diff --git a/clockworkpi_keypad.ino b/clockworkpi_keypad.ino
new file mode 100644
index 0000000..17064a7
--- /dev/null
+++ b/clockworkpi_keypad.ino
@@ -0,0 +1,154 @@
+// CLOCKWORK Keypad Arduino driver
+// For more information please visit https://forum.clockworkpi.com
+// HAPPY HACKING
+
+#include "UsbKeyboard.h"
+
+#define KEY_ENTER           0x28    // Keyboard Return (ENTER)
+#define KEY_ESCAPE          0x29    // Keyboard Escape
+#define KEY_BACKSPACE       0x2A    // Keyboard Backspace
+#define KEY_SPACE           0x2C    // Keyboard Space
+#define KEY_DASH            0x2D    // Keyboard - and _
+#define KEY_EQUAL           0x2E    // Keyboard = and +
+#define KEY_HOME            0x4A    // Keyboard Home
+#define KEY_PAGE_UP         0x4B    // Keyboard Page Up
+#define KEY_END             0x4D    // Keyboard End
+#define KEY_PAGE_DOWN       0x4E    // Keyboard Page Down
+#define KEY_RIGHT_ARROW     0x4F    // Keyboard Right Arrow
+#define KEY_LEFT_ARROW      0x50    // Keyboard Left Arrow
+#define KEY_DOWN_ARROW      0x51    // Keyboard Down Arrow
+#define KEY_UP_ARROW        0x52    // Keyboard Up Arrow
+#define KEY_NUM_DASH        0x56    // Keyboard Num Pad -
+#define KEY_NUM_PLUS        0x57    // Keyboard Num Pad +
+
+#define KEY_OFF           1
+#define KEY_ON            0
+#define ADC_BOUNDARY      500
+#define DIGITAL_KEY_NUM   9
+#define ANALOG_KEY_NUM    6
+#define KEY_NUM           (DIGITAL_KEY_NUM + ANALOG_KEY_NUM)
+#define SHIFT_KEY_NUM     2
+#define KEY_NULL          0xff
+
+#define KEYPAD_UP     KEY_UP_ARROW
+#define KEYPAD_LEFT   KEY_LEFT_ARROW
+#define KEYPAD_DOWN   KEY_DOWN_ARROW
+#define KEYPAD_RIGHT  KEY_RIGHT_ARROW
+#define KEYPAD_Y      KEY_I
+#define KEYPAD_X      KEY_U
+#define KEYPAD_A      KEY_J
+#define KEYPAD_B      KEY_K
+#define KEYPAD_MENU   KEY_ESCAPE
+#define KEYPAD_SELECT KEY_SPACE
+#define KEYPAD_START  KEY_ENTER
+#define KEYPAD_LIGHT1 KEY_L
+#define KEYPAD_LIGHT2 KEY_O
+#define KEYPAD_LIGHT4 KEY_Y
+#define KEYPAD_LIGHT5 KEY_H
+
+#define KEYPAD_UP_SHIFT     KEY_UP_ARROW
+#define KEYPAD_LEFT_SHIFT   KEY_LEFT_ARROW
+#define KEYPAD_DOWN_SHIFT   KEY_DOWN_ARROW
+#define KEYPAD_RIGHT_SHIFT  KEY_RIGHT_ARROW
+#define KEYPAD_Y_SHIFT      KEY_O
+#define KEYPAD_X_SHIFT      KEY_Y
+#define KEYPAD_A_SHIFT      KEY_H
+#define KEYPAD_B_SHIFT      KEY_L
+#define KEYPAD_MENU_SHIFT   KEY_BACKSPACE
+#define KEYPAD_SELECT_SHIFT KEY_NUM_DASH
+#define KEYPAD_START_SHIFT  KEY_NUM_PLUS
+#define KEYPAD_LIGHT1_SHIFT KEY_END
+#define KEYPAD_LIGHT2_SHIFT KEY_PAGE_DOWN
+#define KEYPAD_LIGHT4_SHIFT KEY_PAGE_UP
+#define KEYPAD_LIGHT5_SHIFT KEY_HOME
+
+const int pins[KEY_NUM] = {3, 6, 7, 8, 9, 10, 11, 12, 13, 0, 2, 3, 4, 6, 7};
+const int shift_pins[SHIFT_KEY_NUM] = {1, 5};
+
+const int keys[KEY_NUM] = 
+{
+  KEYPAD_UP, KEYPAD_LEFT, KEYPAD_DOWN, KEYPAD_RIGHT, KEYPAD_Y, KEYPAD_X, KEYPAD_A, KEYPAD_B, KEYPAD_START, 
+  KEYPAD_MENU, KEYPAD_SELECT, KEYPAD_LIGHT1, KEYPAD_LIGHT2, KEYPAD_LIGHT4, KEYPAD_LIGHT5
+};
+const int shift_keys[KEY_NUM] = 
+{
+  KEYPAD_UP_SHIFT, KEYPAD_LEFT_SHIFT, KEYPAD_DOWN_SHIFT, KEYPAD_RIGHT_SHIFT, KEYPAD_Y_SHIFT, KEYPAD_X_SHIFT, KEYPAD_A_SHIFT, KEYPAD_B_SHIFT, KEYPAD_START_SHIFT, 
+  KEYPAD_MENU_SHIFT, KEYPAD_SELECT_SHIFT, KEYPAD_LIGHT1_SHIFT, KEYPAD_LIGHT2_SHIFT, KEYPAD_LIGHT4_SHIFT, KEYPAD_LIGHT5_SHIFT
+};
+
+int old_keys[KEY_NUM];
+
+bool shift_key_pressed()
+{
+  for(int i = 0; i < SHIFT_KEY_NUM; i++)
+  {
+    if(analogRead(shift_pins[i]) /ADC_BOUNDARY == KEY_ON)
+      return true;
+  }
+  return false;
+}
+
+void setup()
+{
+  TIMSK0 &= !(1 << TOIE0);
+
+  for(int i = 0; i < KEY_NUM; i++)
+  {
+    if(i < DIGITAL_KEY_NUM)
+    {
+      pinMode(pins[i], INPUT);
+    }
+    old_keys[i] = KEY_NULL;
+  }
+  Serial.begin(115200);
+}
+
+void loop()
+{
+  int on_off, key;
+
+  UsbKeyboard.update();
+  delay(1000);
+
+  for(int i = 0; i < KEY_NUM; i++)
+  {
+    if( i < DIGITAL_KEY_NUM)
+    {
+      on_off = digitalRead(pins[i]);
+    }
+    else
+    {
+      on_off = analogRead(pins[i])/ADC_BOUNDARY;
+    }
+
+    if(on_off == KEY_OFF)
+    {
+      if(old_keys[i] != KEY_NULL)
+      {
+        UsbKeyboard.release(old_keys[i]);
+        old_keys[i] = KEY_NULL;
+      }
+    }
+    else
+    {
+      if(shift_key_pressed())
+      {
+        key = shift_keys[i];
+      }
+      else
+      {
+        key = keys[i];
+      }
+
+      if(key != old_keys[i])
+      {
+        if(old_keys[i] != KEY_NULL)
+        {
+          UsbKeyboard.release(old_keys[i]);
+        }
+        UsbKeyboard.press(key);
+        old_keys[i] = key;
+      }
+    }
+  }
+}