initial commit

Reversible-Lights.ino

@@ -0,0 +1,61 @@
+const int buttonPin = 2;
+
+const int ledPin1 = 11;
+const int ledPin2 = 12;
+const int ledPin3 = 13;
+
+int buttonState = 0;
+
+int direction = 1;
+
+void setup() {
+  pinMode(buttonPin, INPUT);
+
+  pinMode(ledPin1, OUTPUT);
+  pinMode(ledPin2, OUTPUT);
+  pinMode(ledPin3, OUTPUT);
+}
+
+void loop() {
+  int buttonStatePrev = buttonState;
+  buttonState = digitalRead(buttonPin);
+
+  // only trigger change when button gets pressed 
+
+  if (buttonState == HIGH) {
+    if (buttonStatePrev == LOW) {
+      direction *= -1;
+    }
+
+    digitalWrite(ledPin1, HIGH);
+    digitalWrite(ledPin2, HIGH);
+    digitalWrite(ledPin3, HIGH);
+    delay(10);    
+  } else {
+    digitalWrite(ledPin1, LOW);
+    digitalWrite(ledPin2, LOW);
+    digitalWrite(ledPin3, LOW);
+
+    if (direction == 1) {
+      digitalWrite(ledPin3, LOW);
+      digitalWrite(ledPin1, HIGH);
+      delay(250);
+      digitalWrite(ledPin1, LOW);
+      digitalWrite(ledPin2, HIGH);
+      delay(250);
+      digitalWrite(ledPin2, LOW);
+      digitalWrite(ledPin3, HIGH);
+      delay(250);
+    } else {
+      digitalWrite(ledPin1, LOW);
+      digitalWrite(ledPin3, HIGH);
+      delay(250);
+      digitalWrite(ledPin3, LOW);
+      digitalWrite(ledPin2, HIGH);
+      delay(250);
+      digitalWrite(ledPin2, LOW);
+      digitalWrite(ledPin1, HIGH);
+      delay(250);
+    }
+  }
+}