Robert Blayne KettlewellEngineering Design Portfolio

CNC Plasma CutterSpring 2014

Leveraging the real-time control system I built for a CNC mill (pg. 3), I modified this system to control a Miller Plasma Torch on a 3-axis gantry table which can cut steel up to 5/8” thick with a resolution of ~10 mils. Above is a part I built for a friend who is a competitive longboarder.

CNC Mill – retrofitted a manual mill to create a computer numerically controlled mill that could produce hobby parts at a resolution of nearly 1/1000 of an inch like the longhorn milled out below.

Winter 2011 CNC MillWinter 2011

I designed and built a 3-axis CNC mill from scratch. The development included a GCode interpreter, optical encoder closed-loop feed-back, and a stepper motor controller. Addi-tionally, this CNC machine can be controlled wirelessly from an iPad app I wrote. Examples of parts I created with this machine can be seen to the left (acrylic custom name plate, DSUB connector housing).

LabVIEW FPGA Guitar EffectsSpring 2012

I created an iPad app that would wirelessly interface with a National Instruments CompactRIO system to create guitar effects through FPGA-based digital filters.

LabVIEW FPGA Guitar Effects – Created an IPad app that would wirlessly interface with a NI CompactRIO system to create dynamic guitar effects through FPGA based digital filters.

Spring 2012

LabVIEW FPGA Guitar Effects – Created an IPad app that would wirlessly interface with a NI CompactRIO system to create dynamic guitar effects through FPGA based digital filters.

Spring 2012

LabVIEW FPGA Guitar Effects –

Created an IPad app that would

wirlessly interface with a NI

CompactRIO system to create

dynamic guitar effects through FPGA

based digital filters.

Spring 2012

Virtual 3-D Putt-PuttFall 2011

I developed a virtual putt-putt golf game in LabVIEW which included a custom physics engine, a projector to display a putting green and virtual golf ball, and a smart camera with an image tracking algorithm which would analyze the putter’s angle and velocity of impact. Before each putt, a new 3-D surface would be generated and projected onto the ground along with a new virtual golf ball.

Non-Contact Skin Cancer Detection Probe - designed in Collaboration with Dr. James Tunnel at The University of Texas at Austin

Spring 2011

Non-Contact Skin Cancer Detection Probe - designed in Collaboration with Dr. James Tunnel at The University of Texas at Austin

Spring 2011

Non-Contact Skin Cancer Detection Probe - designed in Collaboration with Dr. James Tunnel at The University of Texas at Austin

Spring 2011

Non-Contact Skin Cancer Detection ProbeSpring 2011

For this design I developed the optical apparatus and electronic control system, which included a polarizing beam splitter, lens system, and USB camera for pur-pose of characterization and asessment of skin lesions. The optical system relied on Raman spectroscopy to determine the chemical makeup of a lesion under test. This project was completed with close collaboration from Dr. James Tunnel at The University of Texas at Austin.

Solar-Powered Solar Tracking SystemFall 2010

I created a system that would monitor the movement of the sun throughout the day to maximize the inci-dent power received from the sun. The system was completely power autonomous and could recharge itself and start tracking the sun if placed outside fully depleted of charge.

Breath Actuated NebulizerFall 2010

For my senior redesign project I developed the control system for a modified nebulizer (aerosolized medica-tion delivery device).This implementation would only dispense medication during a patient’s inhalation cycle as opposed to the free running original design. This approach could significantly reduce medication waste, decrease treatment cost, and help doctors to ensure proper dosing.

AstraSight – an electronic travel aid for the blind that emitted ultrasonic waves to sense the distance of objects in a given environment and provide feedback in the form of a vibrational intensity to the wrist that scaled with distance.

Summer 2011

AstraSight – an electronic travel aid for the blind that emitted ultrasonic waves to sense the distance of objects in a given environment and provide feedback in the form of a vibrational intensity to the wrist that scaled with distance.

Summer 2011 AstraSightSummer 2010

I designed an electronic travel aid for the blind that emits ultrasonic waves to sense the distance of objects in a given envornment to provide feedback in the form of a vibrational intensity to the wrist that scales with distance.

Battery

Ledge detector

Circuitry

Eye-level

On/off

ACL Damage Assessment Device – After tearing my ACL in high school and finding out that there was a lack of quantitative tools for assessing the severity of knee damage outside of an MRI, I put together a pneumatic actuated and laser translation monitoring system that could more accurately gauge this type of damage.

Summer 2007

ACL Damage Assessment Device – After tearing my ACL in high school and finding out that there was a lack of quantitative tools for assessing the severity of knee damage outside of an MRI, I put together a pneumatic actuated and laser translation monitoring system that could more accurately gauge this type of damage.

Summer 2007

ACL Damage Assessment DeviceSummer 2007

After tearing my ACL in high school and finding out that there was a lack of quantitative tools for assessing the severity of knee damage outside of an MRI, I put together a pneumatic actuated and laser translation monitoring system that could more accurately gauge this type of damage.