RoastLogger Updates

This is where I will announce the most recent version of RoastLogger and list the version information advising the changes made:

Version 1.9.1 17/6/2013 including SerialDMMReader version 0.7 and LanguageEditor version 1.2

This update only affects language translation. Unless you are interested in language translation you do not need to download this update.

The RoastLogger and SerialDMMReader have been updated to internationalize more strings, that is to offer more strings for translation. In the previous revision I used a wizard in my IDE to extract all the strings for translation and it seems to have missed a random selection of strings for some unfathomable reason.
The update of the LanguageEditor involves a minor change to ensure that, if users extract the default language file from the jar, they can not overwrite any previous translation in the selected language.

Version 1.9 14/6/2013

Added multi-language capability to the RoastLogger and the included SerialDMMReader.

Added a language editor to the RoastLogger distribution. The language editor is intended to assist users in extracting language files from the relevant jar files, editing the files by adding a translation for a new language, inserting the resulting language files back into the relevant jar files and testing the result by running the RoastLogger. The language editor provides guidance on each of these steps to make the process as painless as possible.

This allows users to translate their copy for their own use and, hopefully to send a copy of the translated files to me for inclusion in future distributions of the RoastLogger.

In order to keep the effort required for translation to a minimum only the key text on displayed forms and the relevant tooltip text is offered for translation.

To use the editor, download and install version 1.9 or above of the RoastLogger, ensure that the RoastLogger is not running, open the LanguageEditor folder and double click the RoastLogger-LanguageEditor.jar then follow the instructions the editor provides.

Version 1.8.3 18/5/2013

Changed the action of the chart tab roast stage marker button. This button can now be used to mark load beans which starts logging and charting. At the end of a roast (after eject beans has been clicked) the button is disabled. Once you save or clear the log from the previous roast the button is enabled again allowing the next roast to be started from the chart tab. Even when this button is disabled a roast can always be started by the log tab load beans button. In this case if the previous log has not been saved it will be auto saved to the last used location and a note added to the notes tab to advise the file name and path used.
Changed the action of the logger tab save log button. This button now both saves the current log and clears the log and chart ready for the next roast. Previously it was necessary to click both the save log and clear log buttons to prepare for the next roast. This change avoids the need for users to remember to click both buttons to prepare for the next roast. The saved log can always be reloaded via the template tab if you need to view it after saving.
Help file updated accordingly.

Version 1.8.2 13/5/2013

Minor change to ArduinoController startup/reset code to fix an issue which only affects the following specific case:

User stops and restarts the controller mid roast with either the fan or heater slider set to exactly 50%. In this specific case only on restarting the slider would show the correct setting but the Arduino would be set to 0.

Corrected copyright symbol in roast logs.
Updated the help file to include new menu option.

Version 1.8.1 21/4/2013

Alarm tab:

Disabled row sorting in the alarm tables as this can cause confusion. Sorting is not necessary as alarms are performed in the correct order regardless of their position in the table.
Fixed issue which, in some circumstances, could stop the "Enable alarms" check box state being restored correctly on startup.
Updated help file to include information on the action of the alarm table check boxes.

Options Menu:

Changed the default setting (the initial setting used on a new install) of "Show RoR gradients" to checked and "Force windows size/position on start" to unchecked.

Version 1.8 20/4/2013

Alarms tab:

Now allows up to 16 separate alarms to be set, 8 to be triggered when a set temperature is reached on T1 (BT) and 8 to be triggered a set number of seconds after first crack starts.
An "Enable alarms" check box has been added so that all alarms can be enabled or disabled together.
All alarms now work with all inputs so they can be used with the Arduino Controller if desired. Unless Arduino Controller users specifically want this it is suggested they uncheck the "Enable alarms" check box.

Chart:

Increased height of current roast chart marker arrows to provide more clearance from curves. Users may need to increase chart axis maximum temperature settings to allow more headroom for markers.
Changed the curve smoothing characteristics.
Added a new menu option to use an alternate chart renderer which applies anti-aliasing to curves. This renderer also uses less smoothing.
Added a menu option to show a spinner in the chart to allow the current roast line thickness to be set in several steps.
It is suggested users try the various combinations of line thickness and anti-aliasing/smoothing to determine what works best for them.
Once you have decided what works best for you the spinner can be hidden by unchecking Menu Options | Show line thickness spinner in chart.
As with previous versions only the chart curves are smoothed. The raw (unsmoothed) data is displayed in the log, all
temperature displays, tables, chart markers etc.

