Beer Brewing Computer

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         This is a project I have been working on for the past couple of months. I needed a way to keep my beer boiling at a certain temperature for an extended period of time. What better then to use a computer to do that for me, so I don't have to physically throttle the propane burner. This brew computer is raspberry pi controller and uses multiple ds18b20 1-wire temperature sensors to monitor the beer temperature. Then using the RPI GPIO I can toggle a mosfet to control a solenoid valve on the gas line.
   
   

   

   Prototype

   
   

   

   Laser cut front panel to identify the potentiometers. I wanted some physical interface to set the temperature. 

   
   

   

   Custom graphical interface which is done in python. These python scripts are ran on boot up, so no need for an X server.

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Bcd Clock Build

This is my BCD(binary coded decimal) clock. Built with an atmega168 mcu(like the arduino), ds1307 rtc, and 3 74hc595 shift registers. Added a cp2102 chip for the usb interface so the clock can be configured by a computer.