Comments on: Guide to SD Card Module with Arduino https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/ Learn ESP8266, ESP32, Arduino, and Raspberry Pi Wed, 25 Feb 2026 17:00:36 +0000 hourly 1 https://wordpress.org/?v=6.8.5 By: Sara Santos https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1164396 Wed, 25 Feb 2026 17:00:36 +0000 http://randomnerdtutorials.com/?p=42299#comment-1164396 In reply to Kees.

Ok.

Thanks for letting me know.

Regards,
Sara

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By: Kees https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1163998 Mon, 23 Feb 2026 21:51:16 +0000 http://randomnerdtutorials.com/?p=42299#comment-1163998 In reply to Sara Santos.

Hi Sara,

I have just managed to get an Arduino UNO. With this UNO, I did the tests SD-Cardinfo and SD-ReadWrite (with the same Sd Card reader). No issues at all now. So re-testing is not needed. For your information, there are also a couple of other SD-related examples in File-Examples. Also to format your SD card. They are in File-Examples-SdFat-SdFormatter and -SdInfo. Those examples require that you use pin 10 and not pin 4 for the chip select. To find and use these last examples, you need to have SdFat installed via the library (SdFat v 2.3.0 by Bill Greiman). I will investigate further what might be the issue using the SD card reader with my Arduino Nano (although the Nano looks OK).

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By: Sara Santos https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1163960 Mon, 23 Feb 2026 17:02:59 +0000 http://randomnerdtutorials.com/?p=42299#comment-1163960 In reply to Kees.

Not at the time of creating this example.

We’ll have to test it again.

Regards,
Sara

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By: Sara Santos https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1163959 Mon, 23 Feb 2026 17:00:35 +0000 http://randomnerdtutorials.com/?p=42299#comment-1163959 In reply to Kees.

Hi.
Thanks for letting me know.
They probably changed the URL.

Regards,
Sara

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By: Kees https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1163454 Sat, 21 Feb 2026 08:01:45 +0000 http://randomnerdtutorials.com/?p=42299#comment-1163454 Hello,

With Windows10 I have formatted an 32 Gb SDcard as FAT32 and checked by asking the properties after the format was complete. It was OK.
After executing example CardInfo with a SDcard module and an Arduino Nano the results in the monitor are as below:
08:26:31.781 ->
08:26:31.781 -> Initializing SD card…Wiring is correct and a card is present.
08:26:32.388 ->
08:26:32.388 -> Card type: SD2
08:26:32.994 -> Could not find FAT16/FAT32 partition.
08:26:32.994 -> Make sure you’ve formatted the card
Unfortunately, I can’t tell Cardinfo that this SD card is actually formatted as FAT32 🙂

Then I tried File> Examples > SD > ReadWrite with this result:
08:38:58.014 -> Initializing SD card…initialization failed!

If I looked closer to the way these two examples are initializing the SD card then I see a difference.
The line ” if (!card.init(SPI_HALF_SPEED, chipSelect)) {Serial.println(“initialization failed. Things to check:”); ” etc. in the Cardinfo example works OK
but the similar initializing line in the Read/Write example ” if (!SD.begin(4)) {Serial.println(“initialization failed!”); ” etc. then the initializing is failed.
(note: the variable “card” in the CardInfo example is decalerd as “SD2card card;”)
I have tried another formatted SDcard. Same result. And I have used both SDcards in another device without any issue.
Have you perhaps ever encountered this issue as well?

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By: Kees https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1163214 Fri, 20 Feb 2026 11:09:46 +0000 http://randomnerdtutorials.com/?p=42299#comment-1163214 Hi,

In this project https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/
you have placed a Note:
“Note: different Arduino boards have different SPI pins. If you’re using another Arduino board, check the Arduino official documentation.”

The link to the documentation you give as https://www.arduino.cc/en/Reference/SPI is no longer valid.
I found this one:
https://docs.arduino.cc/language-reference/en/functions/communication/SPI/
Maybe a correction for your project.

Best regards,
Kees

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By: LAFOND https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1160614 Mon, 09 Feb 2026 11:13:47 +0000 http://randomnerdtutorials.com/?p=42299#comment-1160614 Sorry,
that was my mistake.

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By: LAFOND https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-1160609 Mon, 09 Feb 2026 10:50:25 +0000 http://randomnerdtutorials.com/?p=42299#comment-1160609 Hello,
On my 2560 board, I need to connect MOSI to pin 50 and MOSI to pin 51.
So, it works.
Is that correct ?

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By: Sara Santos https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-882107 Fri, 05 Jan 2024 09:57:39 +0000 http://randomnerdtutorials.com/?p=42299#comment-882107 In reply to TeamOFMind.

Hi.
What pins does it have instead?
Regards,
Sara

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By: TeamOFMind https://randomnerdtutorials.com/guide-to-sd-card-module-with-arduino/#comment-882088 Fri, 05 Jan 2024 06:52:22 +0000 http://randomnerdtutorials.com/?p=42299#comment-882088 In reply to Sara Santos.

hey my sd cart module havent got a vcc pin. What should I do

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