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 analog data from these sensors and ...

This project will teach you about sensors, data processing, and safety applications. It really is a hands-on way to learn electronics and programming while building a useful gadget. Get your Arduino ...

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.