Arduino Controller:

Heater and fan sliders now show the initial % setting as soon as a connection to the TC4/Arduino is established.

Help file:

Updated in line with the above.

Version 1.7.7 6/12/2012

Arduino Controller:

Fixed issue which stopped users Actions menu selection "Always save settings to log" from saving/restoring correctly between sessions.
Fixed typo in Actions menu.

Version 1.7.6 - 30/10/2012

Arduino Controller:

Fixed a bug which, in some circumstances, prevented the loading of action table settings from a template.
Removed the serial tab as it is no longer required.
Rearranged the menus for clarity on which apply to the Action Tables an which to the PID.
Added an experimental PID to test the suitability of PID control of small coffee roasters. When the PID is off the action tables control the roast as in previous versions of the RoastLogger. If the user turns the PID on then all action tables are used as before except that, after the beans are loaded, the action table settings for heater power will be ignored and the PID will be in control of the heater power. The PID can be set to use bean temperature, environment temperature or RoR on bean temperature as the control variable. A PID settings table is provided to allow setpoints to be set in up to 30 segments. Each segment runs for the set number of seconds. When a segment is entered any setting in the "Setpoint" column is immediately applied and the adjacent checkbox checked to show that the segment is now active. If the "Ramp to" column has a setting then the setpoint is ramped in a straight line from the previous setting to achieve the "Ramp to" setting by the end of the segment.
Added an experimental PID auto tuner. It calculates suggested tuning parameters using the standard relay method which is general purpose, not specific to coffee roasters. Better settings will be found by manual tuning but the auto tuner suggestions may be useful as a starting point.

The experimental PID and auto tuner are not currently documented in the RoastLogger help file or other documentation. Please see the relevant post on TMC and these notes for initial information.

Version 1.7.5 - 13/10/2012

1. RoastLogger

Added an option which, when logging, allows the user to skip remaining roast stages and immediately mark "beans ejected" and stop logging. This is achieved by pressing the "e" key at any time whilst logging. This allows users to use the space key to mark the stages in turn and the "e" key to skip to eject. Hopefully this will make it easier for people who regularly stop their roasts before second crack starts.

2. Arduino Controller

Added an option to limit the height of action tables to show 5 actions. This is to allow people with limited screen height, who do not use more than 5 actions, to have more tables open at one time.

3. RoastLogger-TC4 Arduino sketch

Updated sketch to release 2.0a. This fixes a minor issue in release 2.0 where the banner displayed on an LCD screen indicated the wrong version. Performance and operation is unaffected.

Version 1.7.4 - 17/6/2012

1. Arduino Controller

Added file menu option to clear all action table settings which stops all automatic actions. Provides a warning first suggesting saving settings before clearing. To return to automatic action just enter new, or reload saved, action settings.
Added file menu options to load default settings in Fahrenheit and Celsius
Load and save settings dialogs now set the default file mask to .acs in all operating systems.
Slider height reduced slightly and their appearance in recent versions of Ubuntu is now similar to Windows & OS X.
Changed default action table setting for the fan to 30%.
Now indicates when to load beans by an alert message as well as sounding an alarm

2. Chart

Added mild filtering and smoothing to the data used to draw the chart curves. The log, event markers and event table continue to display the raw data to ensure their accuracy. When a previous log is loaded as a template or as a roast log the data is again filtered and smoothed before display in the chart. This means that logs produced with earlier versions of RoastLogger can also be smoothed by this and future versions of RoastLogger.
Increased the thickness of lines used to draw the current roast curve. You can still use the menu option to show thicker lines but now both options are thicker than previously. Users updating to this version may wish to uncheck the Options menu "Use thick lines in chart for current roast".
Fixed an issue which caused the chart title to overwrite the top line of the chart grid in some operating systems.
Changed the "Set chart axes dialog" default maximum and minimum values for Celsius and Fahrenheit selections. Modified wording in dialog.

