Arduino Breathalyzer

The purpose of this project was to utilize an Arduino breathalyzer sensor I purchased. After utilizing the software to display a level in the GUI, I wanted to make the entire circuit based on one board, with no software required. This required several additional steps:

• A 7 segment display for readout

• Removal of the Arduino Uno Chip from processor

• Soldering all components to breadboard

• Adding a battery power supply

I implemented a decoder to allow for easier implementation of the display. Currently the display functions on separate software as the breathalyzer. My next step is to create software that takes the readings from the breathalyzer and inputs it into the 7 segment display function.

I recently acquired a Hakko FX888D, which should make the soldering portion of this project much easier.