ESP Brew Engine

[Jerre]

I would like to share my latest project with you, I made a new control system for my brew kettle, as the built-in control had way too much overshoot and was not very practical all together.

It is actually a complete software/firmware for an ESP32 controller, which you can connect to your WiFi and then set up and control the entire brewing cycle via the web interface.

The reason I made it in this way is because you can buy a esp32 board with 4 relays for 10-20€, which makes it very easy to build a control system, all you have to do is put it in a box and connect one or more OneWire temperature sensors to it.

I made it public on github -> GitHub - jeroen79/esp-brew-engine: Esp brew controller engine

If anyone is interested, feel free to try it out and give feedback.

 

[Ozarks Mountain Brewery]

That's great does it have C and f temp settings

 

[Jerre]

At the moment i only has °C, but °F is planned for the near future.

 

[Minbari]

I love innovation like this! Did something similar with labview and ip controlled DIO modules.

Was as bit more expensive than what you did

 

[Jerre]

As promised here is version 1.2.0 that adds support for Fahrenheit, along with some other small changes.

1.2.0

New Features​

• Support for Celsius and Fahrenheit.
• PID loopt time is now configurable.
• Factory Reset button in system settings.
• Nicer recovery page.
• Factory Reset button in recovery page.
• Added manifest.json and svg icon.

 

[Jerre]

Another update!

1.3.0

New Features​

• Heaters are now fully dynamic, up to 10!.
• Configurable wattage per heater.
• Heaters can now be enabled/disabled for boil/mash.
• Schedules have a new flag to set then as boil/mash.
• Support for Buzzer.
• Support for Notifications.
• Speech Notifications via webinterface.
• Added Client/Browser Settings.
• Control Screen stays active while in settings.
• Fullscreen button.

 

[Minbari]

Very cool!

Couplet things you might consider adding (if you have room on the controller)
1) a liquid sensor so the heaters can't come on dry.
2) an E-stop button to disable everything with one button(physical button)

 

[Jerre]

Thx for the feedback, i will add it to the list of idea's

 

[Jerre]

Another update! mainly focused on beerXML import.

1.4.0

Changes​

• Import of BeerXML.
• Different PID settings for Boil/Mash.
• Extra setting to configure stepInterval.
• Dark/Light mode via clientsettings.
• Optimized substeps calculation.
• Optimized control loop, trigger pid faster after target changes.