Embedded Files
Evidence of Work :
For this project, our group reverse engineered a Vivint indoor security camera. Our main goal was to understand how a small home security device can record video, detect motion, connect to WiFi, allow two way audio, and send alerts through a mobile app. We wanted to see how every part inside the camera works together to keep a home safe. To complete the project, we disassembled the camera, identified each internal component, created detailed sketches, and wrote four main engineering analyses. We also created a final presentation that shows our findings from the inside of the device.
Our final product included a complete teardown of the camera, labeled photos, a functional analysis chart, structural diagrams, a full materials report, and a manufacturing explanation. We also explained how motion detection works, how night vision functions, how the image sensor records video, and how the call button communicates with the app. The slideshow and written report show exactly how the device operates.
Reflection
This project helped me understand how a real security product works and taught me important skills while working with my team. Two of the six C’s that I feel I did well were Collaboration and Critical Thinking. I collaborated well by helping divide the tasks fairly and keeping our progress organized. For example, each group member focused on a different part of the analysis so we could understand all the inner parts of the camera. I also used critical thinking when learning how the motion detection system and the night vision system worked. There was not a lot of easy information online about some parts, so we used the device itself to study how each feature operated.
Two of the six C’s that I can improve are Communication and Creativity. In terms of communication, our group sometimes waited too long before assigning tasks. We could have talked earlier about who would collect photos, who would write each section, and who would organize the layout of the slideshow. For creativity, we could have made our presentation more visually interesting by adding more diagrams or simplified graphics. In the future, I plan to start planning earlier, talk more with my group during the project, and look for ways to add creative elements to the final product.
Content
Functional Analysis:
The Vivint security camera records high quality video using a four megapixel CMOS sensor and a wide lens. The infrared lights allow the camera to see in the dark and the filter switches between day and night modes for clear images. The microphone and speaker allow two way audio through the app so users can talk to people at home. The WiFi module connects the camera to the internet so it can send alerts and store clips in the cloud. The processor controls motion detection, video processing, and Smart Clip recording. The call button sends a fast alert to the user’s phone. The mounting plate holds the camera in place and the AC adapter supplies power using twelve volts of direct current. All these parts work together to provide home monitoring from anywhere.
Structural Analysis:
The camera housing is made from strong plastic that protects the delicate parts inside. The mounting plate and screws attach the device safely to a wall or shelf. The internal frame keeps the lens, sensor, LEDs, and boards aligned so the camera can record clear video. The power cord brings in stable energy and the antenna is placed in a position that improves signal strength. The fasteners carry both the weight of the camera and any outside loads such as someone bumping into it. The bracket spreads tension and shear forces so the camera does not rotate or fall. Each part supports the others so the camera stays safe, steady, and reliable over time.
Materials Analysis:
The outer shell is made from polycarbonate which is strong, lightweight, and impact resistant. The lens cover is made from optical grade polycarbonate for clear video and scratch protection. The sensor is made from silicon CMOS which captures detailed images. The microphone and speaker use thin plastic or aluminum diaphragms, copper coils, and magnets. The motion sensor uses pyroelectric ceramic that detects changes in infrared radiation. The WiFi module has copper antennas and the processor is made from silicon. The power system uses a lithium ion battery or a twelve volt adapter depending on the model. LED indicators use materials like gallium nitride. Rubber seals protect the camera from dust and moisture.
Manufacturing Analysis:
The plastic casing is made by shaping liquid plastic into molds. The camera module, lens, and sensor are placed on the circuit board which works like the brain of the device. Machines attach the processor, memory, WiFi chip, microphones, motion sensor, speaker, and infrared lights. These parts are soldered to the board. After assembly, workers check each part to make sure it works correctly. The camera is then packaged and shipped. Some parts on the main board are sealed for protection and some models use coatings to keep water out. Debug points on the board allow technicians to test connections.
Product Redesign:
Our redesign would include a rechargeable lithium ion battery so the camera can work during power outages. These batteries store a lot of energy and are lightweight. We would also explore replacing the polycarbonate shell with a more environmentally friendly material. If we cannot replace the plastic, we would include instructions for proper recycling to reduce waste.
Page updated
Report abuse