Buzzer and Flame Sensor not working

Using Arduino Sensors
1

Hi all, i am recently working in a project where i do implement multiple sensors for a smart house. So far no issues at all, but today my buzzer and Flame sensor are acting strangely.

Please bare with me as this is my first post here.

The idea is that when the Flame Sensor is activated, the buzzer to start as well . But it seems that it is doing it all the opposite.

If the Flame sensor is off, the Buzzer starts and when the Sensor flame is on the buzzer stops. Could you perhaps pin-point me on what i am doing wrong? Working with Relays as well.

pinMode(OUTPUT_ALARMA_PIN, OUTPUT); (for buzzer)

pinMode(INPUT_SENSOR_FLACARA_PIN, INPUT); (for flame sensor)

digitalWrite(OUTPUT_ALARMA_PIN, HIGH);

digitalWrite(OUTPUT_ALARMA_PIN, digitalRead(INPUT_SENSOR_FLACARA_PIN));
g_alarma_status = digitalRead(INPUT_SENSOR_FLACARA_PIN);

g_lastTick = millis();
}

2

Welcome to the forum

Is the relay active LOW, ie it isturned on when the input is LOW ? That is a very common way for them to work

3

One pin point is not posting ALL the code.

Another pin point is posting a code snippet without code tags.

pinMode(OUTPUT_ALARMA_PIN, OUTPUT); (for buzzer)

pinMode(INPUT_SENSOR_FLACARA_PIN, INPUT); (for flame sensor)

digitalWrite(OUTPUT_ALARMA_PIN, HIGH);

digitalWrite(OUTPUT_ALARMA_PIN, digitalRead(INPUT_SENSOR_FLACARA_PIN));
g_alarma_status = digitalRead(INPUT_SENSOR_FLACARA_PIN);

g_lastTick = millis();

like so.

4

The relay is Low trigger, so HIGH should be off, i have tried to change it to digitalWrite(OUTPUT_ALARMA_PIN, LOW), but it still the same outcome

5

Thank you so much! Will do so moving forward.

6

I am not clear whether the relay is behaving as you expect and you have not explained how the buzzer is controlled by the relay. For instance, which pair of relay contacts NO/COMMON or NC/COMMON are you uisng ?

7

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