IOT Internet enabled (IOT) smoke alarm with SMS notification using esp8266, MQ2, ThingSpeak and Twilio ESP8266 based Internet enabled (IOT) smoke and fire alarm to send SMS notification (Twilio) and to trigger alarm with flashing red LED if it detects smoke and leakage of combustible gas using MQ2 gas sensor. Also ThingSpeak analytics is a great bonus. Abhijit Ghosh 4 Sep 2017 ยท 7 min read