Final Report Part 1: Jaguar

For my Final Design Project I decided to recreate a design that I was fairly familiar with while working as a Mechanical Engineering Intern for Comcast last summer. One of the projects that I worked on while there was a device that had a very modern/futuristic aesthetic and worked as a voice activated speaker/voice assistant. Unfortunately the project was shut down due to cost so I wanted to recreate the design work that I had already done. I knew I wanted the internals to have a voice assistant, connect to Bluetooth, and have a quality internal speaker so I decided to go with an Echo Dot speaker for the internals of my speaker (because I am completely helpless when it comes to electronics). The first step was to disassemble the prebuilt speaker and get the dimensions for my design.

After I measured everything and chose proper mounting places I could begin the CAD assembly of my prototype.

I had to make the overall casing much larger than the Comcast prototype, but it still modeled after the original aesthetic that I was going for. The casing nicely fits the speaker in the center and holds it firmly using mounts that aligned with the speaker’s original mounts. A top frame attached to the top of the casing and had some flexibility to it so that I could later on attach buttons to the top of the speaker for easy volume adjustment. The back of the case had three snaps that would lock into the stand. The stand itself was very difficult to design because the power cord had to nicely snake through the body and come out the back without being seen. I did this by adding a rubber base to the bottom that would lock the cord in and create a more stable base. From here it was onto the 3D printer.

The 3D printing actually ended up being much more difficult than expected even though I have had extensive experience with the machines. This was because I decided to use ABS plastic in my print compared to PLA at first because it has better material properties for longevity and a finish closer to what I was going for. After about 12 tries however, I switched to PLA and got the entire model finished in about 3 tries. Overall I think it turned out extremely well.

You can see in the first picture that I had to add sound dampening pads to reverberate the sound and make it sound much less “plasticy”. You can also notice that I got the light ring working and throughout I made sure that it would be visible even with the top frame. The last steps were to sand, print the rubber base, and add fabric to the top frame.

This is the final product! I added the fabric to the front and you can see the light ring pretty well too. Once adding the top frame I noticed that the sound quality dropped slightly so I decided to get janky and add some holes to the front face. This improved it slightly. Overall I am very proud with the design and think I achieved my aesthetic. This definitely isn’t a project that I’m going to be done with as I still have a few more improvements I want to make.


Here is the link to the presentation:

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12 Comments. Leave new

  • William Benson
    William Benson
    April 29, 2019 1:36 pm

    The lights and design are so cool. It would be great if you added those touch features. Is it for sale?

  • Andrew Lapham
    Andrew Lapham
    April 29, 2019 1:36 pm

    Awesome project and definitely something I can see people buying on the market. Look forward to seeing some future improvements. Great Job!

  • Max Buechler
    Max Buechler
    April 29, 2019 1:35 pm

    Very well done, it sounds and looks awesome. Have you thought about adding a finish too it, or is the white unfinished plastic a part of the desired aesthetic?

  • Nicholas Degenhart
    Nicholas Degenhart
    April 29, 2019 1:34 pm

    This project turned out great. I like that you were able to repurpose an old design from your time at Comcast. Your 3D printing designs turned out really nice.

  • Conrad Trybus
    Conrad Trybus
    April 29, 2019 1:34 pm

    It might look cool if you sanded the surface to smooth it out and make it look less like it was 3D printed. The light ring looks fantastic.

  • The modern look of this speaker is neat. Are you going to be making this public on grabcad or anything so other people can print it as well? If so they could add revisions so that if you make another one you can use them.

  • Eleanor Pearson
    Eleanor Pearson
    April 29, 2019 1:33 pm

    3D printing can be such a pain. Switching to PLA was a really good call. Also the final product looks really sleek and you wouldn’t know that it was 3D printed unless you get really close which I like. I think you really captured the aesthetic that you wanted!

  • Yousef Alqattan
    Yousef Alqattan
    April 29, 2019 1:32 pm

    Very nice project, I like how everything worked out in the end. Great job with fitting in the echo dot into your speaker, I know that would have probably been the most annoying part of this project. I think if you use a better 3d printer, your speaker would turn out much nicer.

  • Wow! this is super cool! I really like how professional this looks, and it works really well too because of all the electronics in the echo dot. Really well done!

  • Hussam Alzahrani
    Hussam Alzahrani
    April 29, 2019 1:32 pm

    I really like the white modern aesthetic. The speaker kind of reminds me of the google home aesthetic they they have going on. I honestly have nothing I would suggest to make it look better. Really amazing job and presentation.

  • Jared Campbell
    Jared Campbell
    April 29, 2019 1:30 pm

    Looks to me like you just placed an echo dot into a container. The aesthetic is nice though, I would put it in my house.


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