19OLED Breathalyzer
In this project we’ll use the MQ3 alcohol sensor and an OLED LCD screen to make a mini-breathalyzer.
PARTS REQUIRED
Arduino board
Female-to-male jumper wires
Keyes MQ3 alcohol sensor module
OLED monochrome screen (128×64)
LIBRARIES REQUIRED
SPI
Wire
Adafruit_GFX
Adafruit_SSD1306
HOW IT WORKS
The MQ3 is part of a family of gas sensors that also includes the MQ2, sensitive to methane, butane, and smoke; the MQ4, sensitive to compressed natural gas; the MQ6, sensitive to butane and LPG gas; and the MQ7, sensitive to carbon monoxide. ...
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