Arduino Nano to SD Card Not working!!!!
I have been trying to get my Arduino Nano BLE Sense Rev 2.0 to work with the adafruit sd card breakout board.
I have followed the tutorial on their website, so I can confirm that the pins are connected properly just to be sure
5V on Nano -> 5V on sd card board
GND on Nano -> GND on sd card board
D13 on nano -> CLK on sd card board
D12 (MISO) on nano -> DO on sd card board
D11 (MOSI) on nano -> DI on sd card board
D9 on nano -> CS on sd card board
I ran the script for the adafruit tutorial which is the example script you can find in the IDE software, Examples -> SD -> CardInfo
I got the following output
22:54:25.793 -> Initializing SD card...initialization failed. Things to check:
22:54:27.893 -> * is a card inserted?
22:54:27.893 -> * is your wiring correct?
22:54:27.893 -> * did you change the chipSelect pin to match your shield or module?
I then decided to manually try and talk to the sd card, asked chatgpt for help on this.
Ran this script code.
Got the following output
23:23:23.192 -> CMD0 response = 0x0
So I am led to believe the arduino can communicate with my sd card???
The card is formatted in fat32 and I can access on my PC so that is not an issue.
I have attached pictures of my soldering if that would be an issue. I just don't know why this isn't working and I'm thinking about just buying new breakout boards.
Posted Jul 21, 2025, 6:29 AM UTC