ChApTEr 2 ■ hArdwArE for IoT SoluTIonS
Notice that in Figure 2-13 you can see a sample sketch (called a blink) and the result of a successful
compile operation. Notice also at the bottom it tells you that you’re programming an Arduino Uno board on
a specific serial port.
Because of the differences in processor and supporting architecture, there are some differences in how
the compiler builds the program (and how the IDE uploads it). Thus, one of the first things you should do
when you start the IDE is choose your board from the Tools ➤ Board menu. Figure 2-14 shows a sample of
selecting the board on a Mac.
Figure 2-13. The Arduino IDE