Mouse Trap: Big Picture

The idea behind this lab comes from the inevitable frustration of a mouse invasion. We’ve all been there in the transition from fall to winter when the mice think it’s acceptable to become roommates through the cold weather. Not only have we devised a simpler and cooler solution to this issue, but we’ve perfected the classic mousetrap to make it more user friendly.

The following lab deals with the classic spring-loaded trap. In a normal situation, the user carefully, and sometimes painfully, sets the trap that will deliver a lethal surprise to our furry friends. The next step goes in one of two directions. Typically, the mouse outsmarts the user and makes off with a belly full of cheese and a bigger ego leaving the user frustrated and more determined. If you are lucky enough, the mouse is caught in the deadly trap. In most cases, the location of the trap is hidden and likely to be forgotten about. If the mouse is caught, the smell of it usually informs the user of success because of where it was hidden.

What we propose will increase the likelihood of “mouse-icide” and inform the user to check the trap upon success or failure via LED.

All I/O will be processed by A3BU and communicated via Bluetooth. Communication by Bluetooth may be an addendum for the future depending on the end of the semester class/work load.

–             User will have to prime the mousetrap beneath an arm of our servo. Position of servo indicating primed (0 degrees) or unprimed (> than 0 degrees)

–             Detection of the Mouse above the kill zone will be verified by photoresistors pointing up from the base of the trap.

–             When input from the diodes is received, the A3BU will command a servo to rotate the arm to a threshold value of 20 degrees or more to release the death-bar

–             SCENARIO 1: Mouse is terminated. This is verified by a timer set on the photoresistors. Speaker will sound to make the location of murder easier to find.

–             SCENARIO 2: Mouse somehow escapes and the death-bar completes an electrical connection that sends an input to the A3BU to inform the controller that we failed (which won’t happen).

–             Electronics will be housed in a separate module behind the trap to make the system as discrete as possible. Wire will be routed out beneath the board for inconspicuousness.

The objective of this lab is to simplify the mouse catching process by making it more effective, safer for your fingers, and more detectable.

Fixed variables include:

The food used: Peanut butter creamy and crunchy. It’s cheap and most desirable among mice.

Location: Along the perimeter of the room against a wall. This is typically the most trafficked area of the home with mice.

Bill Of Materials

Photo-resistors            GM5539 (x4)

Mouse traps                  TomCat (x1)

LED’s                                696-SSL-LX5093AGW (x1)

Servo                               HS-430BH (x1)

Resistor                           10K Ohm (x2)

Serial Interface             MAX2332 IC (x1)

Capacitor                        .1uF       (x7)

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