diff --git a/code/code_eigenbau.py b/code/code_eigenbau.py
new file mode 100644
index 0000000..33beeff
--- /dev/null
+++ b/code/code_eigenbau.py
@@ -0,0 +1,132 @@
+import board
+import time
+from keybow2040 import Keybow2040
+
+import usb_hid
+from adafruit_hid.keyboard import Keyboard
+from adafruit_hid.keyboard_layout_us import KeyboardLayoutUS
+from adafruit_hid.keycode import Keycode
+
+from adafruit_hid.consumer_control import ConsumerControl
+from adafruit_hid.consumer_control_code import ConsumerControlCode
+
+# Set up Keybow
+i2c = board.I2C()
+keybow = Keybow2040(i2c)
+keys = keybow.keys
+
+# Set up the keyboard and layout
+keyboard = Keyboard(usb_hid.devices)
+layout = KeyboardLayoutUS(keyboard)
+
+# Set up consumer control (used to send media key presses)
+consumer_control = ConsumerControl(usb_hid.devices)
+
+# Our layers. The key of item in the layer dictionary is the key number on
+# Keybow to map to, and the value is the key press to send.
+
+# Note that keys 0-3 are reserved as the modifier and layer selector keys
+# respectively.
+
+layer_0 =     {}
+
+layer_1 =     {4: Keycode.PERIOD,
+               5: Keycode.ONE,
+               6: Keycode.FOUR,
+               7: Keycode.SEVEN,
+               8: Keycode.ZERO,
+               9: Keycode.TWO,
+               10: Keycode.FIVE,
+               11: Keycode.EIGHT,
+               12: Keycode.ENTER,
+               13: Keycode.THREE,
+               14: Keycode.SIX,
+               15: Keycode.NINE}
+
+layer_2 =     {4: "Mit freundlichen Gruessen\nMichael Grote "
+                }
+
+layer_3 =     {6: ConsumerControlCode.VOLUME_DECREMENT,
+               7: ConsumerControlCode.SCAN_PREVIOUS_TRACK,
+               10: ConsumerControlCode.MUTE,
+               11: ConsumerControlCode.PLAY_PAUSE,
+               14: ConsumerControlCode.VOLUME_INCREMENT,
+               15: ConsumerControlCode.SCAN_NEXT_TRACK}
+
+layers =      {0: layer_0,
+               1: layer_1,
+               2: layer_2,
+               3: layer_3}
+
+current_layer = 1
+nutzbare_tasten = range(4,16) #zählt von 1-16; nicht 0-15
+
+# The colours for each layer
+# https://gist.github.com/ninrod/b0f86d77ebadaccf7d9d4431dd8e2983
+# https://colorhunt.co/palette/f7fd04f9b208f98404fc5404
+
+# setze farben auf layer keys
+keybow.keys[0].set_led(247, 253, 4)
+keybow.keys[1].set_led(249, 178, 8)
+keybow.keys[2].set_led(249, 132, 4)
+keybow.keys[3].set_led(252, 84, 4)
+for n in nutzbare_tasten:
+    keybow.keys[n].set_led(255,155,255)
+
+while True:
+    # Always remember to call keybow.update()!
+    keybow.update()
+
+
+    if keys[0].pressed:
+        current_layer = 0
+        for n in nutzbare_tasten:
+            keybow.keys[n].set_led(247, 253, 4)
+        keybow.keys[0].set_led(247, 253, 4)
+        keybow.keys[1].set_led(255, 255, 255)
+        keybow.keys[2].set_led(255, 255, 255)
+        keybow.keys[3].set_led(255, 255, 255)
+    elif keys[1].pressed:
+        current_layer = 1
+        for n in nutzbare_tasten:
+            keybow.keys[n].set_led(249, 178, 8)
+        keybow.keys[0].set_led(255, 255, 255)
+        keybow.keys[1].set_led(249, 178, 8)
+        keybow.keys[2].set_led(255, 255, 255)
+        keybow.keys[3].set_led(255, 255, 255)
+    elif keys[2].pressed:
+        current_layer = 2
+        for n in nutzbare_tasten:
+            keybow.keys[n].set_led(249, 132, 4)
+        keybow.keys[0].set_led(255, 255, 255)
+        keybow.keys[1].set_led(255, 255, 255)
+        keybow.keys[2].set_led(249, 132, 4)
+        keybow.keys[3].set_led(255, 255, 255)
+    elif keys[3].pressed:
+        current_layer = 3
+        for n in nutzbare_tasten:
+            keybow.keys[n].set_led(252, 84, 4)
+        keybow.keys[0].set_led(255, 255, 255)
+        keybow.keys[1].set_led(255, 255, 255)
+        keybow.keys[2].set_led(255, 255, 255)
+        keybow.keys[3].set_led(252, 84, 4)
+
+    for taste in layers[current_layer].keys():
+        if keys[taste].pressed:
+            key_press = layers[current_layer][taste]
+            if current_layer == 0:
+                keyboard.send(key_press)
+            elif current_layer == 1:
+                keyboard.send(key_press)
+            elif current_layer == 2:
+                layout.write(key_press)
+            elif current_layer == 3:
+                consumer_control.send(key_press)
+
+
+#        keycode = current_layer[key.number]
+#        if keys[taste].pressed:
+#            keyboard.send(keycode)
+
+
+# farben als vars