Arduino Tutorial #14 using push button to turn on LED light.
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LIST OF COMPONENT (affiliate links)

[ Ссылка ] (Arduino)
[ Ссылка ] (Pushbutton)
[ Ссылка ] (Breadboard)
[ Ссылка ] (Resistor)
[ Ссылка ] (Jumper wire)
[ Ссылка ] (LED)

const int buttonPin = 2;
const int led_Red = 13;
const int led_Green = 8;
int buttonState = 0;

void setup() {
pinMode(buttonPin, INPUT);
pinMode(led_Red , OUTPUT);
pinMode(led_Green, OUTPUT);
}

void loop() {
buttonState = digitalRead(buttonPin);
if (buttonState == HIGH) {
digitalWrite(led_Green, HIGH);
digitalWrite(led_Red , LOW);
} else {
digitalWrite(led_Red , HIGH);
digitalWrite(led_Green, LOW);
}
}

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