I can't get the sd card reader to work with the Arduino nano.
I've connected the adapter the following way:
GND - GND
+5V - VCC
D13 - SCK
D12 - MISO
D11 - MOSI
D10 - CS
I'm using the example code from the Arduino ide and I get:
Initializing SD card...initialization failed. Things to check:
How can I troubleshoot the card reader?
Welcome to the community 
Question, what SD card reader board are you using? If you are trying to use a "bare" SD card were you aware SD cards run at 3.3V?
Post your code. I know you are using an example but the examples are part of a library that has been added so I can't tell what library you are using.
John
/*
SD card test
This example shows how use the utility libraries on which the'
SD library is based in order to get info about your SD card.
Very useful for testing a card when you're not sure whether its working or not.
The circuit:
SD card attached to SPI bus as follows:
** MOSI - pin 11 on Arduino Uno/Duemilanove/Diecimila
** MISO - pin 12 on Arduino Uno/Duemilanove/Diecimila
** CLK - pin 13 on Arduino Uno/Duemilanove/Diecimila
** CS - depends on your SD card shield or module.
Pin 4 used here for consistency with other Arduino examples
created 28 Mar 2011
by Limor Fried
modified 9 Apr 2012
by Tom Igoe
*/
// include the SD library:
#include <SPI.h>
#include <SD.h>
// set up variables using the SD utility library functions:
Sd2Card card;
SdVolume volume;
SdFile root;
// change this to match your SD shield or module;
// Arduino Ethernet shield: pin 4
// Adafruit SD shields and modules: pin 10
// Sparkfun SD shield: pin 8
// MKRZero SD: SDCARD_SS_PIN
const int chipSelect = 10;
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("\nInitializing SD card...");
// we'll use the initialization code from the utility libraries
// since we're just testing if the card is working!
if (!card.init(SPI_HALF_SPEED, chipSelect)) {
Serial.println("initialization failed. Things to check:");
Serial.println("* is a card inserted?");
Serial.println("* is your wiring correct?");
Serial.println("* did you change the chipSelect pin to match your shield or module?");
while (1);
} else {
Serial.println("Wiring is correct and a card is present.");
}
// print the type of card
Serial.println();
Serial.print("Card type: ");
switch (card.type()) {
case SD_CARD_TYPE_SD1:
Serial.println("SD1");
break;
case SD_CARD_TYPE_SD2:
Serial.println("SD2");
break;
case SD_CARD_TYPE_SDHC:
Serial.println("SDHC");
break;
default:
Serial.println("Unknown");
}
// Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
if (!volume.init(card)) {
Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
while (1);
}
Serial.print("Clusters: ");
Serial.println(volume.clusterCount());
Serial.print("Blocks x Cluster: ");
Serial.println(volume.blocksPerCluster());
Serial.print("Total Blocks: ");
Serial.println(volume.blocksPerCluster() * volume.clusterCount());
Serial.println();
// print the type and size of the first FAT-type volume
uint32_t volumesize;
Serial.print("Volume type is: FAT");
Serial.println(volume.fatType(), DEC);
volumesize = volume.blocksPerCluster(); // clusters are collections of blocks
volumesize *= volume.clusterCount(); // we'll have a lot of clusters
volumesize /= 2; // SD card blocks are always 512 bytes (2 blocks are 1KB)
Serial.print("Volume size (Kb): ");
Serial.println(volumesize);
Serial.print("Volume size (Mb): ");
volumesize /= 1024;
Serial.println(volumesize);
Serial.print("Volume size (Gb): ");
Serial.println((float)volumesize / 1024.0);
Serial.println("\nFiles found on the card (name, date and size in bytes): ");
root.openRoot(volume);
// list all files in the card with date and size
root.ls(LS_R | LS_DATE | LS_SIZE);
}
void loop(void) {
}
And try a different type of SD card, some types dont work with Arduino.
What format is the SD card ?
So I've tried two different cards, one formatted with FAT16 and one with FAT 32,
I used this to format the cards SD Memory Card Formatter | SD Association
And what happened ?
Nothing still the same output
I know you said you were using the example, however could you have another SPI device connected as well?
Nope, I don't have anything else connected to the Arduino,
sorry for the late response.
I used this on a different board. Worked fine. You may want to try it.
/*
SD card read/write
Mod 01 make file name a string and iterate until we find a unused file name.
Mod 02 add capability to increment filename.
Rev 03 tested successfully on Arduino M0
SD card attached to SPI bus on ICSP Header.
SD Board power = 5V (for large board with EEPROM)
based on code created: Nov 2010 by David A. Mellis, 9 Apr 2012 by Tom Igoe
This code is in the public domain.
driver has a 512 byte buffer then write to SD
Closing the file forces any buffered data to be written to the SD and also updates
the file's directory entry.
If you don't close the file, you will lose all data written the file since it was opened,
not just the last buffer, since the directory entry will not be updated.
*/
#include <SPI.h>
#include <SD.h>
// *** SD Card declarations **************************************************
// ***************************************************************************
#define SDCARD_CS_PIN 4
uint8_t fileNumb = 100;
char dataFile[8];
bool SD_Error = false;
File myFile; // create instance of a "File" class
void setup() {
SerialUSB.begin(115200);
delay (2000);
// Initializing SD card....
if (!SD.begin(SDCARD_CS_PIN))
{SerialUSB.print("initialization failed");
SD_Error = true;
}
// loop until we find a file that doesn't already exist.......
do
{
itoa(fileNumb, dataFile, 10); // (value, Array, base)
const char *extension = ".csv";
strcat(dataFile, extension); // syntax strcat(dest, source)
++fileNumb;
} while (SD.exists(dataFile));
SerialUSB.print("READY TO OPEN FILE FOR WRITING = ");
SerialUSB.println(dataFile);
myFile = SD.open(dataFile, FILE_WRITE); // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SerialUSB.println(myFile);
// if the file opened okay, write to it:
if (myFile) {
myFile.println("data from boiler"); // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SerialUSB.println("data from boiler");
//SerialUSB.print(" data written to file: ");
myFile.close(); // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
SerialUSB.println(dataFile);
}
else {
// if the file didn't open, print an error:
SD_Error = true;
}
SerialUSB.print("SD_Error = ");
SerialUSB.print(SD_Error);
}
void loop() {
// nothing happens after setup
}
I tried the code and i was getting errors about the serialusb... so I changed it to only serial (idk if that was the right thing to do)
The output is:
initialization failedREADY TO OPEN FILE FOR WRITING = 100.csv
0
SD_Error = 1
@ivan_i07
Installation and Troubleshooting is for Problems with the Arduino itself NOT your project. It says so in the description of the section. Therefore I have moved your post here. Please be more careful where you post in future.
You may want to read this before you proceed:-
how to get the best out of this forum
Hi,
When you used @JohnRob code, did you changed this line:
To
#define SDCARD_CS_PIN 10
Did you try any other of the examples?
With regard to pins/numbering - are you going by the labels printed on the 'Nano' or making some assumptions about "1" being in the corner somewhere.?
I ask because this issue has come up a few times this year.
Yup👍
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