codes for mq2, mq3, mq4, mq5, mq6, mq7, mq8, mq9, mq135
codes for mq2, mq3, mq4, mq5, mq6, mq7, mq8, mq9, mq135 gas sensors
mqsensors.docx contains the equations (temperature and humidity independent) that i have obtained based on the sensitivity characteristics graphs provided in the datasheets.