3. Alarms

Changed wording of Alarms dialog.
All alarm messages in message area now display for 20 seconds previously was 30 seconds.
Fixed an issue which stopped alarm sound and warning sound from playing in some versions of of Linux.

4. Font size menu

Fixed an issue which stopped font change menu action working correctly in some versions of Linux.

5. Help File

Updated in accordance with the above

Version 1.7.3 - 19/5/2012

The Arduino Controller has been updated as follows:

Changed Arduino Controller heater and fan sliders to snap to the nearest 5%
Cursor keys now have the same action in all operating systems and move the focused slider in 5% steps
Action table settings can be any value between 0% and 100% but are rounded to nearest 5% before the action is applied
Added new command to advise an Arduino/TC4C when the beans are loaded
Improved robustness of serial communication with an Arduino

The RoastLogger has been updated as follows:

Modified OCR engine to accept unusual 6 and 9 digits as valid digits. A user with a Coffee-Tech Solar 2 Kg roaster advised that it has a display where the lower horizontal segment of the 9 digit and top horizontal segment of 6 digit is not turned on. These are now accepted by the RoastLogger.

Updated help file accordingly.

Version 1.7.2 - 26/4/2012

Further modifications to the Arduino Controller for TC4 users as follows:

Added menu options to save and load (restore) all action table settings. A number of options are provided depending on user requirements as follows:

The controller automatically saves all action table settings before closing and restores them on startup. If you do not wish to use different settings this is all you need.
Users can save and load all action table settings to/from any file so any number of different sets of settings can be maintained. These could be for different beans or for different ambient temperatures etc.
Users can select a menu option to save a copy of all the action table settings to every future roast log. If this is checked then the settings will be appended to the end of all logs when the the eject beans button is clicked. A further option allows users to load (restore) the table settings from the currently loaded template. This allows every log to be used as a template including it's own set of action table settings. It also allows users to see in the log exactly what settings were used for each roast.

Changed the logic associated with setting up for a new roast. Previously whenever the Arduino Controller was started it automatically set up for a new roast. Now it only takes this action if a roast is not underway (between load beans and eject beans). This is so that the controller can attempt to recover from the user stopping and starting the controller mid roast. This is not recommended and not guaranteed but it makes it's best efforts to continue where it left off. The serialDMMReader could already recover from stop/start mid roast as it only reads data from the Arduino and does not need to know what stage the roast is at, what actions are complete, etc. The closing and reopening action closes and reopens the serial port and driver so this drastic action can help recover from a glitch in serial communications (possibly due to RFI, electrical problems, bad connections etc.) without affecting the progress of the roast or logging and charting.
Cosmetic changes to the action table pane as follows:

To stop Windows painting it according to the theme in use. Now it is more in keeping with the rest of the program.
To stop it scrolling which was wasting horizontal space. Now requires the user to increase the height of the controller window sufficiently to show the contents of any open tables.

Updated help file.

Version 1.7.1 - 21/4/2012

Major revision of the Arduino Controller to simplify the interface whilst providing much more comprehensive controls for a heater and fan. This is to make better use of the facilities provided by a TC4. The major changes are:

Major revision to the layout which now allows the following manual controls:

Users can define up to 10 temperature on T1 and define heater and/or fan settings to be applied when the temperatures are reached.
Users can define up to 10 times in seconds past first crack and define heater and/or fan settings to be applied when the times are reached.
Users can define the heater and fan settings to be applied when the Arduino Controller is started or reset.
Users can define the desired drop in temperature and, if set, the Controller will auto detect drop in and start logging/charting.
Other cosmetic changes to the look of the controller.

Removed all PID controls to simplify the interface (despite the above additions) and allow the controller to be narrower leaving more room for the chart. I may provide new PID controls in the future but for now RoastLogger version 1.7.0 will be the last version to include PID controls. The existing Arduino sketches work with the new Arduino Controller but the PID is disabled. If anyone experimenting with the PID controls wants a copy of version 1.7.0 please email me.

Added menu option "Force window size/position on start" so users can choose whether to allow the Operating system to ignore the RoastLoggers request to place them or to force the size and position to the last used.
Updated the help file to incorporate the above.

