Hi. I have a couple of LEDs that I'd like to turn off and on in a sequence, but I'm having trouble finding out how to have multiple on/off states for each. At the moment every tutorial I've found has had a single on/off state. What I what is a set of LEDs to turn on for a second, then off for a second. At the same time a second set of LEDS should be off at the start for 1.33 seconds, flash for .33 of a second, and the go off the remaining .33 seconds of the 2 second sequence. Visually the loop would look like this:
LED1: |||||||||.........
LED2: ............|||...
Right now I'm working off the "millis() for timing" tutorial which, as I said, old allows a single on and off time to be set (I need a no delay solution because I'll be having other LEDs fading and blinking independently). Here's the code I'm using.
// These variables store the flash pattern
// and the current state of the LED
int ledPin1 = 4; // the number of the LED pin
int ledState1 = LOW; // ledState used to set the LED
unsigned long previousMillis1 = 0; // will store last time LED was updated
long OnTime1 = 250; // milliseconds of on-time
long OffTime1 = 750; // milliseconds of off-time
int ledPin2 = 7; // the number of the LED pin
int ledState2 = LOW; // ledState used to set the LED
unsigned long previousMillis2 = 0; // will store last time LED was updated
long OnTime2 = 330; // milliseconds of on-time
long OffTime2 = 400; // milliseconds of off-time
void setup()
{
// set the digital pin as output:
pinMode(ledPin1, OUTPUT);
pinMode(ledPin2, OUTPUT);
}
void loop()
{
// check to see if it's time to change the state of the LED
unsigned long currentMillis = millis();
if((ledState1 == HIGH) && (currentMillis - previousMillis1 >= OnTime1))
{
ledState1 = LOW; // Turn it off
previousMillis1 = currentMillis; // Remember the time
digitalWrite(ledPin1, ledState1); // Update the actual LED
}
else if ((ledState1 == LOW) && (currentMillis - previousMillis1 >= OffTime1))
{
ledState1 = HIGH; // turn it on
previousMillis1 = currentMillis; // Remember the time
digitalWrite(ledPin1, ledState1); // Update the actual LED
}
if((ledState2 == HIGH) && (currentMillis - previousMillis2 >= OnTime2))
{
ledState2 = LOW; // Turn it off
previousMillis2 = currentMillis; // Remember the time
digitalWrite(ledPin2, ledState2); // Update the actual LED
}
else if ((ledState2 == LOW) && (currentMillis - previousMillis2 >= OffTime2))
{
ledState2 = HIGH; // turn it on
previousMillis2 = currentMillis; // Remember the time
digitalWrite(ledPin2, ledState2); // Update the actual LED
}
}
