*NOTE* THIS PROJECT IS DONE BY A GROUP OF STUDENTS FROM SINGAPORE POLYTECHNIC

The tools and components were provided by our FYP supervisor Teo Shin Jen.

Sous-vide (/suËËviËd/; French for "under vacuum")[1] is a method of cooking food sealed in airtight plastic bags in a water bath for a long time—72 hours in some cases—at an accurately determined temperature much lower than normally used for cooking, typically around 60 °C (140 °F). The intention is to cook the item evenly, not overcook the outside while still keeping the inside at the same 'doneness' and to keep the food juicier.

Items needed:
Arduino Uno x 1
2x16 LCD x 1
RGB x 1
LM35 Temperature Sensor x 1
Sparkfun Solid State Relay (SSR) Control x 1
1K ohm Resistors x 6
Push Buttons x 3
Vacuum Pump x 1
Electrical Heating Appliance x 1
AC Face Plate x 1
AC Plug x 1

Skills Needed:
Soldering skill
Basic electrical engineering skill

Overview:
DIY Sousvide Arduino Shield
AC Power Control
Code for Arduino
Experiment on Sousvide Arduino Shield

Step 1:

DIY Sousvide Arduino Shield

Solder the following components into an Arduino Sousvide Shield as shown:
2x16 LCD x 1
RGB x 1
LM35 Temperature Sensor x 1
Sparkfun Solid State Relay (SSR) Control x 1
1K ohm Resistors x 6
Push Buttons x 3

Purpose of the components:
Arduino Uno - Prototyping platform for testing
LCD - Display results (eg. temperature)
RGB - Visual signal
LM35 Temperature Sensor - Detect temperature
SSR - Electronic switching device in which a small control signal controls a larger load current or voltage
Push Buttons - Setting

sous-vide schematics.xls
Download

Step 2:

AC Power Control

1. Wire the AC plug to the AC Face Plate with the live pin as shown

2. The live pin will then be connected to the SSR

Step 3:

Code for Arduino

1. Download Arduino software from http://arduino.cc/en/Main/Software

2. Download PIDv1 library from http://arduino.cc/playground/Code/PIDLibrary

3. Add "PID_v1" folder to Drive:/<directory>/arduino-1.0/libraries

4. Run Arduino software

5. Copy code from https://snipt.net/sourjuice87/ssr/?key=08329317010a7ff6e87232cbcfed4a8c

6. Verfiy and upload

Step 4:

Experiment on Sousvide Arduino Shield

1. Preparation of food with vacuum pump
    - Place your ingredients into a ziplock bag
    - Use a vacuum pump to vacuum seal the ziplock bag

2. Electrical heating appliance
    - Fill an electrical boiler or cooker with water

3. Waterproof LM35 temperature sensor
    - Place the LM35 temperature into a straw
    - Seal the both end of the straw

4. Set up DIY sousvide
    - Hook up Arduino Uno with the DIY Arduino Sousvide Shield and run the code
    - Place the waterproofed LM35 temperature sensor into the electrical heating applicance which is filled with water
    - Submerge the vacuum sealed ziplock bag which contain ingredients into the water bath

5. Ready for COOKING!!!