Configuration > planner > units
How about a selection screen for what gets recorded on the logging and an estimated time left on card ?
thats not realy possible. as there are to many variables with the dataflash.
1. packets being logged. and as what gets log change would make this incorrect. (devs change the format a bit.)
2. hz rate
3. size of dataflash
4. other preexisting logs.
I found how to find size of data log card
go to terminal
shows number of pages and pagesize.
Mine is 8192 and 512 which is 4 meg log card.