Version 1.7.0 - 10/4/2012 with updated SerialDMMReader to version 0.55

I have recently installed Ubuntu 12.04 LTS to see how the RoastLogger looks on a recent distribution. I found that it ignores the font sizes requested by the RoastLogger and uses rather large fonts which are not ideal for some of the RoastLogger tabs. Also Sun/Oracle Java is being removed from Ubuntu distributions due to licence issues. OpenJDK Java is now distributed with Ubuntu. This is not entirely compatible with the reference Sun/Oracle version but it is now more difficult for users to install Sun/Oracle Java on Ubuntu.

Whilst the RoastLogger runs and can be used despite these issues I have made some changes so that it is more user friendly on Ubuntu/OpenJDK as follows:

Added save and restore of main window size and position (for both the RoastLogger and the SerialDMMReader) on closing/opening the program. This was done automatically by Sun/Oracle Java on most Windows and OS X machines but is not done by OpenJDK on some Linux distributions. The RoastLogger now tries to restore it's size and position before the main window is displayed, if the OS or OpenJDK reset the size and position after this the RoastLogger tries again to restore them once the main window is open.
The fonts used by the RoastLogger have been a compromise between what works best between different operating systems. Recent versions of Ubuntu (and probably other distributions) ignore the font sizes requested by the RoastLoggers and use rather large fonts which do not work well with some of the RoastLogger tabs. To improve the situation the following changes have been made:

Added menu options to increase/decrease the font sizes used throughout the program.
Reduced the default font size used in the Chart event table.
Reduced the default font used in the Arduino Controller.

Updated the help file to cover changing font sizes.

Version 1.6.9 - 9/4/2012 with updated SerialDMMReader to version 0.54

Minor update to the SerialDMMReader to fix an issue which could result in a non-critical error being reported on closing the SerialDMMReader in some operating systems.
Minor update to the RoastLogger to fix an issue only affecting OpenJDK users where a non-critical exception occurred when closing the help about dialog. This was due to OpenJDK not being as compatible with Sun/Oracle Java as we would wish.

Version 1.6.8 - 7/4/2012

Fixed a minor bug introduced in the previous version 1.6.7 that would only affect TC4 users using fan speed control. The bug stopped the fan speed setting, displayed in the Arduino Controller, updating correctly.
Completely rewritten RoR temperature gradient calculation used when not reading from a TC4 (If you connect a TC4 it's RoR data is used). These RoR calculations are only really meaningful for input devices providing temperature information to tenths of a degree. To display the RoR data the RoastLogger menu option "Show RoR (temperature gradients)" must be checked.
Resolved an incompatibility issue that, under Linux only, stopped the RoastLogger recognising an Arduino Uno. The udev rule already included in the distribution has been updated to resolve this issue. See the troubleshooting section for details of how to use this.

Version 1.6.7 - 3/4/2012

Minor update for TC4 users. This update utilises the TC4 RoR (temperature gradients) data when a TC4 is used as the input device. To display the RoR data the menu option "Show RoR (temperature gradients)" must be checked. The TC4 RoR data can be used when connected via the Arduino Controller or the SerialDMMReader.
Minor updates to the Arduino sketches as follows:

Arduino sketches for Max6675 and Max 38155 updated to limit serial output to one decimal place.
RoastLoggerTC4 sketch updated to change order of serial output in logger method to improve responsiveness when RoR data is displayed by RoastLogger.

Updated the help file.
Updated the image included in the distribution that shows an example setup for OCR (ExampleSetupForOCR.jpg).

Version 1.6.6 - 13/3/2012 with updated SerialDMMReader to version 0.52

This is an update to the SerialDMMReader only to fix an internationalisation issue which prevented it working correctly in some regions/locals that do not use the dot as the default decimal separator.

Version 1.6.6 - 13/3/2012

Updated the Arduino sketches as follows:

RoastLoggerTC4 sketch updated by Jim Gallt to provide PWM control of both heater and fan and to allow different thermocouple types on each of 2 inputs.
Remaining sketches updated to provide a consistent way for the user to choose Celsius or Fahrenheit output.

Updated the Arduino Controller as follows:

Added fan speed control for use with the modified RoastLoggerTC4 sketch.
Now automatically selects last used serial port if it exists in port list.
Modified to ensure better compatibility with the Arduino Uno startup characteristics.
Stopping/starting the Arduino Controller now automatically resets it if necessary.
Previously the Arduino Controller converted Celsius input to Fahrenheit if the chart axis was set to Fahrenheit. Now the users choice of Celsius or Fahrenheit is set in the Arduino sketch before compiling/uploading and is not converted by the Controller.

