Hi all
I have bought a micro SD card reader for an ARduino project.
Micro SD card reader
3.3Vdc or 5Vdc power supply; Communication via SPI.
Compatible with SD Card up to 16GB and SDHC Card up to 16GB; Support SD library.
Through programming, you can read and write to the SD card using your Microcontroller.
Energy consumption module that allows the reading of all the data contained in the SD card, easily interfaced with various types of microcontroller.
This product includes an E-Book which provides useful information on how to start your project. It allows for quick installation and saves time during the setup process. Includes a number of application examples, comprehensive installation guides, and libraries.
I have noticed 2 IC on it:
AMS1117 that is a voltage regulator to have 3.3V on data lines
VHCT125A that should be a buffer
Buffer
Why is this buffer needed? What does it do? I have seen SD cards directly connected to Arduino.
NO buffer connection
Thanks
I have bought a micro SD card reader for an ARduino project.
Micro SD card reader
3.3Vdc or 5Vdc power supply; Communication via SPI.
Compatible with SD Card up to 16GB and SDHC Card up to 16GB; Support SD library.
Through programming, you can read and write to the SD card using your Microcontroller.
Energy consumption module that allows the reading of all the data contained in the SD card, easily interfaced with various types of microcontroller.
This product includes an E-Book which provides useful information on how to start your project. It allows for quick installation and saves time during the setup process. Includes a number of application examples, comprehensive installation guides, and libraries.
I have noticed 2 IC on it:
AMS1117 that is a voltage regulator to have 3.3V on data lines
VHCT125A that should be a buffer
Buffer
Why is this buffer needed? What does it do? I have seen SD cards directly connected to Arduino.
NO buffer connection
Thanks
Last edited: