Tutorial: Writing and reading to SD cards

Tutorial: Learn how get SD cards working and how to read and write to them. Shown are card types, wiring and 3 code examples to get SD cards working, saving comma separated data (CSV) and plotting results in Excel. A third example shows how to read CSV data from and SD card. The library used here is Sdfat.h Whether you use an Arduino, Teensy, or ESP32. chance are you will need to store data such as telemetry, GPS coordinates, or other measurements and hopefully this lesson will help learn how to use SD cards.
Other useful tutorials
Temperature sensor shootout: • Temperature sensor sho...
Using 7-segment LED's: • Using 7-segment displa...
Saving settings even during MCU power down: • Tutorial: How to save ...
Getting those darn TFT LCD displays to work: • Tutorial: Getting TFT ...
Turning stuff on or off: • Tutorial: Use your MCU...
Writing analog signals/voltages: • Tutorial: Use analogWr...
Using digital sensors: • Tutorial: Use digitalR...
Using analog sensors: • Tutorial: Use analogRe...
Talking to your Arduino: • Tutorial: How to talk ...
Some fun projects to build
Build a 3D printer filament meter: • Build a 3D printer fil...
Homemade motorized table saw fence • DIY motorized table sa...
High"er" res homemade Thermal Camera for $100: • DIY high-er res Therma...
DIY Garage Parking Assistant: • DIY Garage Parking As...

[@rarenu]

One more good addition to your instructional videos. Thanks for the detailed description.🙏

[@KrisKasprzak]

Glad it was helpful!

[@mpi6416]

Thanks for the great video.
Is it possible to get the source code?

[@7alfatech860]

Thanks for this video. Very helpful, as always👍

[@KrisKasprzak]

Glad it was helpful!

[@avejst]

Great walkthrough
Thanks for sharing :-)

[@KrisKasprzak]

My pleasure!

[@sarojchaudhary9967]

Thank You for kind of your explanation,
can you share the code??

[@aryangupta4252]

Teensy 4.1 has sd card module built in, will this library work with that, ehat what will be the CS pin for that SD card module

[@DesignTuneOperate]

This is a great tut but please can we have the code? would be really usefull thanks : )

[@sltechgalaxy1677]

How to change Pin Configuration compatibility for the Esp32 board??

[@KrisKasprzak]

You will have to Google the type of board that you have to get the correct pin out information

[@sltechgalaxy1677]

how to change pin configuration in sdfat library

[@sltechgalaxy1677]

can i use esp32 board for this project?

[@KrisKasprzak]

Yes

[@JeramieSaito]

I am not techy at all I do not understand all of this. Is this how you are supposed to read and write SD cards?

[@KrisKasprzak]

Yep this is pretty common

[@JeramieSaito]

@@KrisKasprzak ohhh 😮 wow I still can't wrap my head around it lol