Updated the SerialDMMReader to version 0.51 as follows:

Cosmetic changes to SerialDMMReader to improve layout when running under Windows OS.

Version 1.6.5 - 13/2/2012

Updated the SerialDMMReader to version 0.50 as follows:

Fixed a problem reading a Voltcraft K204 which resulted in failure to read the device after some time. This problem may also have affected the Center 304/309.

The last user selection of USB HID or Serial devices on the DMM tab is now saved and restored between sessions.
The readme file on interfacing to a user supplied device or application updated.

Version 1.6.4 - 8/2/2012

Updated the SerialDMMReader to version 0.49 as follows:

Added ability to read an Arduino to provide a simple interface for those who just want to read one or two temperature inputs from an Arduino via a simpler interface than the Arduino Controller.
Now reads Center 309 / Voltcraft K204 once every two seconds. Previously readings were once per second.
Debug output now sent to the RoastLogger DMM tab connection status messages area.

Updated Arduino Controller to provide more robust communication with the Arduino.

Version 1.6.3 - 7/2/2012

The SerialDMMReader now saves data on the last used device and port on exit and restores them on startup.
An option has been added to the SerialDMMReader to auto start on each startup using the above last used data.
The SerialDMMReader and Arduino Controller are now compatible with 64 bit versions of Java on Windows.

Version 1.6.2 - 1/2/2012

Increased Arduino controller temperature spinner maximum values to 600 to be suitable for users working in Fahrenheit.
Increased Arduino controller time after FC spinner maximum values to 360 seconds.
Added tooltips to Arduino controller.
Update help file to cover use of the Arduino Controller manual settings.
Fixed a SerialDMMReader internationalisation issue which prevented it passing data to the RoastLogger unless the system was set to use the dot decimal separator. It now ignores the system setting and uses the dot separator.
Fixed a SerialDMMReader issue that, in some circumstances, could cause a non-critical error to be reported.
Added Arduino sketches to downloads page for the following hardware.

Arduino / TC4
Arduino / MAX 6675 thermocouple interface chips (sketch includes experimental PID control).
Arduino / MAX 31855 thermocouple interface chips (sketch includes experimental PID control).

Version 1.6.1 - 18/1/2012

Update to improve error handling and cosmetic issues for the SerialDMMReader.
SerialDMMReader now saves window state including size and position on closing.
Improved error handling of serial device disconnection (unplugging) during communication.

Version 1.6 - 16/1/2012

Added support for reading some serial devices via a new serial DMM reader. Other devices may be added in future.
Combined the two DMM tabs into one tab and added radio buttons to select either USB HID devices or serial devices.
Modified the temperature alarm to deactivate it for the first 60 seconds after drop in. This is to allow the setting of an alarm temperature below the drop in temperature.
Fixed an issue on the Arduino Controller that could prevent correct automatic reconnection after stopping and restarting the controller.
Modified the Arduino Controller to discard previous roast serial communication data on starting a new roast.
Help and readme files have been updated.

Version 1.5 - 6/10/2011

Updated the HID readers for OSX and Windows to version 1.5 to read from both the original and new versions of the Tenma 72-7712 and Uni_T UT322 in addition to the Victor 86 B/C.
Added a filter on all DMM inputs to the RoastLogger to assist in filtering out occasional spurious readings due to RFI or bad USB connections. The filter ignores any one or two consecutive readings that are more than 2 degrees away from the last good reading. Readings are sent approximately 2 per second so this would equate to a temperature change greater than 2 degrees per second. In the extreme case where temperatures are changing faster than 2 degrees per second the RoastLogger display will now update every 1.5 seconds (after skipping two readings) instead of the usual 0.5 seconds.
Changed default action for a new installation from showing temperature gradients to hiding them.

