3_10 Four Note Piano with LEDs

Four Note Code Piano with LEDs

Code

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/* Create a 4 note piano where each of the 4 buttons plays a different tone and corresponds to an LED lighting up */ void setup(){ pinMode(4,INPUT_PULLUP);//button pinMode(5,INPUT_PULLUP);//button pinMode(6,INPUT_PULLUP);//button pinMode(7,INPUT_PULLUP);//button pinMode(9,OUTPUT); //one leg of the RGB LED pinMode(10,OUTPUT); //one leg of the RGB LED pinMode(11,OUTPUT); //one leg of the RGB LED pinMode(12,OUTPUT); //single color LED pinMode(2,OUTPUT); //speaker } void loop(){ if(digitalRead(4)==LOW){ //if button 4 is pressed tone(2,500); //play a tone of 500 hertz on the speaker digitalWrite(9,HIGH); //turn on LED color 9 (one of the RGB LED colors) } else if(digitalRead(5)==LOW){ //otherwise if button 5 is pressed tone(2,700); //play a tone of 700 hertz digitalWrite(10,HIGH); //turn on LED color 10 } else if(digitalRead(6)==LOW){ //otherwise if button 6 is pressed tone(2,900); //play a tone of 900 hertz digitalWrite(11,HIGH); //turn on LED color 11 } else if(digitalRead(7)==LOW){ //otherwise if button 7 is pressed tone(2,1100); //play a tone of 1100 hertz digitalWrite(12,HIGH); //turn on LED color 12 } else{ //otherwise if none of the if-else if statements are true noTone(2); //stop any tones playing on the speaker //Turn off all the LED ports digitalWrite(9,LOW); digitalWrite(10,LOW); digitalWrite(11,LOW); digitalWrite(12,LOW); } } // (c) 2023 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense
 

Walkthrough Video

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