In other videos, people are connecting 'Do' signal wire to minus of led & buzzer but u r joining with plus of led & buzzer. Which will work better. Please tell me

How can we use this in industry. Like can we connect 230 volt hooter with any board other than arduino for MQ-137 Sensor

*I tried but when I connect to battery sensor light getting off with in 2 seconds, any body tell why it's getting switch off*

What power supply are you using

Can we use the small buzzer

I used mq 2 sensor after piset when im keeping smoke near it the buzzer is not coming 😢any solution plz plz

I guess 'O' means Out, not Zero. "AO" is Analog Out and "DO" is Digital Out

Great

Is it compulsory to use buzzer?.. Or we can use the sensor without it?

@dipanjan100

8 ай бұрын

Not compulsory, it has been used for notification only

Sir can we give the connections in the breadboard

@dipanjan100

Ай бұрын

Will upload soon

I assembled circuit as shown in the video It worked well,but in 2 hrs the 9v battery was fully discharged could you please give a solution?

@dipanjan100

Жыл бұрын

The internal heater consumes maximum current, which can not be avoided, use lithium ion high mahal battery or supply from AC power line through a 5V DC supply

@futurethought566

11 ай бұрын

@@dipanjan100 *I tried but when I connect to battery, sensor light getting off with in 2 seconds, any body tell why it's getting switch off*

@futurethought566

11 ай бұрын

@@dipanjan100 *can we use smart ph charger*

Hello My friend. Can it detect cigarrete smoking?

@dipanjan100

Ай бұрын

Yes you can

Sir its not working, the heat is not setting up , i am using 3.7 volt li,lion battery

@dipanjan100

Ай бұрын

Use 5V, after buying new sensor u need to pre heat for 48 hour

Buzzer active o pasivo?

@dipanjan100

5 ай бұрын

Active device

Can we use mq5 sensor in place of mq2 sensor

@dipanjan100

Жыл бұрын

Yes u can

can i use 9v battery?

@dipanjan100

9 ай бұрын

By 9V internal sensor heater may damage

@dipanjan100

9 ай бұрын

If u want use 9v baytery, use 5v regulator IC 7805

Thank you sir for the explanation

@dipanjan100

Жыл бұрын

Always welcome

@futurethought566

11 ай бұрын

@@dipanjan100 *I tried but when I connect to battery, sensor light getting off with in 2 seconds, any body tell why it's getting switch off*

sir how long should we wait after giving 5v to the MQ3 sensor

@dipanjan100

7 ай бұрын

Approximately 60 sec

fAKE

@dipanjan100

7 ай бұрын

Do the experiment and then put your comments

😂😂😂😂chor