Nano ESP32 Micro SD Card

Other Hardware Storage
1

Has anyone had any luck getting a Micro SD Card working on the Arduino Nano ESP32? I'm using pins as follows: SCK - D13, MISO - D12, MOSI - D11, CS - D10.

Wayne in NH

2

Please post an image\picture or link for the 'Micro SD Card' adapter you are using.

3

Post your code also

4

Here is the code (based on ESP32 SD example):

/* Test Arduino Nano ESP32 with Sparkfun Micro SD Card
 * Based on ESP32 SD_Test example
 * Connect the SD card to the following pins:
 *
 * SD Card | ESP32      MY NANO ESP32
 *    D2       -
 *    D3       SS       D3
 *    CMD      MOSI     D11
 *    VSS      GND
 *    VDD      3.3V
 *    CLK      SCK      D13
 *    VSS      GND
 *    D0       MISO     D12
 *    D1       -
 */
#include "SD.h"
void setup()
{
  Serial.begin(115200);
  delay(3000);
  if(!SD.begin(3)) {Serial.println("Card Mount Failed");return;}
  uint8_t cardType = SD.cardType();
  if(cardType == CARD_NONE){Serial.println("No SD card attached");return;}
  Serial.print("SD Card Type: "); Serial.println(cardType);
}
void loop(){}type or paste code here
5

Oh, and it fails on the begin call...

6

Post a wiring diagram, showing power and ground connections. Hand drawn is preferred.

7

Your code shows SD.begin(3), but your description says CS is on D10. Try
SD.begin(D10).

If that fails, please show us the diagram as suggested.

8

Just for what it's worth: I had similar problems and whatever I did, could not get the SD-Card working until I connected the board to the Nano VUSB (5 V) and everything was fine. Even though the spec of the board says that it operates between 3.2 and 5 V.