SD card storage is a relatively wide subject. Therefore, we will focus on the basics of interfacing, reading, and writing data to and from a micro SD card with the Arduino Uno platform. At the end of this topic, you will clearly understand how SD cards can be used in any electronic device for local storage capabilities.
In the example that we will build, our focus will be to understand the following basic activities:
- Reading pre-configured data from an SD card and then using it in the C sketch
- Writing new data to local files that can be ported or transferred to other mediums as required
Reading pre-configured data from an SD card is a common technique to have an external place to store the values of variables that are used in the C sketch. This is a normal practice to read system configurations from a local storage device. The variables in...
