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How to Execute a Timed LED On/Off Sequence Using millis() Function

Hello ,I’m struggling with a problem. I want to execute a sequence of turning an LED on and off, but not just a simple on/off; I want a timed sequence that turns the LED on and off at specific intervals. My requirement is to use

millis()

millis()

because other actions need to run in parallel.

Here’s what I’ve done:

(currentMillis - timer2 >= 1000 && currentMillis - timer2 < 1100) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 1100 && currentMillis - timer2 < 1500) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 1500 && currentMillis - timer2 < 2000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 2000 && currentMillis - timer2 < 3000) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 3000 && currentMillis - timer2 < 5000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);

(currentMillis - timer2 >= 1000 && currentMillis - timer2 < 1100) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 1100 && currentMillis - timer2 < 1500) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 1500 && currentMillis - timer2 < 2000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 2000 && currentMillis - timer2 < 3000) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 3000 && currentMillis - timer2 < 5000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);

But this isn’t working as expected. Sequentially, it should look like:
- from 0 to 1000 ms = off
- from 1000 to 1100 ms = on
- from 1100 to 1200 ms = off
- from 1200 to 1500 ms = on
- etc.
Where am I going wrong?

DIIS

DevHeads IoT Integration Server•2y ago•

1 reply

Camila_99$$

How to Execute a Timed LED On/Off Sequence Using millis() Function

millis()

millis()

because other actions need to run in parallel.

Here’s what I’ve done:

(currentMillis - timer2 >= 1000 && currentMillis - timer2 < 1100) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 1100 && currentMillis - timer2 < 1500) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 1500 && currentMillis - timer2 < 2000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 2000 && currentMillis - timer2 < 3000) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 3000 && currentMillis - timer2 < 5000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);

(currentMillis - timer2 >= 1000 && currentMillis - timer2 < 1100) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 1100 && currentMillis - timer2 < 1500) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 1500 && currentMillis - timer2 < 2000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);
(currentMillis - timer2 >= 2000 && currentMillis - timer2 < 3000) ? digitalWrite(motor, HIGH) : digitalWrite(motor, LOW);
(currentMillis - timer2 >= 3000 && currentMillis - timer2 < 5000) ? digitalWrite(motor, LOW) : digitalWrite(motor, HIGH);

How to Execute a Timed LED On/Off Sequence Using millis() Function

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