Arduino Gas Sensor Code Description This Arduino code is designed to read data from five gas sensors connected to an Arduino board. The sensors include MQ8, MQ4, MQ9, MQ7, and MQ135. The code reads ...

Smoke Detector using Gas Sensor using arduino A Smoke Detector using a Gas Sensor for Arduino is a prime example of a project that assures beginners and hobbyists in learning how to develop a safety ...

so tinkercad has circuit designand arduno now, a real arduino is $20, IDE is free, fritzing is free and does all the exact same layout stuff locally, you save your files and keep them forever.