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BrewTroller v2.7 Manual (develop)
This is intended to be the BrewTroller manual for the most recent develop branch of the github.com/oscsys/brewtroller repo. This is a living document that updates as features are added.
The latest develop branch of this repository is available here: https://github.com/OSCSYS/brewtroller/archive/develop.zip
This section covers changes that must be made before the firmware source is compiled and uploaded to a target device.
The BrewTroller firmware supports several different target device types. Each target device supported has a unique HWProfile.h file that configures BrewTroller for target device. These HWProfile.h files are stored in a HWProfiles folder structure within the source code. Currently, the source code is configured for use with the OpenTroller DX1. To configure BrewTroller for another device type simply locate the HWProfile.h file for your target device in the HWProfiles folder and replace the HWProfile.h file in the root folder of the BrewTroller firmware.
The long-term goal for this project is to eliminate the need to configure and compile source code entirely. There are however a few options that are currently only available if enabled in the source prior to uploading. These options are configured in the Config.h file of the source code.
BrewTroller defaults to Imperial units (F/Gallons/Pounds). If you wish to use with Metric units you must uncomment the //#define USEMETRIC line by removing the proceeding '//':
#define USEMETRIC
This option dynamically alters the HLT setpoint based on the mash setpoint and error. Error refers to the difference between the actual temperature and setpoint.
By default, an alarm condition will cause the configured alarm output to be activated constantly. This option causes the alarm output to be modulated or pulsed instead.
This branch of BrewTroller is designed to be used with a customized version of the Arduino 1.0.5-R2 development environment. The official Arduino IDE has been customized to support the ATMEGA1284P microcontroller used by BrewTroller/OpenTroller devices and also includes libraries not included with Arduino that BrewTroller requires.
The custom IDE is available for both Windows and Mac systems:
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Make sure the target device is connected via USB to the system being used to upload the firmware.
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Launch the customized Arduino IDE.
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Select ATMEGA1284P Board from the Tools-Board menu
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Select the appropriate serial port for your target device from the Tools-Serial Port menu
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Click the upload button → or select Upload from the File menu
BrewTroller boots to the Home Screen displaying the firmware version. An unlock icon in the upper right corner of the screen indicates that the user interface (UI) is unlocked and the encoder can be used to switch between logical screens. Clicking the encoder will lock the user interface on the active screen causing the encoder input to be sent to the screen. A click held for one second or longer will unlock the user interface.
The BrewTroller firmware must be configured for your specific brewing system once it has been loaded to the target device.
Navigate to and lock the Home Screen. Click the encoder to launch the Main Menu. Select System Setup.
When the Boil Kettle output uses PWM this setting defines the temperature at which the Auto Boil logic should switch from full power to Boil Power.
When the Boil Kettle output uses PWM this setting defines the power level needed to hold the boil once the boil temperature has been reached if Auto Boil logic is used.
This setting exposes the calculation factor used to determine the amount of liquor lost to evaporation during the boil. This is used to calculate recipe volumes.
This setting exposes the calculation factor used to determine the amount of volume grain will consume in the mash tun. This is used by the user interface to detect capacity issues with recipes.
This menu is used to assign specific temperature sensors to vessels/functions. Use the encoder to navigate between the available sensor functions:
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HLT: Hot Liquor Tank
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Mash: Mash Tun
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Kettle: Boil Kettle
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H2O In: Water input temperature displayed on Chill screen
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H2O Out: Water output temperature displayed on Chill screen
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Wort Out: Wort output temperature displayed on Chill screen (typically used with counterflow chiller)
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AUX 1: User-defined sensor displayed on AUX screen
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AUX 2: User-defined sensor displayed on AUX screen
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AUX 3: User-defined sensor displayed on AUX screen
Click the encoder for access to the following menu options:
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Scan Bus: Scan the 1-Wire bus for an attached sensor that has not been previously assigned to a function
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Delete Address: Clear the assigned sensor address
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Clone Address: Copy the address from another vessel/function allowing a single sensor to be used for multiple functions
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Cancel: Return to vessel/function selection
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Exit: Exit Temperature Sensor menu
Note: It is recommended to attach a single sensor to the bus and assign its function. Then add a second sensor and assign it’s function. Repeat until all sensors have been detected and assigned. If multiple unassigned sensors are connected to the bus it will be more difficult to determine which sensor was found during a scan.