Arduino OSSV (Open Source Sous Vide) Project

I started the Arduino OSSV (Open Source Sous Vide) project after I learned about Sous Vide cooking.  I could not find any information on the web on a well made open source Arduino water bath setup.  Because of this, I set about creating my own.   I would like to keep this page the home for the Arduino Open Source Sous Vide project.  If you would like to modify or improve my design, please contact me and I will host your code on this page or a separate page.  I would like to keep modified deigns all in one spot.
This main page describes the electrical setup and controller which is based on Arduino.  I use a custom circuit board, but an Arduino board, such as the Uno, can be used as well.  The electrical schematic, design files and program are located below.  Construction and setup details are located in the menu to the left under OSSV.
WARNING:  This project uses 110V from voltage mains.  I take no responsibility for the construction of this circuit or wiring of the heater.  All high voltage wiring should be performed by a licensed and insured electrician.
OSSV is in the pre-release stages.  I have the design prototyped on an Arduino Uno, and breadboard, which I use regularly to cook.  The dedicated PCB prototype is complete and being sent for fabrication.  I have written the software but there are a few features I would like to add before V1.0.
Current Features:

  • Complete industrial grade PID controller
  • Cooking Timer
  • 1500 watt heater
  • Customizable Water Bath Size
  • Open source and Arduino based

Comming Soon:

  • UI adjustable PID setting
  • Temperature probe calibration

System Electrical Schematic:
-coming Soon
PCB Electrical Schematic:
-coming Soon
PCB Eagle Design Files:
-coming Soon
Arduino Code:
-coming Soon

All of the above designs and code are licensed under the GNU General Public License and the Sparkfun Beerware License (you buy me a beer if you use this and we meet someday):

Copyright (C)  2011  Mike Ragsdale

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program.  If not, see <>.