With arduino, you can throw the same code together in 1/10 the time it takes you to fully understand ONE module. Maybe the code isn’t as efficient, but when all that I want is to write ‘hello ...

#define LED_BUILTIN 13. This indicates digital pin 13 on the Arduino's pins connector (also called a header). But at the same time LED_BUILTIN tells the Arduino to use the actual built-in LED on ...