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
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
Can we use 3.7 volt battery?
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
Great
I used mq 2 sensor after piset when im keeping smoke near it the buzzer is not coming 😢any solution plz plz
*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*
How can we use this in industry. Like can we connect 230 volt hooter with any board other than arduino for MQ-137 Sensor
Yes sir, u need to connect a relay, 9641000372 u can cotact me if u want
Is it compulsory to use buzzer?.. Or we can use the sensor without it?
Not compulsory, it has been used for notification only
What power supply are you using
Can we use the small buzzer
Hello, sir. Is it okay to use MQ6 instead of MQ2? Will it still work if I replace MQ2 with MQ6?
Will work, these are low cost sensors, having poor selectivity, for any deoxidizing gases will respond.
I guess 'O' means Out, not Zero. "AO" is Analog Out and "DO" is Digital Out
I think he was saying "A node" and "D node" technically it is ok
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?
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
@@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*
@@dipanjan100 *can we use smart ph charger*
Sir can we give the connections in the breadboard
Will upload soon
Hello My friend. Can it detect cigarrete smoking?
Yes you can
Buzzer active o pasivo?
Active device
Sir its not working, the heat is not setting up , i am using 3.7 volt li,lion battery
Use 5V, after buying new sensor u need to pre heat for 48 hour
can i use 9v battery?
By 9V internal sensor heater may damage
If u want use 9v baytery, use 5v regulator IC 7805
sir how long should we wait after giving 5v to the MQ3 sensor
Approximately 60 sec
This is fake as camera angle changed while testing.
Can we use mq5 sensor in place of mq2 sensor
Yes u can
fAKE
Do the experiment and then put your comments
😂😂😂😂chor