#include "MQ9.h" MQ9::MQ9(uint8_t pin) : BaseMQ(pin) { } MQ9::MQ9(uint8_t pin, uint8_t pinHeater) : BaseMQ(pin, pinHeater) { } unsigned long MQ9::readLPG() { return readScaled(-0.48, 3.33); } unsigned long MQ9::readMethane() { return readScaled(-0.38, 3.21); } unsigned long MQ9::readCarbonMonoxide() { return readScaled(-0.48, 3.10); }