NICHOLAS WARHOLAK
INDUSTRIAL DESIGNER
24 HOUR DESIGN CHALLENGE
For one particular assignment, my class was given a design challenge with only three constraints: One, make a product based around an Arduino Uno board. Two, incorporate a heart rate sensor and an LCD screen. Three, we had 24 hours to make it. I chose to make a CPR assistant.
RAPID PROTOTYPING
I began by dimensioning the circuitry with my trusty calipers, using those measurements to model a precise casing in Solidworks. From these two files I then ran each one on a separate 3D printer to cut my wait time in half.
PROCESSING
To improve the finish quality of the prints, joint compound was added then sanded to a smooth surface. Several coats of quick drying spray paint were then applied to give a uniform appearance.
PROGRAMMING
A simple tone generator loop was added to the serial read out code for the heart rate sensor. While the screen would read out the heart rate of the victim, the "Stayin' Alive" melody and tempo would play on loop to provide a consistent rhythm for applying chest compressions.
ASSEMBLY
I dimensioned screw posts into the casing halves so that once the paint was dry I could enclose the circuitry with four 1/8" bolts, making assembly extremely quick.
