Version 2.3.1

This release:

• Additional license information included for all utilized libraries.
• Repository prepared for use with Zenodo to register a DOI.

Version 2.3.0

This release is primarily focused on improvements to logging and sleep alarm functionality:

• Integrated alarm modes directly into logging and sleep functions
• Added minutes functionality to daily alarms
• Added a check to ensure RTC synchronization only occurs once daily
• Avoided unnecessary reinitialization of devices when in continuous mode
• Updated variable names to a consistent style
• Updated relevant display and debugging code
• Improved code commenting

Version 2.2.1

This release:

• Code configured for Arctic Bay sea ice measurements
• Rolling operation mode: 10 minutes ON/20 minutes OFF

Version 2.2.0

This release:

• Code prepared for deployments on Lowell Glacier, Yukon during the 2023 field expeditions
• Improved OLED display messages
• Updated to SparkFun u-blox GNSS library v3
• Improved variable naming conventions and code commenting
• Removed archived v1.0 files to reduce repository size

Version 2.1.2

This release:

• Code prepared for deployments on Lowell Glacier, Yukon during the September 2022 field expedition
• Improved OLED display messages

Version 2.1.1

This release:

• Code prepared for deployments on Sydkap Glacier, Ellesmere Island, Nunavut during the 2022 field expedition
• Improved OLED display messages
• Improved code commenting

Version 2.1.0

This release:

• Code prepared for deployments on Ellesmere Island, Nunavut during the 2022 field expedition
• Debugging and monitoring information can now be displayed on a SparkFun Qwiic OLED Display (SSD1306)
• 12 V battery voltage can now be measured using the onboard 10/1 MOhm resistor divider circuit
• The system can now be configured in a continuous (24-hour) logging mode, which creates a new daily log file
• Includes improved dynamic log and debug file naming, enhanced debugging information and updated documentation

Version 2.0.4

This release:

• Code prepared for deployments on Devon Island, Nunavut during the 2021 Amundsen Expedition

Version 2.0.3

This release:

• Code prepared for Lowell Glacier deployments in Yukon, Canada
• Improved blink patterns for easier interpretation of system status
• Improved functionality to recover from u-blox initialization failure

Version 2.0.2

This release:

• Includes KiCad project files for custom PCB
• Minor changes to RTC alarms
• Code reliability confirmed over long-duration testing
• Standardized file names