Can't get SD card working in LCD and SD module

Other Hardware Storage
1

I can't seem to get the SD card to work in this module (I've tried SD and SDFat), although the LCD display is working fine :

Below is my wiring :

Module (ST7735R) - Arduino (Nano V 3.0)

VCC - 5v
GND - GND
SCL - 13
SDA - 11
DC - 9
RES - 8
CS - 10
----- SD card pins below
MISO - 12
SCLK - 13
MOSI - 11
CS - 4

I am thinking it may be due to having 2 SPI devices wired together? (pins 13 and 11 are shared for connecting the LCD and SD card pins). I tried it with 3.3v and no change. Any help would be appreciated.

2

Have you got Pin 10 forced HIGH when working with the SD card? If Pin 10 is LOW that will enable the SPI interface on the LCD.

3

Thanks, I tested that with no luck!

Could the fact that I'm using the ICSP pins for MISO, MOSI and SCK cause a problem? The LCD works fine using them.

Also, I've tried the SD card in another micro SD module wired up to my Uno, and it was read successfully.

When I get around to it I'll try hooking up only the SD pins, and leaving the LCD pins to see if that does anything.

Update :

Tried again with just the SD pins and no result. Checked the soldering on the module too, and as far as I can tell (without the looking at the datasheet) the SD seems connected. Looked at the datasheet and it wasn't much use.

I might just use a separate SD module, but that isn't ideal. If I ever buy another one of these I'll see if the SD part of this LCD/SD module is defective.