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arduino/rc_keyboard_control.ino

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+// assign pin num
+int right_pin = 6;
+int left_pin = 7;
+int forward_pin = 10;
+int reverse_pin = 9;
+
+// duration for output
+int time = 50;
+// initial command
+int command = 0;
+
+void setup() {
+  pinMode(right_pin, OUTPUT);
+  pinMode(left_pin, OUTPUT);
+  pinMode(forward_pin, OUTPUT);
+  pinMode(reverse_pin, OUTPUT);
+  Serial.begin(115200);
+}
+
+void loop() {
+  //receive command
+  if (Serial.available() > 0){
+    command = Serial.read();
+  }
+  else{
+    reset();
+  }
+   send_command(command,time);
+}
+
+void right(int time){
+  digitalWrite(right_pin, LOW);
+  delay(time);
+}
+
+void left(int time){
+  digitalWrite(left_pin, LOW);
+  delay(time);
+}
+
+void forward(int time){
+  digitalWrite(forward_pin, LOW);
+  delay(time);
+}
+
+void reverse(int time){
+  digitalWrite(reverse_pin, LOW);
+  delay(time);
+}
+
+void forward_right(int time){
+  digitalWrite(forward_pin, LOW);
+  digitalWrite(right_pin, LOW);
+  delay(time);
+}
+
+void reverse_right(int time){
+  digitalWrite(reverse_pin, LOW);
+  digitalWrite(right_pin, LOW);
+  delay(time);
+}
+
+void forward_left(int time){
+  digitalWrite(forward_pin, LOW);
+  digitalWrite(left_pin, LOW);
+  delay(time);
+}
+
+void reverse_left(int time){
+  digitalWrite(reverse_pin, LOW);
+  digitalWrite(left_pin, LOW);
+  delay(time);
+}
+
+void reset(){
+  digitalWrite(right_pin, HIGH);
+  digitalWrite(left_pin, HIGH);
+  digitalWrite(forward_pin, HIGH);
+  digitalWrite(reverse_pin, HIGH);
+}
+
+void send_command(int command, int time){
+  switch (command){
+
+     //reset command
+     case 0: reset(); break;
+
+     // single command
+     case 1: forward(time); break;
+     case 2: reverse(time); break;
+     case 3: right(time); break;
+     case 4: left(time); break;
+
+     //combination command
+     case 6: forward_right(time); break;
+     case 7: forward_left(time); break;
+     case 8: reverse_right(time); break;
+     case 9: reverse_left(time); break;
+
+     default: Serial.print("Inalid Command\n");
+    }
+}