@mborgerson - Looks good - with edits noted in p#24
Overnight SD card filled - datalogger lib stops near end of Disk - again using 15.4MB PSRAM:
Code:
Warning, all data on the card will be erased.
Enter 'Y' to continue: 
Card size:   29.723  GiB (GiB = 2^30 bytes)
Card will be formated exFAT
Writing FAT .................................
Writing upcase table
Writing root
Format done

Card Type is exFAT
File system initialization done.
RTC has set the system time

Starting Logger.

File name is:  <LOG_0313.bin>
Pre-allocating 1GB file space 
Allocation succeeded.

Opened  File LOG_0313.bin
 
   4.345,   Records:   1086250   Overflows:    0
   9.480,   Records:   2370000   Overflows:    0
  14.220,   Records:   3555000   Overflows:    0
…
7963.990,   Records:1990997500   Overflows:    0
7969.520,   Records:1992380000   Overflows:    0
Halting logging.  Getting near end of SD Card.

Stopping Logger.
Logger Status:

MBytes Written: 30410.35   SdCard free space:     9.78 MBytes
Collection time: 7972 seconds
Max Collection delay: 1 microseconds
Average Write Time: 285.946 milliseconds
Maximum Write Time: 809.916 milliseconds

Verifying last file

Recnum: 1000000
Recnum: 2000000
…
Recnum: 915000000
Recnum: 916000000
…
Recnum: 1013000000
Recnum: 1014000000
…  
Recnum: 1989000000
Recnum: 1990000000
Recnum: 1991000000
Recnum: 1992000000
End of file playback.

Verification errors:  0
Verification complete