I tried Arduino Uno and Mega2560. I use Card Reader module as shown on the attachment.
I’ve configured with: MOSI:11, MISO:12, SCK:13, and CS: 10 (also set as OUTPUT). (for Mega:51,50,52,53)
When I try to write files, even with the examples, it creates the file, but the content is CORRUPTED or UNREADABLE. So I can not open it afterwards or read from it.
Do you have the same problem? Have you already solved it?
Please give me some advice.