Arduino - Button

Arduino - Button

Button And Switch

This article will give an example how to use Arduino board with a switch. The Arduino board reads the digital status of the switch as an input to execute an your functions.

There are two types of switching circuits.

1. pull-up (Normally the status is '1', If you press the button status is set to '0')
2. pull-down (Normally the status is '0', If you press the button status is set to '1')

Switching circuit, pull-down

In this article, we will select a pull-up circuit (Normally the status is '1', If you press the button status is set to '0')

Example.

pull-up circuit switch

Example Program

Arduino has special functions for internal pull-up circuits. So we can use only switch. (Must be declared as INPUT_PULLUP)

Internal pull-up circuit switch

Example Program

After uploading the program onto the Arduino board, see the results of running the program from Serial Monitor or Serial Plotter.

 Serial Monitor

Serial Plotter