"Simple" and cheap, a ~$/€ 12.= Sous-vide with
a Wi-Fi WebSocker Server and PID
control.
(There is also a "Luxe" ~$/€ 40.= Sous-vide
pan Wi-Fi WebSocker Server
with circulation pump and an PID controlled accuracy of 0.06°C)
Sous-vide cooking, hmmm: enjoy your meal - bon appétit
- eet smakelijk
"Simple" Sous-vide cooking:
That's a Sonoff
ESP8266 module with a waterproof DS18B20 Digital temperature sensor.
Programmable over Wi-Fi with a ESP8266 WebSoket
1) Server and a HTML5-Client.
-
Use an electric kettle or rice cooker.
- Connecting to mains via the Sonoff.
-
Hang the sensor in the water.
- Kettle/cooker power switch ON and
set
thermostat
to maximum.
- Open SousVide.html in a modern browser
(PC, Tablet, Smartphone).
-
Connect it to the Sous-vide Server.
- Send command(s) to the Server (see Sous-vide cooking, last page)
- See the temperature chart in your Browser and wait for MP3 signal.
- Enjoy
your meal - Bon appétit - Eet smakelijk.
1) WebSocket?: Real-time bidirectional event-based
communication.
Hardware:
Very affordable on Banggood/AliExpress.
For configuration examples see images and/or Fritzing
(in the download).
Total cost: ~$/€ 12.00.
- Sonoff ESP8266 module
- Waterproof DS18B20 Digital, 1-Wire, temperature sensor
- 4.7KΩ resistor
- 0.5m/yd 3-wire cord with plugs
Software:
Download my SousVideSonoff project
here.
Use the latest
Arduino IDE and
Arduino/ESP8266 libraries or, if you are an advanced programmer,
PlatformIO.
Addresses of
te used third-party libraries in de ino and
header files.
The HTML is a simple test and demonstration of
SousVideSonoff . Develop
your own (graphical) user interface in HTML/JavaScript and use these filess as a
guide.
The SousVideSonoff
webSocket Server must have a static IP.
Edit this:
In SousVide .html: edit the
edit this section,
read readme.txt.
In SousVide .ino/h: edit the
edit this sections.
PID control - Auto Tune PID:
The Arduino PID library
a very good choice. I use this PID library in my Sous-vide projects, with an
accuracy of 0.06°C.
The ideal Kp, Ki and Kd (PID) values are
depending on the power and water content.
Run the
Auto Tune command once.
Start from browser the auto
tuning mode (± 1-3 Hours). The calculated PID parameters are displayed
and saved in the Sonoff module.
If this module is used in different kettle/cooker then note the Kp, Ki, Kd parameters for each
kettle/cooker and use command setPID.
Now the sous-vide pan is ready for cooking.
Sous-vide cooking:
First time use? Set
the temperature scale to Celsius, Fahrenheit or Kelvin. Decimal mark: use
"period/full point" (.) or "decimal comma" (,)(the program converts "," to ".").
Do not use "Digit grouping". All times in minutes or use the hh:mm format (the
program converts it to seconds).
command, arg1, arg2, arg3 | explanation and description ------------------------------------------------------------------------------------------------------ start, temp, time, wait | start (delayed) cooking | temp: *C/*F/*K, setpoint | (min. 35.00/95.00/308.15, max 90.00/194.00/363.15) | time: mmm or hh:mm, cooking time | (mmm: time in minutes, max 4320 or 72:00) | Timer start after wait and reaching the setpoint | wait: mmm or hh:mm, delayed cooking start | (mmm: time in minutes, max 240 or 4:00) | The cooking time start after "wait time" and | the bath has reached the setpoint | If the cooking time is finished, the cooking does not | automatically stopped. | Use the command "stop" to stop cooking. stop, | stop cooking modify, temp, time | changes during cooking | temp: +/- temperature correction offset (format: n.n or -n.n) | time: +/- minutes correction offset setPID, Kp, Ki, Kd | manually fine tuning of the PID-controll Kp, Ki and Kd values | first, use the command "info" to obtain the current values | default values - Kp: 850.0, Ki: 0.5, Kd: 0.1 auto, temp | AutoTune to get Kp, Ki and Kd PID-control values | temp: *C/*F/*K, setpoint as command start info, | list all the values in browser offset, val | sensor correction offset (calibrate) | val: +/- *C/*F/*K, max. or min, 5.0 per command scale, val | temperature scale | val: 0/1/2 (*C/*F/*K) ------------------------------------------------------------------------------------------------------ Displayed time, graph and signal On delayed start: remaining time to start heating On cooking: remaining cooking time, graph (heating + temperature), mp3 annunciate on ready On ready: elapsed cooking time, graph (heating + temperature), mp3 beep