sdcardio is an SPI interface SD card library in CircuitPython 6.0 that is optimized in C to be much faster than the original adafruit_sdcard library. Some much smaller/older boards don't have enough memory for this module, in which case you will have to use adafruit_sdcard

With all its built-in sensors and battery power, the Feather M4 Sense is great for data-logging projects. Stacking headers or FeatherWing Doublers need a little soldering but no custom wiring.

  • Plug the FeatherWing into the Feather.

You can also place them side by side on a FeatherWing Doubler.

Don't forget that the Adalogger FeatherWing has a Real Time Clock (RTC) so you can even timestamp your logs!

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.

import board
import busio
import sdcardio
import storage

spi = board.SPI()
cs = board.D10

sdcard = sdcardio.SDCard(spi, cs)
vfs = storage.VfsFat(sdcard)
storage.mount(vfs, "/sd")
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This guide was first published on Jul 31, 2020. It was last updated on Jul 31, 2020.

This page (Feather Sense + Adalogger FeatherWing) was last updated on Oct 15, 2021.

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