Arduino pin always high and other blink at same time

Projects Programming
1

I need a pin always high without delay and in same time one pin blink.

I try this code, but the bluetooth light isn't always linked

int led = 13;
const int bluetooth = 11;
int ledState = LOW; // ledState used to set the LED
long previousMillis = 0;
long interval = 0;
int lamp = 12;

void setup() { // put your setup code here, to run once:
pinMode(led, OUTPUT);
pinMode(lamp, OUTPUT);
pinMode(bluetooth, OUTPUT); }

void loop() {
digitalWrite(bluetooth, HIGH);
unsigned long currentMillis = millis();
if(currentMillis - previousMillis > interval) {
previousMillis = currentMillis;
if (ledState == LOW)
ledState = HIGH;
else ledState = LOW;
digitalWrite(bluetooth, ledState); }

digitalWrite(led, HIGH);
delay(5000);
digitalWrite(led, LOW);
delay(5000);
digitalWrite(lamp, HIGH);
delay(5000);
digitalWrite(lamp, LOW);
delay(5000);
}

Can someone help?

2

Can someone help?

When you get rid of ALL of the delay calls, yes. Until then, the reason that your bluetooth LED doesn't (b)link is because of the delay() calls.

3

Checkout the blinkWithoutDelay example and see how to avoid using delay().

4

I cannot begin to tell you how much I hate your code layout. It seems to be designed to make it hard to read.
Here it is tidied up, auto-formatted and in code tags.

int led = 13;
const int bluetooth = 11;
int ledState = LOW; // ledState used to set the LED
long previousMillis = 0; 
long interval = 0; 
int lamp = 12; 

void setup() 
{
  pinMode(led, OUTPUT); 
  pinMode(lamp, OUTPUT); 
  pinMode(bluetooth, OUTPUT); 
} 

void loop() 
{ 
  digitalWrite(bluetooth, HIGH); 
  unsigned long currentMillis = millis(); 
  if(currentMillis - previousMillis > interval) 
  { 
    previousMillis = currentMillis; 
    if (ledState == LOW)
    {
      ledState = HIGH; 
    }
    else 
    {
      ledState = LOW; 
    }
    digitalWrite(bluetooth, ledState); 
  } 

  digitalWrite(led, HIGH); 
  delay(5000); 
  digitalWrite(led, LOW); 
  delay(5000);
  digitalWrite(lamp, HIGH); 
  delay(5000); 
  digitalWrite(lamp, LOW); 
  delay(5000); 
}

As to your problem, have a look at Gammon Forum : Electronics : Microprocessors : How to do multiple things at once ... like cook bacon and eggs