SD card

Video tutorial 29 - Use of SD memory card: https://singtown.com/learn/50244/

What if my code has 100,000 lines and the built-in flash is not enough? What if I want to save pictures?

The answer is, you can use an SD card!

So how to use an SD card? The SD card is also a file system. When the power is on, if the SD card is inserted, the SD card's file system will automatically replace the built-in Flash file system. Every time the power is on, main.py in the SD card will run. Isn't it very intuitive and convenient? The maximum capacity of the SD card is 2TB.