So I have 4 leds, 1 pulses regularly like a heartbeat. The other three are needed to go turnoff with 5 seconds in between each other. I have only just started, however I have read a lot of coding throughout the arduino website to try and help me. The program will easily time up to 5 seconds where the first led will turn off. However after that the other two do not go off at 10 seconds and then a gain at 15 seconds and I can't work out how. I have never used timers before only delays. However for the pulse to keep pulsing I can not use delay. Please note I am using an arduino lilypad if that makes any difference
For the timer I have used both int interval = 5000; to create the 5 seconds pause
but then 9000 does not work for 9 seconds etc. I did some research and saw how you use (60 * 60 * 1000); to make it work, however I still don't know why, I have done loads of research, but I just can't get my head around it. I don't even know it I'm doing it the right way. Any advice would be amazing to have Thank you
here is the code
int led7 = 7;// light that will go off int led8 = 8;// light that will go off int led9 = 13; // light that will go off const int LED = 9; // pulse led
unsigned long currentMillis; unsigned long previousMillis = 0; // will store last time LED was updated int interval = 5000; // interval at which to blink (milliseconds) int interval2 = ( 9 * 1000); int interval3 = (15 * 1000);
//sensor int sensorPin = 0; // light sensor is connected to analog pin 0 int sensorValue; // variable to store the value coming from the sensor
void setup() { digitalWrite(led7, HIGH); //makes leds default on digitalWrite(led8, HIGH); digitalWrite(led9, HIGH);
pinMode(led7, OUTPUT); pinMode(led8, OUTPUT); pinMode(led9, OUTPUT);
Serial.begin( 9600);
}
void loop () { //for sensor
/*Serial.println("And the value is: "); sensorValue = analogRead(sensorPin); // read the value of the sensor if (sensorValue >= 100) { // if the number is above 100, // digitalWrite(ledPin, HIGH); // turn the LED on Serial.println("too bright"); // send that value to the computer } else { // otherwise, //digitalWrite(ledPin, LOW); // turn the LED off Serial.println(sensorValue); // send that value to the computer } */
//for pulsing l.e.d static float in = 4.712; // controls how bright the .e.d goes by setting parameters from 0 -19 float out;
// do input, etc. here - as long as you don't pause, the LED will keep pulsing
in = in + 0.0005; // changes speed of fade by a lot if (in > 10.995) in = 4.712; out = sin(in) * 127.5 + 127.5; analogWrite(LED,out);
//unsigned long currentMillis = millis(); currentMillis = millis(); //led7turnoff if(currentMillis - previousMillis > interval) { previousMillis = currentMillis; digitalWrite(led7, LOW); }
//led8 turnoff if(currentMillis - previousMillis > interval2) { previousMillis = currentMillis; digitalWrite(led8, LOW); }
if(currentMillis - previousMillis > interval3) { previousMillis = currentMillis; digitalWrite(led9, LOW); } }