How to press 2 buttons at the same time?

Projects Programming
1

I have a project and I need 2 button pressed at the same time to enter a code to turn on a led. How will I do that?

I cant seem to figure out how to press 2 buttons at the same time to print on my lcd. No one can press 2 buttons at the same exact time so do I:

//Un tested code
if(button1 == high){
while(button2 == HIGH){   //wait for button 2 to also be high
digitalWrite(LED1,HIGH);

}
}

All I need is an idea or some way to turn on an led by pressing 2 buttons at the same time.

Thanks for reading!

2 
if (button1 == HIGH && button2 == HIGH)
  // Both buttons are HIGH
1 Like
3

I tryed that and it didnt work last time now it did :sweat_smile:

Thanks!!!

4

LOL!

Let's hope it works next time. Musta been the phase of the Moon or something.

a7

5

As a poor mans switch bounce routing I usually use this code approach


if (button1 == HIGH && button2 == HIGH){
     delay(100);
     if (button1 == HIGH && button2 == HIGH){

                put your code within these braces

    }
}

Normally a switch will stop bouncing at around 50ms. A delay of 100 ms when it comes to hand operated switches is not noticeable.

1 Like
6

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