How to Use the Arduino IDE’s Preprocessor to Conditionally Compile Features
Pare down your Arduino sketch size by leveraging preprocessor directives—discover how to target specific hardware and cut flash usage dramatically.

Pare down your Arduino sketch size by leveraging preprocessor directives—discover how to target specific hardware and cut flash usage dramatically.

Because every byte counts, learn how conditional compilation slashes memory use—discover the trick that saves 1.5KB without slowing your Arduino.