
Chapter 2: Getting Started with Arduino
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The Arduino UNO also has a reset button. That will reset
your Arduino, making it re-run the sketch from startup()
without unplugging it all.
The long black brick in the middle of the circuit board
is your microcontroller, the “brains” of the board. The
Arduino UNO uses an ATmega328 microcontroller.
There are also several LEDs mounted on the UNO. One is
your power LED. Another is the LED attached to digital pin
13 that we can use to test sketches. There are also LEDs
(TX and RX) that show when data is being transmitted or
received.
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So, we’ve blinked an LED! We’ve started to see that
working with ...