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I've figured out how to fix it!

Changing
if (!card.init(SPI_HALF_SPEED, chipSelect)) by
if (!card.init(SPI_QUARTER_SPEED, chipSelect))

Found more informations there

Thank you anyway :)

Hi,
I can see card type, it's just after :


if (!volume.init(card)) {
display.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
...

Hello,

I'm actually trying to automate a little my brewing process with a Teensy 3.2.

I was using an arduino nano but it wasnt powerfull enough to use an oled screen and a micro SD card reader....