Hello everyone. I'm working on a project that requires 3 LEDS to be lit as follows:
Button pushed LED1 is lit
Button pushed again LED1 stays lit while LED2 is lit
Button pushed again LED 1 & 2 stay lit while LED3 is lit
Button Pushed 4th time All three LED lights flash on and off
Button pushed 5th time all lights turn off
This is the current code I am using. Could someone please help me re-write this to work for the above results? Thank you
/// this constant won't change:
const int buttonPin = 2; // the pin that the pushbutton is attached to
const int ledPin = 12; // the pin that the LED is attached to
const int ledPin2 = 11;
const int ledPin3 = 10;
// Variables will change:
int buttonPushCounter = 0; // counter for the number of button presses
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button
void setup() {
// initialize the button pin as a input:
pinMode(buttonPin, INPUT);
// initialize the LED as an output:
pinMode(ledPin, OUTPUT);
// initialize serial communication:
pinMode(ledPin2, OUTPUT);
pinMode(ledPin3, OUTPUT);
Serial.begin(9600);
}
void loop() {
// read the pushbutton input pin:
buttonState = digitalRead(buttonPin);
// compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter
if (buttonState == HIGH) {
// if the current state is HIGH then the button went from off to on:
buttonPushCounter++;
Serial.println("on");
Serial.print("number of button pushes: ");
Serial.println(buttonPushCounter);
} else {
// if the current state is LOW then the button went from on to off:
Serial.println("off");
}
// Delay a little bit to avoid bouncing
delay(50);
}
// save the current state as the last state, for next time through the loop
lastButtonState = buttonState;
// turns on the LED every four button pushes by checking the modulo of the
// button push counter. the modulo function gives you the remainder of the
// division of two numbers:
if (buttonPushCounter == 1) {
digitalWrite(ledPin, HIGH);
} else {
digitalWrite(ledPin, LOW);
}
if (buttonPushCounter == 2) {
digitalWrite(ledPin2, HIGH);
} else {
digitalWrite(ledPin, LOW);
}
if (buttonPushCounter == 3) {
digitalWrite(ledPin3, HIGH);
} else {
digitalWrite(ledPin, LOW);
}
}