BREATH-O
Project Duration : 5 Weeks
Skills Used : Fusion Modeling, Keyshot, Arduino Coding
Let’s make a change.
Drunk driving as become a severe problem in America over the past 10 years. According to Mothers Against Drunk Driving, “Every 79 seconds someone is killed or injured in a drunk driving crash”. Since 2019, drunk driving deaths have increased by 31%. There is need for change.
Inspiration
For my design I wanted to go for a modern and sleek look that would encourage the use of a breathalyzer. I wanted to incorporate a carabiner that would make it easy to attach to a bag. I also wanted to add a ribbed lid to improve grip and add aesthetic appeal.
Examining Current Products
I examined multiple breathalyzers on the market right now and looked at the pain points and how I could improve them
Ideation
Initial Development
To create my initial models, I used foam core and bristol paper to make a rough prototype of the size and proportions
Prototyping
I started my model making with foam core and bristol paper to get a rough idea of size and proportions. After modeling in fusion I did a test print that unfortunately failed because the wall thickness was too thin. After reworking wall thickness and different proportions i printed the final model and spray painted it to the colors i wanted.
Fusion Modeling
Using fusion 360, I was able to make the exact 3D dimensions of my product. I was also able to import my different components to create housing for them inside my model.
Building the Circuit
01
Testing the Sensor
After getting the alcohol sensor, I created a simple circuit with code from ChatGPT to test how the sensor worked.
04
Soldering to Nano
The Arduino Nano is the brain of the circuit and all the wires are soldered to different inputs and outputs
02
Beginning to Solder
I started by soldering wires to the different ends of the sensor.
05
Finished Circuit
My finished circuit included the 16 bit Neopixel ring light, alcohol sensor, and 9V battery
03
Soldering power together
Since I had multiple components that needed the power source, I had to make multiple 3-way connections.
06
Writing the Code
With the help of ChatGPT I was able to generate a code that calculated a persons ABV using the alcohol sensor
Closing it up
After finishing my working circuit, I fit everything inside of my final 3D printed model and glued the led light case to the carabiner top. I made sure not to glue the body together so that I could take the battery out.
How it works
The arduino board, ring light, and alcohol sensor are all working together to interpret and act out the code that it is given. Using ChatGPT I created a code to accurately determine a person’s ABV. How it works is after breath is detected by the sensor, the white light oscillates for 10 seconds while the sensor is calculating the ABV, then the ring light will flash green is the ABV is below 0.04% and red if it is above 0.04%.
