January 26th, 2021

This is a bugfix release for Castor & Pollux's firmware, Gemini ♊️.

👉 Most users should download gemini-firmware-2021.1.26-release.uf2 👈

Please follow the firmware upgrade instructions in the user's guide to upgrade your device's firmware.

About the files

• The uf2 files can be installed using the firmware upgrade instructions in the user's guide.
• The elf files and are for testing & debugging and can be programmed using an appropriate debug probe.
• The release builds are built without debugging information.
• The debug builds are built with debugging information.

Build identifier

Each release of the firmware has a unique build ID. This ID can be seen when using the online settings editor and allows finding the exact firmware version on your device. The build IDs for this version are:

• 2021.1.26 (Release) on 01/26/2021 18:31 UTC with arm-none-eabi-gcc 10.2.1 [email protected]
• 2021.1.26 (Debug) on 01/26/2021 18:31 UTC with arm-none-eabi-gcc 10.2.1 [email protected]

Changes from 2021.1.23

Bugfixes:

• Fixed a bug where turning the pitch knobs all the way clockwise would cause the pitch to jump around.

Documentation:

• Added a section in the user guide on tuning the oscillators & how the pitch knobs are non-linear.

Other changes:

• The maximum LFO frequency was lowered to 5 Hz

Internal changes:

• Added Micro Trace Buffer
• Added SysEx monitoring functionality
• Calibration mode now has a distinct blue and pink LED pattern
• JLinkCommander now properly exits with a failure if programming fails
• Factory setup script now logs to a file