Hello everyone, I hope you all are doing great. In today's tutorial, we are gonna have a look at How to design a Smoke Detector with Arduino . Its quite a simple project but if you are working on any security project then you must add this feature in it. You should also download this Gas Sensor Library for Proteus , and design its simulation. Libraries MQ-2 Simulation Libraries Latest library: Gas Sensor Library for Proteus V2.0 (October 2026): an analog MQ-2 model with datasheet curves, heater warm-up, Simple and Advance devices and an Arduino demo Other gas and fire sensors: MQ-3 / MQ-7 / MQ-135 · MH-Z19B CO2 · PMS5003 · CCS811 · Flame Sensor Helping Tools Serial Monitor Advance : a serial terminal window for the UART of your board Serial Monitor Expert : the serial monitor with extra de ...