Node-RED Braumeister

Basic Node-RED nodes for interacting with Speidels Braumeister homebrewing system. When a BRAUMEISTERmobil WiFi module is installed, it is running a web server with a rudimentary API. It provides measurement data like temperature or pump status as well as a list of stored recipes.

Requirements

• Braumeister brewing equipment
• BRAUMEISTERmobil WiFi extension module
• Node-RED

braumeister node

This node does an HTTP request to the Braumeister's /bm.txt file. The response is a txt file containing a csv-like string:

"V1.1.27 Sep 12 2018;0004A30B003FA809;0X13:13XCX2930X0X 72.5X0X2234X1X1X5X0X191XA00SXpiX000X0X0X0"

(See /bm.txt for more details what these values stand for.)

This node converts this string into an object containing measurement data / status values.

| value | description | | --------------------- | ----------------------------------------------- | | firmware_version | Braumeister firmware version | | temperature_current | current temperature in °C | | temperature_target | target temperature in °C | | time_target | target time in seconds | | time_elapsed | elapsed time in seconds | | pump | pump status: "off", "on" or "inactive" | | heating | heating status: "off", "on" or "inactive" | | source_string | raw source string |

Example Usage

recipes node

This node does an HTTP request to the Braumeister's /rz.txt file, parses the recipes and returns them in an array of objects:

[
  {
      index: 0,
      mesh_in_temperature: 45,
      step_1_temperature: 50,
      step_1_time: 15,
      step_2_temperature: 60,
      step_2_time: 20,
      step_3_temperature: 70,
      step_3_time: 15,
      step_4_temperature: 75,
      step_4_time: 5,
      boiling_time: 30,
      boiling_temperature: 100,
      hop_1_time: 5,
      hop_2_time: 10,
      hop_3_time: 15,
      hop_4_time: 0,
      hop_5_time: 0,
      hop_6_time: 0,
      beer_name: "Doubly Hoeppi"
    },
    {...}
]

Contributions

Contributions are always welcome! I need help further decrypting the /bm.txt response file.