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Interfacing Pushbutton - Arduino mifratech projects technical solutions
Interfacing Pushbutton - Arduino mifratech projects technical solutions

 

Interfacing Pushbutton - Arduino

The pushbutton is a component that connects two points in a circuit when you press it. When the pushbutton is open (undressed) there is no connection between the two legs of the pushbutton, so the pin is connected to 5 volts (through the pull-up resistor) and we read a HIGH. When the button is closed (pressed), it makes a connection between its two legs, connecting the pin to ground, so that we read a LOW. (The pin is still connected to 5 volts, but the resistor in-between them means that the pin is "closer" to ground.)

Step 1: Components Requirments

 

 1. Arduino UNO

2. Breadboard

3. Pushbutton

4. Resistor

5. Jumper wire

Step 2: Circuit Diagram

Connect three wires to the board. The first goes from one leg of the pushbutton through a pull-down resistor (here 10k ohm) to ground. The second goes from the corresponding leg of the pushbutton to the 5 volt supply. The third connects to a digital I/O pin (here pin 2) which reads the button's state.

 

Step 3: Code

 

 

 

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