Adafruit data logging shield
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- mkovacs
- Posts: 1
- Joined: Sat Oct 09, 2021 9:38 pm
Adafruit data logging shield
Can I use two or more data logging shields with my Adafruit METRO? I have wired the headers to accept stacks.
- adafruit_support_carter
- Posts: 29150
- Joined: Tue Nov 29, 2016 2:45 pm
Re: Adafruit data logging shield
You can, but it will take a little work. The SD card uses SPI, which has shared pins SCK/MOSI/MISO for connected devices (like each SD card). However, each device needs its own chip select (CS) pin. So for one shield, you'll need to cut the CS trace and solder in a jumper wire to a new/different pin to avoid a CS pin conflict between the two shield. And then set the CS pin in code for the second shield.
Please be positive and constructive with your questions and comments.