#include "MQ6.h" MQ6::MQ6(uint8_t pin) : BaseMQ(pin) { } MQ6::MQ6(uint8_t pin, uint8_t pinHeater) : BaseMQ(pin, pinHeater) { } unsigned long MQ6::readLPG() { return readPpm(-0.42, 2.91); } int MQ6::readPpm(float a, float b) { float ratio = readRs()/_ro; return pow(M_E, (log(ratio)-b)/a); }