Boozeduino
 Circuit diagram using Fritzing.  
 MQ-3 sensor.  You'll need data voltage divider to get usable data out of sensor.  This sensor is essentially a heater that changes resistance with the amount of alcohol it detects.  
 The sensor embedded in to rock band microphone.  
 A whole lot of LED's and the top plate.  
 Attaching the daughter board to the dev board.  
 Putting it all together.  
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