This week we mainly focused on our final project in regards to designing and prototyping. Prior to having group time Vishal had given us resources on the process of prototyping, and reminding us that this would not be the first prototype we would be creating but instead we would keep learning, rebuilding and growing form our prototypes that we create.

My group is Team BCC Creations; we are trying to provide college students with a peace of mind through a cheaper security alternative for their apartments. We have come to a conclusion that many students leave campus during breaks and during those times there are higher chances of trespassing. Thus, we have come up with a “cheap” alarm for a college student, as we don’t have the funds to be purchasing nice alarm systems that some of us may have at our parents’ homes. The alarm can be placed by any door and the alarm will detect whether the door is opened or not. If the door were to open the individual that enters has 5-10 seconds to shut off the alarm before it begins to ring and text the roommates of the apartment. Therefore, unsolicited entry will immediately cause the alarm to ring as well as notify the roommates of the apartment through text messages.

In order to create our alarm we will need a raspberry pi, Twilio, jumper wire, piezo, breadboard, ultrasonic sensor, battery pack, 3D printed housing and Velcro. During our group time we had created a poster that had a diagram of how the components would be connected to each other as well as a sizing guide so we could have a better understanding on how big the housing had to be as well as the alarm system itself. While drawing the diagram we had some concerns on how the parts would fit in but the breadboard gave us more leverage. Because we didn’t have the parts physically in front of us, we still need to approximate some of the components such as the piezo, because we may using a different alternative for the sound system. During class one of our group member had gone to the FabLab to check if they had any Bluetooth modules available for our use, but after speaking with a FabLab assistant we came to an understanding that we could use Twilio as cloud communication platform to send our texts instead of the Bluetooth module which we would need to have Vishal order. The raspberry pi has the capacity to use Wi-Fi and connect with Twilio, so we will still need to test it out but I believe that it could be a very suitable alternative.

After this weeks session we definitely have a better grasp as to how our product will look like, what it will be made of and where to get our components from. I can’t wait to see what we will be able to do in our next class once we have gathered all our components and have them physically laid out in front of us.

The diagram we had drawn in class.

Our ultrasonic sensor and breadboard.