# Two MCUs, one SD card (SPI +Serial?)

**URL:** <https://forum.arduino.cc/t/two-mcus-one-sd-card-spi-serial/849312>\
**Category:** Programming\
**Created:** [April 16, 2021, 6:13am UTC](https://forum.arduino.cc/t/two-mcus-one-sd-card-spi-serial/849312 "2021-04-16T06:13:55Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![sterretje](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/sterretje/32/391294_2.png) [@sterretje](https://forum.arduino.cc/u/sterretje)\
**Post date:** [April 18, 2021, 8:08am UTC](https://forum.arduino.cc/t/two-mcus-one-sd-card-spi-serial/849312/14 "2021-04-18T08:08:04Z")

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Microcontrollers don't know 😉

Maybe reading [Serial Input Basics - updated](https://forum.arduino.cc/t/serial-input-basics-updated/382007) might give you ideas.

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