Ardunio Mega Sd Card initialization failed | SPI protocol

Projects Networking, Protocols, and Devices
1

Hello, I am trying to build a flight data recorder for my airplane using an SD card module and Arduino Mega but I am getting the error initialization failed!

I couldn't find the name of the module but here is where I bought it:

This module has level shifter on board so it is tolerant to 5V ardunio boards.

I used the following sketch:

https://create.arduino.cc/projecthub/electropeak/sd-card-module-with-arduino-how-to-read-write-data-37f390

I triple checked the wiring and here it is:

MOSI => 51, MISO => 50, SCK => 52 , SS => 53

I tried using the module on Ardunio UNO and it worked great.

I checked if the cables or ardunio pins are faulty using a multimeter. They worked great. Ardunio SPI pins are connected to atmega chip (checked).

I am not sure if I am doing something wrong. All input is appriciated

2

SOLVED! Guys even though it says initialization failed it actually is not failing. I dont understand why but when you change the part

Serial.print("Initializing SD card...");
if (!SD.begin(10)) {
Serial.println("initialization failed!");
while (1);
}
Serial.println("initialization done.");

to

SD.begin();

it starts to work marvelously !!

But It would be still helpful if someone can explain why did it say failed in the first place

3

SD.begin(10) means use pin 10 for the SS on the SD card.

SD.begin() means use the default pin which is 53 on a Mega.

4

Well, it explains everything. Thanks