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5. Usage
5.1
Suggest Reading for Starter
Download Arduino and install Arduino driver
Getting Started with Seeeduino
5.2
Hardware Installation
Grove products have a eco system and all have a same connector which can plug onto the
. Connect this module to the A0 port of Base Shield, however, you can also connect Gas
sensor to Arduino without Base Shield by jumper wires.
Arduino UNO
Gas Sensor
5V
VCC
GND
GND
NC
NC
Analog A0
SIG
You can gain the present voltage through the SIG pin of sensor. The higher the concentration of
the gas, the bigger the output voltage of the SIG pin. Sensitivity can be regulated by rotating the
potentiometer.
Please note the best preheat time of the sensor is above 24 hours.
For the detailed
information about the MQ-3 sensor please refer to the datasheet.
