variable off time of LED.

Projects Programming
1

How would i blink an led with a 1 second ON time and a variable OFF time controlled by a on/off switch. When the switch is 0, blink for 1 second every 1 min and when the switch reads 1, blink for 1 second every 2 min.

like using a DIP switch to do different things but in my case just one switch will be used.

Any help would be great thank you!

2

From the sticky "Read this before posting"

"Make an informative subject description, not "help me, I'm a noob", nor something in all capitals. Try to avoid saying "urgent". That's your problem, not ours."

I'd say you need to be looking at Arduino programming...

3

evanmars:
From the sticky "Read this before posting"

"Make an informative subject description, not "help me, I'm a noob", nor something in all capitals. Try to avoid saying "urgent". That's your problem, not ours."

I'd say you need to be looking at Arduino programming...

Thanks Guy!

4

So i found this example code and it basically blinks an led. i can set the on time and also i can set the off time.

#define LED_PIN 13
#define LED_ON 1000       //milliseconds
#define LED_OFF 9000

unsigned long ms;        //time from millis()
unsigned long msLast;    //last time the LED changed state
boolean ledState;        //current LED state

void setup(void)
{
    pinMode(LED_PIN, OUTPUT);
}

void loop(void)
{
    ms = millis();
    blinkLED();
}

void blinkLED(void)
{
    if (ms - msLast > (ledState ? LED_ON : LED_OFF)) {
        digitalWrite(LED_PIN, ledState = !ledState);
        msLast = ms;
    }
}

How could i modify this to change the off time of the led? when the switch is low than led_off = 59000, and when switch is high led_off = 118000

5

Define a pin for your switch input
In your loop() read the state of the input
If it is HIGH set LED_OFF to 118000, else set it to 59000

6

evanmars:
Define a pin for your switch input
In your loop() read the state of the input
If it is HIGH set LED_OFF to 118000, else set it to 59000

Ok I got this far....

#define LED_PIN 13
#define SWITCH_PIN 2
#define LED_ON 1000       //milliseconds
#define LED_OFFI 59000
#define LED_OFFII 118000

unsigned long ms;        //time from millis()
unsigned long msLast;    //last time the LED changed state
boolean ledState;        //current LED state
boolean switchState;

void setup(void)
{
    pinMode(LED_PIN, OUTPUT);
    pinMode(SWITCH_PIN, INPUT);
    Serial.begin(9600);
}

void loop(void)
{
    ms = millis();
    blinkLED();
   
}

void blinkLED(void)
{
  switchState=digitalRead (SWITCH_PIN);
  Serial.print(switchState);
    if (ms - msLast > (ledState ? LED_ON : LED_OFFI)) {
        digitalWrite(LED_PIN, ledState = !ledState);
        msLast = ms;
    }
}

How can I integrate switchState into my if statements?

7

EDIT: as of now it prints switchState to the serial monitor as 0 or 1.

8

if (switchState==1)
{
LED_OFF = 118000;
else
LED_OFF = 59000;
}

9

evanmars:
if (switchState==1)
{
LED_OFF = 118000;
else
LED_OFF = 59000;
}

I think this works!

#define LED_PIN 13
#define SWITCH_PIN 2
#define LED_ON 1000       //milliseconds

unsigned long LED_OFF;
unsigned long ms;        //time from millis()
unsigned long msLast;    //last time the LED changed state
boolean ledState;        //current LED state
boolean switchState;

void setup(void)
{
  pinMode(LED_PIN, OUTPUT);
  pinMode(SWITCH_PIN, INPUT);
  Serial.begin(9600);
}

void loop(void)
{
  ms = millis();
  offTimeSet();
  blinkLED();

}
void offTimeSet(void)
{
  if (switchState == 1)
  {
    LED_OFF = 118000;
  }

  else
    LED_OFF = 59000;
}

void blinkLED(void)
{
  switchState = digitalRead (SWITCH_PIN);
  Serial.print(switchState);
  if (ms - msLast > (ledState ? LED_ON : LED_OFF)) {
    digitalWrite(LED_PIN, ledState = !ledState);
    msLast = ms;
  }
}

Now to get more functionality out of it!

Ill be back with more questions....