hello everyone!
i am working with an arduino uno wifi r2 board and i need to connect an sd reader to it.
the connection diagram i am using is as follows:
GND - GND
VCC - 5V (I have also tried 3.3V)
MISO - 12
MOSI -11
SCK -13
CS - 10 (I also tried pin 4)
my problem is that if i try to run the example scketch 'CardInfo.ino', the sd card is never found...
can anyone help me?
thanks a lot!
On the UNO WiFi board, the SPI pins are not in the same place as the plain UNO board - i.e. not on 11, 12 & 13.
The only place the MOSI, MISO & SCK signals appear is on the 6 pin ICSP header. Here's a pinout from the MegaCoreX github page:
ok thank you very much!
would chipselect be what is referred to as 'SS' ??
I have tried connecting in this way but it still does not work
Ah, that's a lot better than the official Arduino version
okok, now it works thank you very much!
(I had left VCC - 3.3V instead of 5V)
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