User:1sfoerster/enes100/fall2013/p3Access-501/Building a Knock-Knock

=Parts=

other materials:


 * 1) two wires from a cat 5 internet cable
 * 2) 18 gauge wire for motor
 * 3) power supply for the arduino uno (9volt,1amp)
 * 4) String, braided nylon ~1.8mm
 * 5) double sided sticky tape, cloth based
 * 6) Arduino code here and the motor test code here

=Assembly=

Mounting concept
Some things to keep in mind:


 * 1) When deciding where to mount the motor, mark the point on the string where the string attached to the handle pulls at 90 degrees for maximum force
 * 2) When tying the knot for the string on which the motor mounts, Use sharpie to mark the placement of the knot and tie it off of the door so that it is not under tension. Very hard to tie a knot under tension.

Door handle shim
Lamination Tutorial

Electrical connections
Solder the peizo to the resistor Solder the motor wires and attach to screw ports on motor shield

Just have to upload the software and set your knock. here is a video of it working before the final box was put on