Gravity: MQ9 Gas Sensor

Q: <p>Hi,can use 9V battery directly supply voltage to the sn-mq9 sensor? or have to use voltage regulator to step down to 5v?</p>

<p>Hi, this is sensor analog value, you could check its datasheet for the characteristic curve</p>

1. Example Code for Arduino-Gas Value Reading

This article offers a step-by-step guide on reading gas values using Arduino, complete with sample code and wiring diagrams for easy sensor integration.

Num	Label	Description
1	Output	Signal Output
2	5V	Power
3	GND	GND

Gravity: MQ9 Gas Sensor

Specification

Pinout