you can use MQ2 or MQ7 sensor | Microcontroller › Arduino › Alcohol detector and engine block of vehicals cause of alcohol › you can use MQ2 or MQ7 sensor July 11, 2018 at 8:53 am #14855 Ashutosh BhattParticipant you can use MQ2 or MQ7 sensor it detects all types of gases. interface gas sensor with arduino and then get the desire result
