Group members:

• Alexander Tong
• Nicholas Stenlund
• Kirnesh Kaushik
• Soren Villafane

This project is a portable and local IoT Breathalyzer that can determine someone’s blood alcohol concentration and help them make safer decisions. The device used an MQ 3 alcohol sensors and return results that can be shared over the web and devices. For interpreting the results, the device contains an LCD screen to make the results easily viewable, and RGB led is present to indicate if the result is high and potentially unsafe so they can be understood if the user is visually impaired at the time. The results were also sent to a html website that could display them in greater detail, as well as used IFTTT to log a list of past results in a google sheet.

Project files:

• Enclosure stl 3d model files and schematic drawing (Bottom Body Rev1.stl, Mouth Piece Rev1.stl, Top Body Rev1.stl, and the drawing is EE1301 Final Drawing.pdf)
• Circuit diagram (EE 1301 Schematic.png)
• Code repository (IoT-Breathalyzer folder)
• Download of spreadsheet containing event log of previous results (EventLog)
• Html website (dynamicbreathalyer.html)

List of components

• Particle Photon: PHOTONH
• MQ 3 sensor: SEN-08880
• Grove RGB Backlight display: 104030001
• 9V battery: 9V-MN1604
• Buck converter: MP1584EN
• Button: TL1100F160Q

Circuit diagram is contained in project files