Wiring MQ-2 Gas Sensor
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I'm looking at the code provided for this sensor and am a bit confused by this bit on the connections:
* * A H A >>> 5V * B >>> A0 * H >>> GND * B >>> 10K ohm >>> GND * ```
What is A,H, B?
Shouldnt it beVcc -> 5V Gnd -> Gnd A0 -> A0 A0 -> 10k -> GND
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Depends on your sensor.
It yours comes with the board http://www.ebay.co.uk/itm/MQ-Gas-Sensor-Carrier-board-for-MQ3-MQ2-MQ4-MQ5-MQ7-MQ9-MQ6-MQ8-MQ135-arduino-/171387108192?hash=item27e777bb60:g:fv8AAOSwW1ZTxKUzyou do not have to add anything.
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@alexsh1 said:
Depends on your sensor.
you do not have to add anything.
yes and no, you don't have a datasheet for the board... 10K is 10K so you know it
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@epierre said:
@alexsh1 said:
Depends on your sensor.
you do not have to add anything.
yes and no, you don't have a datasheet for the board... 10K is 10K so you know it
Actually, I have the datasheet for my board and this is adjustable resistor
Anyway, I got mine working without any additional 10k resistors. I hope it helps.
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