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: https://youtu.be/D_gdVpZjk4E
Using 7-segment LED's: https://youtu.be/JF4kpjlvWXs
Saving settings even during MCU power down: https://youtu.be/zB0O_W62xYE
Getting those darn TFT LCD displays to work: https://youtu.be/XOlAo_599M4
Turning stuff on or off: https://youtu.be/wZQbdLxppE8
Writing analog signals/voltages: https://youtu.be/c7e-ZsEyZdM
Using digital sensors: https://youtu.be/E8QcIm_nKJ4
Using analog sensors: https://youtu.be/DrOb6vd7O08
Talking to your Arduino: https://youtu.be/iZ7mI3tRZjM
Some fun projects to build
Build a 3D printer filament meter: https://youtu.be/YZDRbHPOgWU
Homemade motorized table saw fence https://youtu.be/_mubBqKiNc0
High"er" res homemade Thermal Camera for $100: https://youtu.be/1EBoug27hrA
DIY Garage Parking Assistant: https://youtu.be/-45MwNsbQ_4