![]() In case, if you are using other Arduino Boards then you follow the below table for connection. For Arduino boards like UNO/Nano, the SPI pins are 13 (SCK), 12 (MISO) and 11 (MOSI). Since the SD Card Module works on SPI Communication protocol, thus we need to connect it to SPI Pin of Arduino Board.Ĭonnect the SD Card Module to Arduino as per the above Circuit Diagram. Now let us learn interfacing of SD Card Module with Arduino to read & write data or to make a data logger. ![]() Now the SD Card is properly formatted and you can use the SD Card with SD Card Module to use in project applications. Then press Start to initialize the formatting process Go to My Computer and right-click on the SD card. To format the SD card, insert it into your computer. ![]() You should format the SD card as FAT16 or FAT32. CS: Chip select signal pin to enable/disable line Preparing the micro SD cardīefore you insert the micro SD card into the module, you must properly format the card. SCK: Accepts clock pulses for Data Synchronization 6. There are total of six pins ( GND, VCC, MISO, MOSI, SCK, CS) on a SD-Card Adapter.ġ. There is also a L ogic Level converter IC 74LVC125A on the module which converts the interface logic from 3.3V-5V to 3.3V. But the module has an onboard ultra-low dropout regulator that converts voltages from 3.3V – 6V down to ~3.3V. Therefore, we cannot SD Card directly with 5V logic. The operating voltage of micro SD Cards is 3.3 V. Hobbyists like us prefer SPI Mode for interfacing as it’s easy compared to SDO mode which is very complex. There are actually two ways to interface with micro SD cards – SPI mode and SDIO mode. The SD card module is especially useful for projects that require data logging. The DHT11 sensor is used to sense the relative humidity & temperature and the SD card is used to save the values of the humidity and the temperature every 1 second in txt format.Įarlier, we used the SD Card Module on the project like RFID Attendance System and on Surveillance CCTV project.įor this tutorial, we recommend to buy the following list of components directly from Amazon. Similarly, Building a data logger using Arduino and SD Card is so easy. Hence, the tutorial covers the reading of SD Card info and the method to read and write data to SD Card. The Module is a simple solution for transferring data to and from a standard SD card. The Micro SD Card Reader Module is also called a Micro SD Adaptor. We can use the SD Card Module to add the desired memory to the Arduino project to store the data, Media, etc. In this tutorial, we will learn to use of SD Card Module with an A rduino microcontroller to read, write, store data or make a data logger. Overview: Using SD Card Module with Arduino
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