Go Down

Topic: NOOB of NOOBS can't figure out what's wrong? (Read 490 times) previous topic - next topic

kerbaltron

I just built Make: Getting Started with Arduino Example 03C and the LED stays on
even after I push the button. The circuit I built looks right, but I am wondering if
I'm missing something in my code. Please help :smiley-eek:. Code Below.
Also, I would love advice  :smiley-red: on whether there is a good place for Noobs to go to get help
with their code or tutoring. I live in San Francisco, just in case you think the
best thing is to go to classes to learn.

/*This is a sketch that turns on an LED when a button
is pushed and keeps it on after it is released
including simple de-bouncing using a delay*/

#define LED 11 // the pin for the LED
#define BUTTON 7 //the input pin where the pushbutton is connected
int BUTTONState = 0;//this will measure whether there is current flowing
                             //through the BUTTON
int old_BUTTONState = 0;//this will check if there was current flowing
                                   //before by Delay milliseconds away
int LEDState = 0; //This will be used to turn the LED on and off 
int Delay = 10;

void setup()
{
  pinMode(LED, OUTPUT);//tell Arduino LED is an output
  pinMode(BUTTON, INPUT);//tell Arduino BUTTON is an input
}

void loop()
{
  BUTTONState = digitalRead(BUTTON);//read BUTTON's state and store it
 
  //check if there was a transition
  if ((BUTTONState = HIGH) && (old_BUTTONState = HIGH))
  {
   LEDState = 1 - LEDState;
   delay(Delay);
  }
   
old_BUTTONState = BUTTONState; //store the current BUTTON State as
                                                //the old State after <Delay/100> seconds
if (BUTTONState == HIGH)
  {
    digitalWrite(LED, HIGH);//turn on LED
  } else {
    digitalWrite(LED, LOW);//turn off LED
  }
}

WizenedEE

if (buttonState = HIGH)

= sets a variable to a value
== checks to see if the variable is equal to a value.

kerbaltron

Thanks WizenedEE. I totally was blind to that. It's like having one of
of those sentences.
(see what I did there?)

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy