https://github.com/chl33/dough133

A temperature-controlled container for proofing and fermenting soughdough
https://github.com/chl33/dough133

eps32 kicad openscad platformio sourdough

Last synced: about 2 months ago
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A temperature-controlled container for proofing and fermenting soughdough

• Host: GitHub
• URL: https://github.com/chl33/dough133
• Owner: chl33
• License: mit
• Created: 2024-09-28T22:39:51.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2024-10-24T00:38:48.000Z (7 months ago)
• Last Synced: 2025-03-29T01:42:32.266Z (2 months ago)
• Topics: eps32, kicad, openscad, platformio, sourdough
• Language: C++
• Homepage: https://selectiveappeal.org/posts/dough133/
• Size: 4.05 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Dough133

Dough133 is a temperature-controlled container for proofing and fermenting sourdough. It uses a small cooler and a PTC heater with a fan to heat the inside of the cooler. A PCBA with an ESP32 regulates the power supplied to the heater to regulate the temperature of the enclosure.

![Doughh133](images/cooler-ebox-scaled-1400x1187.webp)

This repository is a work in progress.  It contains:

- KiCAD design for the PCB.

- Source code for the device firmware.

- OpenSCAD design for 3D printed components.

[Instructions for the assembly](https://selectiveappeal.org/posts/dough133-assembly/) of the device are in this are at my blog.

Please also see the other entries describing this project:

- [Dough133](https://selectiveappeal.org/posts/dough133/)

- [Dough133 Electronics Design](https://selectiveappeal.org/posts/dough133-electronics/)

Components needed for making this device, along with links and approximate price as of September 2024:

| Item | Source  | Approximate cost  |

|---|---|---|

| Coleman 16 qt cooler | [Amazon](https://www.amazon.com/gp/product/B09HN13FN4) | $23 |

| PTC Air Heater 12V 100W | [AliExpress](https://www.aliexpress.us/item/3256803451720173.html) | $7 |

| DC 12V 5A Power Supply | [Amazon](https://www.amazon.com/gp/product/B01GEA8PQA)  | $12  |

## KiCAD

The circuit board design is in [KiCAD/](KiCAD/).

![Circuit board](images/Dough133-PCB-components-1400x1050.webp)

These require footprints in [`chl33_library`](https://github.com/chl33/chl33_library.pretty) and symbols in [`chl33_kicad_sym`](https://github.com/chl33/chl33_kicad_sym).

## OpenSCAD

Designs for 3D-printable components are in [scad/](scad/).

The EBox is based on the [ProjectBox](https://github.com/chl33/ProjectBox) OpenSCAD system.

The heater mount secures the heater and temperature/humidity sensor inside the cooler.

![Heater mount](images/heater-holder2-1400x1203.webp)

The Cooler plug helps avoid heat leaking through the hole through which wires run from the heater mount through the wall of the cooler to the EBox.

![Cooler plug](images/cooler-plug-1400x858.webp)

## Software

The software is based on the [og3](https://github.com/chl33/og3) library.