Arduino overload serial output5/29/2023 ![]() That same leg of the button connects through a pull-down resistor (here 10k ohm) to ground. ![]() The third wire goes from digital pin 2 to one leg of the pushbutton. The first two, red and black, connect to the two long vertical rows on the side of the breadboard to provide access to the 5 volt supply and ground. Hardware RequiredĪ momentary switch, button, or toggle switchĬonnect three wires to the board. This example shows you how to monitor the state of a switch by establishing serial communication between your Arduino and your computer over USB.
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