Version 1.4.4 - 26/5/2011

Previously the roast event tables in the chart and the templates tab allowed column sorting and/or rearranging. These actions have now been disabled to avoid inadvertent rearranging when users click on a column.
Previously the banner defaulted to the top left of screen now the last used location is saved / restored between sessions.
Previously the Arduino Controller defaulted to the top left of screen now the last used location is saved / restored between sessions.
Previously the initial startup of a new installation defaulted to showing the edge/segment dialog now it defaults to hiding it.

Version 1.4.3 - 27/4/2011

The Arduino Controller now works under all the operating systems that the RoastLogger works under, i.e. 32 or 64 bit versions of Windows (XP, Vista or Windows 7), Linux and OS X(64 bit intel only for OS X). Prior to this version it did not work under Linux.
Updated the help file and help about box accordingly.

Version 1.4.2 - 12/4/2011

Added a menu option to show a banner displaying the temperatures, gradients and elapsed time in large font. The banner can be repositioned and resized to suit the users needs.
Added a popup reset button to Arduino Controller to reset the controller between roasts. This is necessary to allow the controller to start logging automatically when it detects the beans being loaded.
Changed order of panels in Arduino controller to group all manual controls before PID controls.
Updated the Windows HID reader to version 1.4 to fix an issue which slowed readings unacceptably when reading from two Victor 86 multimeters in Windows.
Fixed a minor issue that could result in the T2 temperature gradient being displayed in the incorrect colour.
Updated help file.

Version 1.4 - 15/3/2011

Added an Arduino Controller to provide the facility to communicate with and optionally control a coffee roaster via an Arduino. The Roast Logger can log and chart two temperature inputs from the Arduino and also optionally control electrical heater power either manually or via a software PID running on the Arduino. The Arduino requires a suitable sketch (software) to communicate with the Roast Logger. This is available free to anyone who requests it by email (see the feedback section for my email address) and may be used as is or as an example of how to communicate with the Roast Logger to form the basis of your own controller software.
Changed the colour of the template curves to make it easier to distinguish them from the current roast.
Added a menu option to draw the current roast curves thicker to make it easier to distinguish them from the template curves.
Added roast stage markers for end of roast (beans ejected).
Limited roast stage marker temperature display to one decimal place.
Added a menu option to display a table of roast stage data in the chart.

Version 1.3 - 11/3/2011

Changed the roast stage markers to display the time and temperature for the indicated stage.
Added the display of roast stage markers, also with time and temperature information, for any loaded template for comparison with the current roast.
The roast stage markers can be shown or hidden at any time using a menu option.
Added auto save of any previous unsaved roast log when a new log is started. After autosaving the previous log a new log is created and started for the new roast. A note is added to the notes tab to advise the location of the autosaved log which will be the last location you saved a log to or, if that does not exist, your home folder. This ensures that only one roast is included in each log whilst not delaying the start of logging on the new roast.
Added two new buttons to the Templates tab to clear any loaded template and to clear any roast log.
Logger tab rearranged and the clear log button now also clears the associated curve from the chart without asking.
The clear log button is now disabled whilst logging and when the log has not changed.
Added tooltips to the alarms tab to make it clear that alarms can be disabled by clearing the alarm message.
Updated the HID readers for OS X and Windows to ver 1.3.1 to correct some typos in the messages.
A number of minor cosmetic changes.

Version 1.2.1 - 22/2/2011

Fixed a minor bug that only affected reading from a Tenma or Uni-T digital thermometer in degrees Fahrenheit. Temperatures above 399.9 F were not read correctly.

Version 1.2 - 21/2/2011

Added ability to read directly from additional devices for OS X and Windows, Linux is still limited to reading from the Victor 86 B and 86 C only.
For OS X and Windows up to two of the following can be used in any mix:

Victor 86 B and 86 C
Tenma 72-7712
Uni-T UT322
May also work with Tenma 72-7715 and Uni-T UT325 but these are not available to test

A number of minor cosmetic improvements.
Updated help file with more help for optical character recognition and for new devices.

Version 1.1 - 17/1/2011

This is a significant update to make it much easier to set up for reading from webcams and much more robust and less finicky about reflections and lighting changes in the image. To achieve this I have completely rewritten the processing from the captured image to the black and white image for optical character recognition.
Help file updated accordingly.
Distribution notes updated accordingly.

Version 1.0 - 31/3/2010

Fixed a minor issue which prevented the roast stage markers from displaying during a roast where a digital multimeter or user hardware was providing input to T1.
As no further issues have been reported the version has been changed to 1.0.

