WTM Sense

Overview

Design and construct 2 speakers to amplify sound: 1. An iPhone 6 case with a portable speaker attached, that provides some amplification, while still remaining sleek and compact for daily use.

• A larger, portable speaker that acts as a dock for the phone and that will be able to produce louder sounds than the smaller amplifier in the iPhone case.

For our demo, these two separate speakers sound producing capabilities will be compared to each other as well as to a regular phone with no speaker attached, using a microphone and sound sensor to measure which produces the loudest sound.

Objectives

As a group, we realized through systems engineering we have little experience with modeling and 3D printing. For this reason, we decided to take this class and spend the semester learning and constructing a design n and model to be printed using a 3D printer. We were thinking about different products that are interesting to us and would want to use in our daily lives. All of us have come across the problem before where we're trying to play a video or song from our phones, but the volume is not loud enough for everyone to hear and we do not have a speaker with us at that moment. We came up with the idea of creating a case for our phones that also doubles as a portable speaker.

Team Members

• Ariel Stern, Senior, Bachelors of Science in Systems Science and Engineering, Minor Candidate in Operation Supply Chain Management
• Audrey Freeman, Sophomore, Systems Science and Engineering and Operation Supply Chain Management
• Savannah Johnson, Senior, Systems Science and Engineering
• TA: Andrew O'Sullivan

Challenges

• User safety: The wires and jumper cables were using to connect the phone to the speaker cannot shock the user
• Phone safety: We can't send too strong of a current through the Aux cord and 'fry' the user's phone
• Privacy Considerations: The speaker cannot be too loud, in order to be considerate of others
• Learning arduino and how to code a display
• Learn how to use Fusion360 (Autodesk) and how to design a functional model to be 3D printed
• Figure out how to amplify sound from the headphone jack using an Aux cord and build a simple circuit connecting it to a speaker