Hi,
the wires length is about 20cm / 8 inches. I often get this problem also with SPI_HALF_SPEED.
The speed is currently not the big deal, I just try to get some data from the SD card.
The file SdInfo.h contains some constants for the SPI speed. Also with SPI_SIXTEENTH_SPEED I get errors...
Is the only way to get this work using short wires?
Best regards
Nils