Automatic Door Lock/Unlock (For Home/Office)

• Don't make the mistake I did and drill the hole in the wrong end! The hole should go on the end that is INSIDE the enclosure.
• Drill a small hole through the end of the slide lock as shown.
• Try to get the hole as close to the end as possible!
• This is important because it needs that extra room to slide.

• Drill a hole in the servo gear just big enough for the wire to go through (Blue Circle in the picture).
• Mount the Servo inside the project box, and attach a strong wire (Coat Hanger?) to the servo and slide lock as shown in the picture.
• Don't Permanently mount it until you can test it out. (Alignment is the key)
• You can use a small dab of hot glue to mount it if you have nothing else.

• Using Project Wire, attach very long lengths of wire to the wires on the servo. (Be sure to connect all 3).
• Run the wires through the small hole in the project box that we drilled in step 1.
• Run a piece of conduit on the door itself, from the project box to the other end of the door.
• Next, Run the 3 wires through the conduit.
• Leave about 2" of space between the end of the conduit and the edge of the door.
• Be sure to align the conduit to the hole we drill in the project box.

Run the rest of the conduit along the "outside" of the door.

• Now we're going to run the wires through the flexible tubing as shown.
• Next, slide the flexible tubing inside the ends of the Conduit as shown in the picture.
• You can use hot glue to hold the tubing inside the conduit if needed.
• What this tubing does, is allows the wires to flex when the door is opened and closed.

• Now that we have the conduit and wires all run, and the servo is attached the slide lock, we can hook up the wires!
• Attach the Power wire on the servo to the +5v on the Arduino.
• Attach the Ground wire from the servo to the GND on the Arduino.
• Attach the Signal wire from the Servo to Digital Pin 12.

• Test it out using the Example on Arduino IDE called "Sweep".
• You may have to adjust the alignment a bit to get it working right.
• If all is working well, place the cover on the enclosure, and job well done!