How to delete delay

Using Arduino Programming Questions
1

i want to delete the delay but i dont know how for my rc car project

int ch1; //knipper lichten            stuur
int ch2; //rem ligt                   gas
int ch3; //all knipper lichten        switch 2
int ch4; //lapen groot en normaal     switch 1
int ledpinr = 2;
int ledpinl = 3;
int normaallicht = 4;
int grootlicht = 5;
int achteruitrijlicht = 7;
int remlicht = 6;


void setup() {
  pinMode(13, INPUT);
  pinMode(12, INPUT);
  pinMode(11, INPUT);
  pinMode(10, INPUT);
  pinMode(ledpinr, OUTPUT);
  pinMode(ledpinl, OUTPUT);
  pinMode(normaallicht, OUTPUT);
  pinMode(grootlicht, OUTPUT);
  pinMode(remlicht, OUTPUT);
  pinMode(achteruitrijlicht, OUTPUT);
  Serial.begin(9600);
}

void loop() {
ledkniperlicht();
lampenklijn();
lampengroot();
remlichten();
achteruitrijlichten();
gevaarenlichten();
ch1 = pulseIn(13, HIGH, 25000);
ch2 = pulseIn(10, HIGH, 25000);
ch3 = pulseIn(12, HIGH, 25000);
ch4 = pulseIn(11, HIGH, 25000);
Serial.print(F("ch 1 "));
Serial.println(ch1);
Serial.print(F("ch 2 "));
Serial.println(ch2);
Serial.print(F("ch 3 "));
Serial.println(ch3);
Serial.print(F("ch 4 "));
Serial.println(ch4);
}

void ledkniperlicht() {
   if ((ch1) > 1550) {
        digitalWrite(ledpinr, HIGH);
        delay(500); 
        digitalWrite(ledpinr, LOW);
        delay(200);
   }
   else if ((ch1) < 1450) {
        digitalWrite(ledpinl, HIGH);
        delay(500); 
        digitalWrite(ledpinl, LOW);
        delay(200);
   }
}                                                                                                                                                                                              
void lampenklijn() {
  if ((ch4) > 1100) {
    digitalWrite(normaallicht, HIGH);
  }
  else if ( (ch4) < 1000) {
    digitalWrite(normaallicht, LOW);
  }
}
void lampengroot() {
  if ((ch4) > 1600) {
    digitalWrite(grootlicht, HIGH);
  }
  else if ( (ch4) < 1500) {
    digitalWrite(grootlicht, LOW);
  }
}
void remlichten() {
  if ((ch2) > 1480 && (ch2) < 1520) {
    digitalWrite(remlicht, HIGH);
  }
  else if ((ch2) < 1440) {
    digitalWrite(remlicht, LOW);
  }
  
  else if ((ch2) > 1560) {
    digitalWrite(remlicht, LOW);
  }
}
void achteruitrijlichten() {
  if ((ch2) > 1540) {
    digitalWrite(achteruitrijlicht, HIGH);
  }
  else if ((ch2) < 1530) {
    digitalWrite(achteruitrijlicht, LOW);
  }
}
void gevaarenlichten() {
  if ((ch3) > 1800) {
        digitalWrite(ledpinl, HIGH);
        digitalWrite(ledpinr, HIGH);
        delay(500); 
        digitalWrite(ledpinl, LOW);
        digitalWrite(ledpinr, LOW);
        delay(200);
   }
   else if ((ch3) < 1000) {
        digitalWrite(ledpinl, HIGH);
        digitalWrite(ledpinr, HIGH);
        digitalWrite(normaallicht, HIGH);
        digitalWrite(grootlicht, HIGH);
        digitalWrite(achteruitrijlicht, HIGH);
        digitalWrite(remlicht, HIGH);
        delay(500); 
        digitalWrite(ledpinl, LOW);
        digitalWrite(ledpinr, LOW);
        digitalWrite(normaallicht, LOW);
        digitalWrite(grootlicht, LOW);
        digitalWrite(achteruitrijlicht, LOW);
        digitalWrite(remlicht, LOW);
        delay(200);
   }
}
2
  1. Locate the line with delay(...); in your code
  2. Place cursor at the end of line
  3. Press Backspace key repeatedly until the line is clear
4 Likes
3

Do you mean that you want to replace delay() with something that would not block the operation of the program ?

4

yes

5

You will need to completely rewrite your sketch in order to do that. Please explain exactly what the sketch should do

6

it must to do in void ledknipperlicht if ch1 higher than 1550 then ledpinr should be flashing and ch1 lower than 1450 then ledpinl should be flashing

7

You need to do two things,
i) rewrite your sketch as 'tasks' see my tutorial on Multi-tasking in Arduino
ii) use a 'timer' based on the millis() function instead of delays()
See my tutorial How to write Timers and Delays in Arduino which uses a simple millisDelay class to keep track of what the timers are doing.
multitaskingDiagramSmall

8

@pasie If what you want to do is to flash an LED when a certain condition is met then that is comparatively easy

When the condition is met set a boolean to true, then later in loop() test the value of the boolean and if it is true blink the LED using millis() for timing

  if (blinking)
  {
    if (currentTime - lastBlinkTime >= blinkInterval)
    {
      digitalWrite(ledPin, !digitalRead(ledPin));
      lastBlinkTime = currentTime;
    }
  }
9

Another way to get a blinking pattern without delay():

   if ((ch1) > 1550)
  {
    // ON for the first 500 ms of each 700 ms interval
    digitalWrite(ledpinr, (millis() % 700) < 500);
    digitalWrite(ledpinl, LOW);
  }
  else if ((ch1) < 1450)
  {
    // ON for the first 500 ms of each 700 ms interval
    digitalWrite(ledpinl, (millis() % 700) < 500);
    digitalWrite(ledpinr, LOW);
  }
  else
  {
    // Turn off the blinkers if neither is selected
    digitalWrite(ledpinr, LOW);
    digitalWrite(ledpinl, LOW);
  }

The same will work for your other pattern.

1 Like
10

thx you are the best

11

This topic was automatically closed 120 days after the last reply. New replies are no longer allowed.