I've been trying to have 2 files to save data to on an SD card so I needed to create 2 .txt files. The library examples used test.txt and that worked for me, and on a couple occasions (with no edits to my code) other file names would work. Simply substituting a different name into the library code …

SD.open() will only work if the .txt has a specific name

PaperWarplane April 15, 2018, 6:48am 3

Thank you very much. This information solved my problem instantly.

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