUP); pinMode(pb6, INPUT_PULLUP); pinMode(pb7, INPUT_PULLUP); pinMode(pb8, INPUT_PULLUP); pinMode(buzz, OUTPUT); } void loop() { int C = digitalRead(pb1); int D = digitalRead(pb2); int E = digitalRead(pb3); int F = digitalRead(pb4); int G = digitalRead(pb5); int A = digitalRead(pb6); int B = digitalRead(pb7); int C2 = digitalRead(pb8); if ( digitalRead(pb1) == LOW ) { tone(buzz, 262, 50); } if ( digitalRead(pb2) == LOW ) { tone(buzz, 392, 50); } if ( digitalRead(pb3) == LOW ) { tone(buzz, 440, 50); } if ( digitalRead(pb4) == LOW ) { tone(buzz, 349, 50); } if ( digitalRead(pb5) == LOW ) { tone(buzz, 330, 50); } if ( digitalRead(pb6) == LOW ) { tone(buzz, 294, 50); } if ( digitalRead(pb7) == LOW ) { tone(buzz, 523, 50); } if ( digitalRead(pb8) == LOW ) { tone(buzz, 330, 50); } delay(10); }