SD logging was introduced first in firmware version `202201` and officially supports Teensy based units only (Eg Dropbear). Support for additional logging options is intended to be added in future firmware releases.
Whilst not required, logging can be combined with a Real Time Clock (RTC)
The size of the log file will depend on the duration and the logging speed that is selected. The table below gives an approximation of the filesize that can be expected for various scenarios
> Note that logs are split into 10MB files. Once the log file reaches 10MB, a new file will be created and the logging continued. Except for the overall SD card size, there is no limit to the number (and hence duration) of the SD logs