Hey all. I'm looking for a few blades who are pretty good with electronic circuits and such. I want to improve my bong by adding a water level sensor, and smoke detector .. The water sensor will just light a small LED at correct water level. a The smoke detector will also light a small LED at a certain smoke concentration. It would be cool as fuck because I've never heard of it.. And this isn't a 'Because I need' thing. It's a 'Because I CAN' type thing, ya know... Just combining two things I enjoy. SO, I need some ideas on what to use for the smoke detector. If there a way I can lower the sensitivity in the common household photo-electric smoke detectors? Thanks.