Dynamically Responsive Audio System

For my senior design project in mechanical engineering at Purdue, I wanted to meld a few of my favorite topics -- frequency domain analysis, mechatronics, and really loud music. From four years in the Purdue "All-American" Marching Band I'm a little hard-of-hearing, but my teammates assured me we fit into the third topic pretty well. …

Chocolate Gears!

  ***DISCLAIMER*** You're about to see a 3D printed PLA shaft. I know, it violates any and all conventions of good shaft design-- non-uniform internal structure, pretty much guaranteed temperature warping, a high energy, time-intensive process for a easily machined part -- But if that's gonna bother you, you should probably turn back now because, …

Thermal Modelling of a FDM Printer Heated Bed

The Problem      A common issue in FDM (Fused Deposition Modelling) Printing is uneven heating of the build surface. As thermoplastic is extruded from the nozzle during the first few layers of a print, it needs to be pressed onto a hot surface to stick well. If this doesn't occur properly, a whole multitude …

Lattuce Leaf – Fast Generation of Lattice Metamaterials

Some of my other work in lattice materials has been published here and some unpublished exploration is here. One issue I encountered in these projects is that many of my colleagues don't have experience running command line programs or aren't comfortable editing source code to change lattice parameters. Additionally, everything I had done was based in MATLAB, which limits …

Bézier Bookmark

  Both my girlfriend and I really enjoy reading, and we cherish our books -- never dog-earing the pages. However, we never seem to have a bookmark other than an old receipt, a notecard scattered with vocabulary from an old class, or a torn post-it. I decided that since reading is such a meaningful hobby …

Dynamic Analysis of a Six-Bar Mechanism

 I performed a dynamic analysis of a Watt - II six-bar mechanism with damping and spring forces as a follow-up to a Kinematic Analysis of the underlying linkage. This project was completed as a part of the course ME 352 at Purdue University, and was completed in MATLAB and type-set in LaTeX. While the previous analysis gave …

Designing and Building a Speaker and Class D Amplifier

During my sophomore year at Purdue, I worked with a friend to design and build an audio amplifier and speaker as an Honors Project for the course ECE 201 (Linear Circuit Analysis). The amplifier was based on a LM386 op-amp, with a circuit designed to match the impedance of the cross-over filters of the drivers …

Soft-Electronic Interfaces

A common issue with flexible, soft electronics is how to interface them with PCB. PCB is nearly universally fiberglass board, and flexible PCBs remain out of reach for most makers. While working on other projects with the Faboratory at Purdue, I continuously sought better ways to integrate electronics into soft systems and wearables. I've compiled some photos …

Sensory Glove for Dynamic Hand Proprioception and Tactile Sensing

  From May 2016 to May 2017, I worked with the Faboratory at Purdue University (now at Yale University). A project that I led was the development of a sensory glove based on the sensing technology developed in that lab. For this project, I fabricated the sensors using current film coating techniques, integrated them into …

Kinematic Analysis of a 6-Bar Linkage

For the course ME 352, I analyzed the kinematics of the Watt-II six bar linkage, a mechanism for converting rotational input to near-straight-line motion for a class project shown above. I believe this project demonstrates my engineering mathematics and  MATLAB ability. The report is attached as a PDF below. The format of the report was …