WMYCONGCONG 8 PCS Micro SD TF Card Adapter Reader SPI Interface Driver Module for Arduino 

Dear friends welcome back. Today we will see how to use the SD card module with Arduino in order to add storage space to our projects. So, let's start. The module is very easy to use and the cost of it is very low. It costs around 2.5 euros on ebay.In order to use it you will also need a Micro SD card. This card here. The SD card module is 3.3 Volt device. so it won't tolerate the 5V logic levels that Arduino uses. Luckily most of the modules for Arduino use a 3.3V regulator and a logic level shifter so they can work with Arduino. The regulator is this chip here and the logic level shifter is this chip here. Please check your modules for those two chips before connecting them to 5V levels. The connection of the module is very easy. The module uses the SPI protocol in order to communicate with Arduino. So, we need to use the hardware SPI pins of our Arduino board. On an Arduino Uno thos