Smoke and Gas Sensors
The Interactive Mud Hut was extremely useful in making me realise how simple it is to interface the sensor to Arduino. The tough part now will be programming the visuals.
Tests on the sensor:
It reacts to cigarrette smoke, which is good as I intend to place this sensor at the smoking area outside a club. The smoke will then affect visuals. That's the basic idea that I have right now. Will update soon.