The SparkFun BOB-08891 is a PCB made for the MQ-3, MQ-4, MQ-6 and MQ-7 gas sensors.
All you need is VCC at 5V, GND, and a resistor to an ADC, that is it.
Schematic design BOB-08891
All you need is VCC at 5V, GND, and a resistor to an ADC, that is it.
Schematic design BOB-08891
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