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Kegduino - Arduino Kegerator Controller
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Arduino Kegerator Controller Bitdeli Badge

What is it

This is code to control a kegerator with an arduino touch screen. Simply press the button and beer flows.

What else is needed

Setup (in a nutshell)

A lot of assembly required. Follow my tutorial for specifics.

  • Set up the 12V to 5v Step Down
  • Connect the output from the 5V step down to the Vin on the arduino
  • Connect the solenoid - This basically acts as a gate. Input allows flow through the 12V line to turn the solenoid on/off.

    Facing: the left prong of the transistor goes through a 10K resistor to the Digital 2 pin on the arduino The middle pin connects straight to the - side of the Solenoid. The middle pin also connects from 1N4004 diode into the +12V line (striped side in the +12V). The right pin on the transistor goes to ground The + side of the solenoid goes directly into +12V line.

  • Connect the flow meter. Yellow goes to Arduino Digital 3, red to +5v, black to common ground.
  • Connect the temperature sensor. +5v into pin 1. Analog 4 from the arduino goes into pin 2. +5v through a 10K resistor also goes into pin 2. Pin 3 unused. Pin 4 to common ground.
  • Ground the arduino
  • Put data.txt on the sd card that contains (note that {numberofounces} should be an integer that represents how much beer is in the keg at the time of setup and {nameofbeer} is the string name you want to display for the beer). Note2: Do not use the {}'s. Those are there to see, don't use them! See sdcard/data.txt as an example!

    {numberofounces}\n {nameofbeer}

  • Put beer.bmp on the sd card
  • Upload this file to the arduino
  • Get the Adafruit GFX library
  • Get the Adafruit TFTLCD library
  • Get the Adafruit TouchScreen library
  • Change NUMSAMPLES to 3 in libraries/TouchScreen/TouchScreen.cpp! (This makes the touch screen refresh to a median value, meaning that on each refresh it will not try to detect a new press, but continue to realize a hold)
  • If you did everything right, congrats!


Thanks go to Jenna Roberts for the image.

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