https://github.com/volca02/sous-vide-esp8266

A simple slow cooker controller that enables both timer and optionally a PID control via a connected onewire temperature probe.
https://github.com/volca02/sous-vide-esp8266

cooking esp8266 food platformio sous-vide ssd1306

Last synced: 22 days ago
JSON representation

A simple slow cooker controller that enables both timer and optionally a PID control via a connected onewire temperature probe.

• Host: GitHub
• URL: https://github.com/volca02/sous-vide-esp8266
• Owner: volca02
• Created: 2021-01-17T11:45:42.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2023-07-28T08:11:03.000Z (over 1 year ago)
• Last Synced: 2024-11-10T12:48:55.482Z (3 months ago)
• Topics: cooking, esp8266, food, platformio, sous-vide, ssd1306
• Language: C++
• Homepage:
• Size: 840 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 4
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

README

        
# sous-vide-esp8266

![](photos/built.jpg)

This project implements a simple timer and PID controller for a dumb slow cooker to become both a timer enabled slow cooker and a simple sous-vide cooker.

## About

The goal is to have a solid state relay control a simple crock-pot (or other compatible simple slow cooker that comes without any electronics). The usage of such contraption is both to add a timer to that slow cooker, and optionally hold a set temperature (when PID control is enabled in setup screen).

## Materials

You will need a couple of components:

 * [Wemos D1 Mini - or a clone](https://www.aliexpress.com/item/32681374223.html?spm=a2g0s.9042311.0.0.36504c4dLBnw4e)

 * [DS18B20 Waterproof Temp sensor](https://www.aliexpress.com/item/32305869288.html?spm=a2g0s.9042311.0.0.36504c4dLBnw4e)

 * [Solid state relay (DC control, AC output)](https://www.aliexpress.com/item/4000045425145.html?spm=a2g0s.9042311.0.0.36504c4dLBnw4e)

 * [SH1106Spi display](https://www.aliexpress.com/item/32844104782.html?spm=a2g0s.9042311.0.0.27424c4d58Iwcy)

 * [Rotary encoder](https://www.aliexpress.com/item/32915420023.html?spm=a2g0s.9042311.0.0.27424c4d58Iwcy)

 * Power cable

 * 5V power adaptor circuit (i.e. something that converts wall socket power to 5V for the Wemos D1)

 * Your local wall mounted power socket (or a cable power socket)

 * An enclosure - a 3d printable model is in [model/](model/) directory (written in openSCAD) - I used universal pcb mounted into the frame, and an a gutted old phone charger for the power supply (so the power supply mount will have to be modified for your situation). Lacking any other, I used M3/16 screws everywhere but the display, which uses 4x M3/10 screws (16 were too long). Sorry the code is a bit messy.

## Wiring

- `GND` is the D1's ground pin

- `3.3V` is the D1's 3V pin

### Temperature sensor

The Black wire connects to `GND`, Red wire to `3.3V`, Yellow wire to `D4`

### Solid state relay

The DC part connects `-` to `GND`,  `+` to `D8`

The AC part connects one power wire through the relay (as appropriate to your country). Ground wire connects directly through to the output socket.

### Display

These are the display's connections:

 * `D7` - `SDA`

 * `D5` - `SCK`

 * `D3` - `RST`

 * `D1` - `DC`

 * `GND` - `CS`

 * `3.3V` - `VDD`

### Rotary encoder

Due to the limited number of pins, A0 is used as a button detection pin.

 * `3.3V` - pin marked `5V`

 * `GND` - `GND`

 * `A0` - `KEY`

 * `D2` - `S1`

 * `D0` - `S2`

 ### Power adaptor

 The input power gets connected to the power adaptor.

 Power adaptor output connects to `5V` and `GND` leads of the Wemos D1.

### Assembly photos

 Here are some assembly photos for easier orientation:

 

 ![](photos/base.jpg)

 

 ![](photos/internals.jpg)