How to calibrate an MQ-2 gas sensor || Arduino tutorial

In this short tutorial I'm demonstrating how to calibrate an MQ-2 gas sensor and get your readings in ppm units. I'm assuming you don't want to spend hundreds of dollars for a calibration kit. The method shown in this video is based on a piece of Arduino code created and shared for free by a company called Sandbox Electronics. See the original video - How to use gas sensors with Arduino: https://www.youtube.com/watch?v=BIf_mpnsZvY Subscribe to get notified about my new videos: http://www.yo