first

first

Code/piano_tiles_relay_mode.pde

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+void setup()
+{
+  //Serial.begin(9600);
+
+  pinMode(4,OUTPUT);
+  digitalWrite(4,LOW); 
+  pinMode(5,OUTPUT);
+  digitalWrite(5,LOW); 
+  pinMode(6,OUTPUT);
+  digitalWrite(6,LOW); 
+  pinMode(7,OUTPUT);
+  digitalWrite(7,LOW); 
+
+}
+
+int delay1 = 90;
+int delay2 = 85;
+int present = 0;
+
+void loop()
+{
+  start:
+    int v1,v2,v3,v4;
+  //Serial.print("First ");
+  v1 = analogRead(A5);
+  //Serial.print(v1);
+
+  //Serial.print("   Second ");
+  v2 = analogRead(A4);
+  //Serial.print(v2);
+
+  //Serial.print("   Third ");
+  v3 = analogRead(A3);
+  //Serial.print(v3);
+
+ // Serial.print("   Fourth ");
+  v4 = analogRead(A2);
+ // Serial.println(v4);
+
+  if(v1<650) // in black
+  {
+    digitalWrite(4, HIGH);
+    delay(delay2);
+    digitalWrite(4, LOW);
+    delay(delay1);
+    present = 1;
+
+  }
+    if(v2<650) // in black
+  {
+    digitalWrite(5, HIGH);
+    delay(delay2);
+    digitalWrite(5, LOW);
+    delay(delay1);
+    present = 2;
+  }
+    if(v3<650) // in black
+  {
+    digitalWrite(6, HIGH);
+    delay(delay2);
+    digitalWrite(6, LOW);
+    delay(delay1);
+    present = 3;
+  }
+    if(v4<650) // in black
+  {
+    digitalWrite(7, HIGH);
+    delay(delay2);
+    digitalWrite(7, LOW);
+    delay(delay1);
+    present = 4;
+  }
+
+
+}

README.txt

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+In this project, Arduino plays piano tiles very fast. 
+
+This is an open source project by: