--- /dev/null
+const int NUMBER_OF_MARACAS = 2;
+const int MARACAS_PINS[] = {6, 7};
+const int MARACAS_DELAY = 5000;
+
+const int NUMBER_OF_DRUMS= 4;
+const int DRUM_PINS[] = {8, 9, 10, 11};
+const int DRUM_DELAY = 2500;
+
+const int GUITAR_THRESHOLD = 20;
+const int GUITAR_PIN = A0;
+const int GUITAR_DELAY = 5000;
+
+int maracas_states[] = {-1,-1};
+int maracas_delays[] = {0, 0};
+
+int drum_delays[] = {0, 0, 0, 0};
+
+int guitar_delay = 0;
+
+void setup() {
+ for (int i = 0; i < NUMBER_OF_MARACAS; i++) {
+ pinMode(MARACAS_PINS[i], INPUT);
+ }
+ for (int i = 0; i < NUMBER_OF_DRUMS; i++) {
+ pinMode(DRUM_PINS[i], INPUT);
+ }
+ Serial.begin(9600);
+}
+
+void loop() {
+ maracas();
+ drums();
+ guitar();
+ update_delays();
+}
+
+
+void maracas() {
+ for (int i = 0; i < NUMBER_OF_MARACAS; i++) {
+ int newState = digitalRead(MARACAS_PINS[i]);
+ if (newState != maracas_states[i] && maracas_delays[i] < 1) {
+ Serial.print("maracas,");
+ Serial.print(i);
+ Serial.println();
+ maracas_states[i] = newState;
+ maracas_delays[i] = MARACAS_DELAY;
+ }
+ }
+}
+
+void drums() {
+ for (int i = 0; i < NUMBER_OF_DRUMS; i++) {
+ if (digitalRead(DRUM_PINS[i]) == HIGH && drum_delays[i] < 1) {
+ Serial.print("drum,");
+ Serial.print(i);
+ Serial.println();
+ drum_delays[i] = DRUM_DELAY;
+ }
+ }
+}
+
+void guitar() {
+ int pitch = analogRead(GUITAR_PIN);
+ if (pitch >= GUITAR_THRESHOLD && guitar_delay < 1) {
+ Serial.print("guitar,");
+ Serial.print(pitch);
+ Serial.println();
+ guitar_delay = GUITAR_DELAY;
+ }
+}
+
+void update_delays() {
+ for (int i = 0; i < NUMBER_OF_MARACAS; i++) {
+ if (maracas_delays[i] > 0) {
+ maracas_delays[i] -= 1;
+ }
+ }
+ for (int i = 0; i < NUMBER_OF_DRUMS; i++) {
+ if (drum_delays[i] > 0) {
+ drum_delays[i] -= 1;
+ }
+ }
+ if (guitar_delay > 0) {
+ guitar_delay -= 1;
+ }
+}