Adafruit MicroSD SPI or SDIO Card Breakout Board

Convenient project storage (since there's still no breakout board for floppy disks)

by Jeff Epler

published July 31, 2020, last edited September 17, 2025

posted in Adafruit Products CircuitPython Breakout Boards/ Storage

Save Download

Beginner

Product guide

Adalogger M0 Feather

The Feather M0 Adalogger is a classic board that doesn't have the same power as its newer siblings, but it's still good for logging. Best of all, no soldering is necessary to access the SD card.

To mount the SD card, use the following code. Remember, to put it in the file mount_sd.py on CIRCUITPY so you can easily call it from code.py or the REPL with import mount_sd.

Download File

Copy Code

import adafruit_sdcard
import board
import busio
import digitalio
import storage

spi = board.SPI()
cs = digitalio.DigitalInOut(board.SD_CS)

sdcard = adafruit_sdcard.SDCard(spi, cs)
vfs = storage.VfsFat(sdcard)
storage.mount(vfs, "/sd")

import adafruit_sdcard
import board
import busio
import digitalio
import storage

spi = board.SPI()
cs = digitalio.DigitalInOut(board.SD_CS)

sdcard = adafruit_sdcard.SDCard(spi, cs)
vfs = storage.VfsFat(sdcard)
storage.mount(vfs, "/sd")