const int leds[] = {2, 3, 4, 5, 6, 7, 8, 9}; // LED pins
const int buttons[] = {6, 5, 4, 3, 2}; // Button pins
const int delayTime = 750; // 80 BPM, adjust as needed
void setup() {
// Initialize LEDs as OUTPUT
for (int i = 0; i < 8; i++) {
pinMode(leds[i], OUTPUT);
}
// Initialize buttons as INPUT_PULLUP
for (int i = 0; i < 5; i++) {
pinMode(buttons[i], INPUT_PULLUP);
}
}
void loop() {
if (digitalRead(buttons[0]) == LOW) { // Active LOW due to INPUT_PULLUP
playA();
} else if (digitalRead(buttons[1]) == LOW) {
playM();
} else if (digitalRead(buttons[2]) == LOW) {
playR();
} else if (digitalRead(buttons[3]) == LOW) {
playK();
} else if (digitalRead(buttons[4]) == LOW) {
playE();
}
}
// Preset Functions
void playA() {
flashLeds(0, 8);
}
void playM() {
flashLeds(0, 3);
flashLeds(4, 8);
}
void playR() {
flashLeds(0, 3);
}
void playK() {
flashLeds(0, 5);
}
void playE() {
flashLeds(0, 5);
}
void flashLeds(int start, int end) {
for (int i = start; i < end; i++) {
digitalWrite(leds[i], HIGH);
}
delay(delayTime);
for (int i = start; i < end; i++) {
digitalWrite(leds[i], LOW);
}
delay(delayTime);
}
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