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Anti-Theft DeviceGroup 2

Will, Alex, Ken, Ryan and Savannah

Thinking Time

Planning and Process

We first devised our logic gates on a piece of paper as a rough draft.

We checked this by running through 1’s and 0’s by hand and making sure that our outcomes were what we wanted.

After these initial stages on paper we transferred our design into the simulator to test on the computer and to have a cleaner layout.

Simulation Stage

After transferring our design from the paper rough draft to the Yenka circuit simulator we were able to clean up our design.

We eliminated a few logic gates that were not necessary, and were able to more thoroughly test the circuit.

The only restriction of the program is that we did not know how much voltage and current each part of the circuit would draw.

Pin Placement Design

After we had completed our computer logic gate simulation we transferred the design to paper to display the pin placement.

During this step we realized how hectic the wire layout was going to be but made sure we had sketched everything out.

Roles

Due to the small size of the circuit board only one or two of us could work on it at a time so we each had a specialized role.

Ken – Video/Photos and Web Design

Savannah – Power Point Presentation

Alex – wiring of circuit-board

Ryan – wiring of circuit-board and design consulting

Will – logic gate design, circuit board design

The overall Success and the Challenges faced

Overall our groups device was successful. We were able to have each LED light up at the appropriate times , as well as end with our alarm sounding off.

The challenge we overcame was figuring out what was the reason the alarm would not sound off.

We ended up with a wire that was accidentally short circuiting the speaker assembly, so when that was removed the whole system worked perfectly.

Project Improvement

If we had known more Boolean Algebra before we started, the logic gate design would have been easier.

Also the design of the XOR assembly would have been made easier by the knowledge of Boolean Algebra.

Outlook for the Future

Knowing what we know now and experiencing the complexity of making the system, we know the importance of fully sketching out the circuit and testing it thoroughly.

Also, the role designation of each group member is important in order to get everything done on time, instead of wasting time sitting around.