diff --git a/source_code/GamePad7688Sample b/source_code/GamePad7688Sample
new file mode 100644
index 0000000..c120f7d
--- /dev/null
+++ b/source_code/GamePad7688Sample
@@ -0,0 +1,113 @@
+const int motorIn1 = 2;
+const int motorIn2 = 3;
+const int motorIn3 = 4;      
+const int motorIn4 = 5;       
+
+String dpadLeft_press = "left|1";
+String dpadLeft_release = "left|0";
+String dpadUp_press = "up|1";
+String dpadUp_release = "up|0";
+String dpadRight_press = "right|1";
+String dpadRight_release = "right|0";
+String dpadDown_press = "down|1";
+String dpadDown_release = "down|0";
+
+const int DELAY = 1000;
+
+void setup()  
+{
+  Serial1.begin(57600);
+  Serial.begin(9600);
+  pinMode(motorIn1, OUTPUT);
+  pinMode(motorIn2, OUTPUT);
+  pinMode(motorIn3, OUTPUT);
+  pinMode(motorIn4, OUTPUT);    
+}
+
+void loop()
+{
+  String command="";
+  while (Serial1.available()) {
+   int v = Serial1.read(); 
+   Serial.println(v, DEC);
+    if ( v != -1) {
+      command += (char)v;
+      Serial.println(command);
+      if (command.equals(dpadLeft_press)) {
+        left();
+        delay(DELAY);
+        command = "";
+      } else if (command.equals(dpadLeft_release)) {
+        motorstop();
+        command = "";
+        delay(500);
+      } else if (command.equals(dpadUp_press)) {
+        forward();
+        command = "";
+        delay(DELAY);
+      } else if (command.equals(dpadUp_release)) {
+        motorstop();
+        command = "";
+        delay(500);
+      } else if (command.equals(dpadRight_press)) {
+        right();
+        command = "";
+        delay(DELAY);
+      } else if (command.equals(dpadRight_release)) {
+        motorstop();
+        command = "";
+        delay(500);
+      } else if (command.equals(dpadDown_press)) {
+        backward();
+        command = "";
+        delay(DELAY);
+      } else if (command.equals(dpadDown_release)) {
+        motorstop();
+        command = "";
+        delay(500);
+      }
+    }
+  }
+}
+
+void motorstop()
+{
+  digitalWrite(motorIn1, LOW);
+  digitalWrite(motorIn2, LOW);
+  digitalWrite(motorIn3, LOW);
+  digitalWrite(motorIn4, LOW);
+}
+
+void forward()
+{
+  digitalWrite(motorIn1, HIGH);
+  digitalWrite(motorIn2, LOW);
+  digitalWrite(motorIn3, HIGH);
+  digitalWrite(motorIn4, LOW);
+}
+
+void backward()
+{
+  digitalWrite(motorIn1, LOW);
+  digitalWrite(motorIn2, HIGH);
+  digitalWrite(motorIn3, LOW);
+  digitalWrite(motorIn4, HIGH);
+}
+
+// Let right motor keep running, but stop left motor
+void right()
+{
+  digitalWrite(motorIn1, HIGH);
+  digitalWrite(motorIn2, LOW);
+  digitalWrite(motorIn3, LOW);
+  digitalWrite(motorIn4, LOW);
+}
+
+// Let left motor keep running, but stop right motor
+void left()
+{
+  digitalWrite(motorIn1, LOW);
+  digitalWrite(motorIn2, LOW);
+  digitalWrite(motorIn3, HIGH);
+  digitalWrite(motorIn4, LOW);
+}