This is a starting point of the LuToC firmware. Project at https://hackaday.io/project/25934-lutoc-linear-time-code-smpte-ltc-generator

This software is CC0 licensed, public domain for commercial or non-commercial use. Credit and community feedback and contributions are certainly appreciated.

Hardware: This is written for the Sparkfun ESP32 Lora Gateway board with the Sparkfun RTC RV-8803 daughter board connected via a Qwiik connector.