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Hello i'm trying to write on a sd card with the SDFileSystem library of Neil Thiessen but i receive always "writing and reading to sd card failed "
i've connected the Mosi with D11 , SCK with D13, Miso with D12 and CS with D4 and of course the pin 3 and 6 of the sd card to gnd and the pin 4 of the sd card to 3.3v i've tested some sd 128mb, 16gb and 4 gb but without success. do you have any idea/suggestion ? Thank you very much
sd card