Version 0.60 - 7/3/2010

Added facility to read from up to two multimeters simultaneously. This means that the logger can now read either or both of it's temperature inputs from a multimeter or webcam.
Provided a standard interface to read either or both temperature inputs from a user supplied application/hardware.
Added facility to swap the device connected to each temperature input in the case of two simultaneous temperature inputs.
Added the full path to the last opened roast template to the properties file to allow a user supplied application to access this information.
Modified tab layout to accommodate the above.
Help file updated accordingly
Distribution notes updated accordingly.
Added notes to the distribution to assist in connecting a user supplied application/hardware to the RoastLogger.

Version 0.58 - 5/3/2010

Added checkbox to allow users to stop the log scrolling to the latest reading. This is to facilitate writing notes to the log whilst logging is in progress
All HID readers updated to version 1.1. They now read data from up to two Victor 86 multimeters simultaneously (previously only one could be read). Please note that the roast logger has not been updated to take advantage of this yet if 2 dmm's are connected it will only read from the first ignoring the second.
Increased timeout in Linux HID readers as the Linux HID manager can be a little slow occasionally.
Changed threshold default value for LED's from 235 to 225

Version 0.57 - 24/2/2010

Tidied up the layout of various tabs to improve the look of the program in Linux.

Version 0.56 - 23/2/2010

Added the facility to read from a Victor 86 B multimeter in addition to the Victor 86 C multimeter. The Victor 86 B has the advantage of reading temperatures to one decimal place but only displays in Celsius. The 86 C displays in Celsius or Fahrenheit but only to whole degrees.
Help file updated to incorporate all changes since version 0.5

Version 0.55 - 17/2/2010

Added a general notes tab to automatically load and save any notes the user wishes. This is for general notes, the roast log should be used for notes specific to a particular roast.
Revised temperature gradient calculation to attempt to smooth results where temperatures are measured to decimal fractions of a degree. Now only updates gradient when temperature changes by 0.5 degrees or more.
Loading an existing roast log now resets log dirty flag. This ensures that the user is not asked to save the log on exit unless the user has changed the log subsequent to loading.
Minor changes to the multimeter decoding algorithm.
Modified various titles including the status message titles.

Version 0.54 - 25/1/2010

Modified algorithm to decode the meter readings from the Victor 86 multimeter. This has no consequence for users.

Version 0.53 - 19/1/2010

Fixed bug which stopped the chart updating correctly when a previous log with temperatures saved as decimal values was reloaded.
Fixed issue which stopped the USB HID reader for OSX working correctly with OS X 10.5. Now works with 10.5 or above.
Added a separate USB HID reader for 64 bit versions of Linux. This is automatically selected if you are running a 64 bit version of Linux.

Version 0.51 - 17/1/2010

Minor update to remove leading zeros from the DMM output. This is for consistency with the output from the OCR tabs and does not affect the operation of the program.

Version 0.5 - 14/1/2010

Added the ability to read temperature data directly (via USB cable) from a Victor 86 C multimeter in addition to reading data using optical character recognition from a webcam image of a roasters display.
Changed name of the program to RoastLogger as it is not now exclusively based on OCR
Added option to alarm on OCR/DMM2 temperature rather than OCR1 temperature
Added menu option to show the edge/segment detection dialog each startup
A number of changes to allow users to overwrite versions of this program with later versions without losing their settings and any changes they have made to the log template
Help file updated to incorporate the above

Version 0.42 - 2/1/10

Added option to display temperature gradient(s) in degrees per minute. Value shown black if positive and red if negative (falling).
Tooltip on menu View | edge detection - changed to advise to use this dialog during logging to warn of any image processing problems.
Tooltip added for menu Options | Set OCR Parameters.
Help file updated to incorporate the above.

Version 0.41 - 24/10/09

Added option to mirror the webcam image. This is necessary when using a webcam viewer that insists on providing a mirror image such as Photo Booth in OSX.
Changed label of "flip" check boxes to "rotate" to avoid confusion with the new "mirror" check boxes
Tooltips on template tab changed
Help file updated to cover the above

Version 0.40 - 7/10/09

Initial beta release for testing