Simple logic level convertor for SD card interface?

Using Arduino Networking, Protocols, and Devices
#1

I realize that I will need to provide my SD card socket with a robust 3.3v power supply, but will this logic level converter handle the SPI comms between my uno and the SD card?

http://www.sparkfun.com/products/8745

Also, how is it different than a substantially more expensive I2C level shifter?

#2

Also, how is it different than a substantially more expensive I2C level shifter?

This device is just a basic voltage level translater. One channel for 5v to 3.3 and one for 3.3 to 5v.

Each I2C channel must be bidirectional, a more complicated task, as data goes both directions at different times on both the data and clock channels.

Lefty

#3

You only need 6 resistors to interface an Uno and an SD card in SPI mode.

See http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1206874649/8

#4

resistor dividers can be made to work, but a 74hc4050n is far easier to use, and far, far more reliable.

#5