Arduino Pro Micro 3.3V + Micro SD Card Breakout

Hi,

I have an Arduino Pro Micro 3.3v/8MHz connected to Sparkfun’s Breakout Board for microSD Transflash. The connections go like this:

Pro Micro microSD Breakout

VCC -----------> VCC

GND -----------> GND

10 ------------> CS

16 ------------> DI

14 ------------> DO

15 ------------> SCK

The CD pin is not connected.

I’m following Ladyada’s excellent MicroSD tutorial: http://www.ladyada.net/products/microsd/

Using the Ladyada SD library in Arduino 1.0.1, I opened the CardInfo example sketch. I changed the chipSelect pin variable to 10.

After a successful upload and starting the Serial Monitor, I get the error that “initialization failed” and no card was found. Meh.

This forum post in the Sparkfun forums (viewtopic.php?f=32&t=32037) led me to believe this is a problem with the Slave/Chip Select pin configuration. Since the CS/SS pin on the Arduino Pro Micro is not broken out to the pins, I have to use another pin.

I tried to use another SD card library (the solution at the bottom of the forum post), but to no avail. Still no happiness.

What can I do to interface with my microSD card over SPI with the Arduino Pro Micro?

Thanks for the help in advance.

Hi

I ordered same items (Pro Micro 3.3v and SD Micro holder)

I would like to know if you managed to make it work by now?

Many Thanks,

Where is the best point to tap the SS pin of the Arduino Pro Micro 3.3v?

Purpose of tap is to connect the CS pin if the SD Micro Breakout board.

Please see picture below

SOLVED

https://forum.sparkfun.com/viewtopic.php?f=32&t=32037