int button=2; int buttonVal; void setup() { Serial.begin(9600); pinMode(button,INPUT); digitalWrite(button,HIGH); } void loop() { buttonVal=digitalRead(button); Serial.print("Your Button is: "); Serial.println(buttonVal); } why is it 0 when I press the button

No The voltage on the pin is 0, and the current is flowing through the built in pullup resistor, which is about 20K and 50K, from about 5V to 0V I will leave it to you to calculate the current using Ohms law if you want to

Why is it 0 when I press the button

Projects General Guidance

zevekas September 5, 2021, 9:49am 4

I understand that but why is it LOW

Topic		Replies	Views
buttons and serial.print Interfacing	8	6978	May 6, 2021
Not understanding digitalRead() General Electronics	7	940	May 6, 2021
digitalRead returns HIGH without any changes on voltage General Guidance	10	4701	May 5, 2021
Input pin always reads high, even with nothing Syntax & Programs	14	31900	May 6, 2021
[ Arduino UNO ] Button state change Programming	27	20363	May 5, 2021

Why is it 0 when I press the button

Related topics