I made a skill stop game from Arduino Uno and a pushbutton.Here is the code:

byte led_one=2;
byte led_two=3;
byte winner_led=4;
byte led_four=5;
byte led_five=6;
byte pushbutton=12;
byte score=0;
int pushbutton_value=digitalRead(pushbutton);

void setup() 
// put your setup code here, to run once:

void loop() 
// put your main code here, to run repeatedly:

  for (int x=1;x<=6;x++)
    if(pushbutton_value==HIGH && x==winner_led)
    else if(pushbutton_value==HIGH && x==led_one)

My Problem is that Whenever I push the button The Serial Monitor is printing out the wrong score serial print output

  • 1
    It'll even notice that push button is pressed? I wonder how - the only reading is in pushbutton_value initialization. Also if you have INPUT_PULLUP, you should be checking for LOW as button should be switching ground.
    – KIIV
    Dec 3, 2016 at 10:44
  • LOW not working too
    – abc
    Dec 3, 2016 at 10:48
  • Well, more specifically: Where do you read the current state of the push button?
    – KIIV
    Dec 3, 2016 at 10:55
  • To the pushbutton_value variable
    – abc
    Dec 3, 2016 at 10:56
  • And when this digitalRead happens?
    – KIIV
    Dec 3, 2016 at 10:57

1 Answer 1


I wonder why you initialized score as byte! Change it to int. As you can see when you Serial Print your score value doesn't cross 256 because the largest value a byte can have is 256 but you are summing score to 500

  • Hmm after I did this It still isnt working
    – abc
    Dec 3, 2016 at 11:02
  • digitalread your pushbutton_value in the loop, and whats was the output before..its still not crossing 256? Dec 3, 2016 at 11:04
  • it is 0 now. What should I dp?
    – abc
    Dec 3, 2016 at 11:29
  • Could you please spoon feed me the code
    – abc
    Dec 3, 2016 at 11:30
  • How to predict the score without counting the number of pushbutton_value==HIGH recorded for the x==winner_led and x==led_one events ? Add 2 integers counters to follow those events.
    – J. Piquard
    Dec 3, 2016 at 20:24

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