add Arduino controller

Arduino/Controller/Controller.ino

@@ -0,0 +1,72 @@
+
+int langs[] = {2,3,4,5};
+int leds[] = {6,9,10,11};
+bool state[] = {0,0,0,0};
+int old = 0;
+int current = 0;
+
+void setup() {
+  
+  Serial.begin(9600);
+  
+  for(int i=0; i<4; i++) {
+    pinMode(langs[i], INPUT);
+    pinMode(leds[i], OUTPUT);
+  }
+}
+
+void loop() {
+
+  checkStatus();
+  
+  if(current == 0) {
+    for(int i=0; i<255; i++) {
+      checkStatus();
+      for(int x=0; x<4; x++) {
+        analogWrite(leds[x], i);
+      }
+      delay(10);
+    }
+    for(int i=255; i>0; i--) {
+      checkStatus();
+      for(int x=0; x<4; x++) {
+        analogWrite(leds[x], i);
+      }
+      delay(10);
+    }
+  } else {
+    for(int i=0; i<100; i++) {
+      checkStatus();
+      if(current != 0) {
+        analogWrite(leds[current-1], i);
+      }
+      delay(10);
+    }
+    for(int i=100; i>0; i--) {
+      checkStatus();
+      if(current != 0) {
+        analogWrite(leds[current-1], i);
+      }
+      delay(10);
+    }
+  }
+}
+
+
+void checkStatus() {
+  
+  current = 0;
+  for(int i=0; i<4; i++) {
+    state[i] = digitalRead(langs[i]);
+    //Serial.print(state[i]);
+    //Serial.print("\t");
+    if(state[i] == LOW) {
+      current = i+1;
+    }
+  }  
+
+  if(old != current) {
+    old = current;
+    Serial.println(current);
+  }
+}