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Design Projects

University of Portland Student Newspaper 

100K Challenge Competition - Spring 2016
 
Working with a team of 3 to develop a novel medical device prototype with the intention of competing in the University of Portland 100k venture challenge. 
 
 
 
Real-Time Heating Driver - Spring 2016
In order to reduce "soldering time" for both myself and the electronic technician, we have decided to use the ME department homemade oven to use it as a reflow oven. However, after developing the heating driver, and running some tests; this homemade oven is too weak to fulfill our needs.
 
The driver is a real-time casual system written in C. The algorithm consist of two modes: 
1) Reach the desired temp, and remain constant
Or
2) Follow your own heating profile, in which the algorithm uses y=m*x +b to detemine the trends. 
ECG/EKG Device + LabView - Fall 2015
 
This hardware and software design is for a Biomedical Instrumentation course. The goal was to develop a procedure for students to follow and learn in a laboratory set up.
 
ICD3 RJ11 Breakout board  - Fall 2015
 

This 2-layer RJ11 female breakout board was designed for a Microprocessor and Commnication course. It stacks on a breadboard to help students directly connect the ICD3 MPLAB debugger onto a PIC microcontroller that is on a breadboard.

 

 

MEMS MIC Interface to a DSP demo board - Fall 2015
 

This mini-embedded design was developed for a Real-Time Digital Signal Processing course. It provides students with the ability to transmit audio data via a digital microphone onto the TMS320C5515 eZdsp board. The 2-layer board has a tactile switch, red LED, and MEMS microphone that stacks on top of the DSP module board to transmit digital audio data via the I2S bus.  

 

I2S, DMA, DARAM, interrupts, codec audio in only mode, mic audio only mode, both audio mode firmware development platform for students.

 

C and assembly programming on CCS: 

 

Hardware Driver for a LED Sensor Array - Summer/Fall 2015
 
This embedded design was developed for a Computer Organization course to provide the opportunity for students to have more time developing firmware programing skills. The 2-layer driver board has an on-board microcontroller, but can also be programmed externally. It uses flip-flops, buffers, decoders, and transistors to drive a LED array infrared touch sensor board.  

 

 

Electroencephalogram device - Summer 2015
​

This embedded design uses an analog-front end IC for EEG signal acquisition. The device can have either a unipolar or bipolar recording set-ups by managing the correct registers and SRB lines that can route a common signal to all the inputs. The IC has a bias drive amplifier that can provide negative feedback from the inputs to the body in order to stabilize and narrow the range of the body’s common mode voltage interference. It works as the Right Led Drive instrumental amplifier configuration that improves common mode rejection ratio by driving the body unwanted signals via a separate electrode. This 4-layer board contains low pass filters, ESDs, and regulators that stacks on top of the CC3200 Wi-Fi Launchpad.  

 

Instant Communication Device
​- Senior Year
 

LINC is a wearable long distance push-to talk communication band that allows quick communication among groups. The users of the band are expected to be in possession of an Android smartphone with the LINC application (LINC app), and a data plan for this communication method to be used. Furthermore, LINC users need to initially be in close proximity to sync their bands together in order to initiate a private network. The LINC band eliminates the need to have a mobile smartphone on hand when friends or coworkers would like to stay in constant contact. The team integrated Bluetooth, existing Wireless Area Networks (WAN), Android SDK, SolidWorks CAD, Altium PCB EDA, Audio, and multiple IC technologies to produce a successful wearable band.

 

Development of a User-Friendly Device to Improve Dissection Dexterity - Summer 2014

 

This device mimics an actual dissection setup that biology student perform when dissecting small organism under a microscope. Students use forcepts with electrical feedback to navigate a quinoa seed through a machined aluminum mini-maze without touching its sides to improve their fine motor skills, and hand-eye coordination prior to performing the dissection. This successful embedded design uses two PIC microcontrollers to monitor and record the data into a SD card. The firmware is written in both assembly and C on MPLAB

 

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