Things used in this project

Hardware components:
12757 01
SparkFun RedBoard
×1
SparkFun OpenSegment Shield
×1
7-Segment Display - 20mm (Blue)
×1
Wall Charger - 5V USB (1A)
×1
USB Mini-B Cable - 6 Foot
×1
Alcohol Gas Sensor - MQ-3
×1
SparkFun Gas Sensor Breakout Board
×1
Break Away Headers - Straight
×1
Hook-up Wire - White (22 AWG)
×1
ProtoBoard - Square 1" Single Sided
×1
Arduino Stackable Header Kit
×1
Resistor 4.7k Ω
×1
Hand tools and fabrication machines:
Soldering Station
Solder

Schematics

DIY Breathalyzer
Diy breathalyzer

Code

DIY_Breathalyzer
Download ZIP and upload BAC_Display.ino to the Arduino!

Credits

Engineering superhero
Shawn hymel

Engineering Superhero at SparkFun Electronics.

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