Which Circuit is Best for SD_Card with ESP32
I have 3 circuits
My understanding is that all four SPI lines are push/pull, and therefore do not need pullup resistors, and would not benefit from them.
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IF you are not using any purchased SD module, then my opinion is the first schematic.
But it does not need the pull-up resistor.
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no i am not purchasing module i am making my own PCB . So you are saying it does not need Pull-up resistors ,are you referring to CS?
Yes that is what he is saying.
I use 10K pullups, also on CS. Don't know if that is strictly required, but that was what was on the module i used before and i copied that. That works.
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SD card 1.
Yes.