Maybe this is a stupid question, but why is it such a big problem? I don't know much about technology, but i'm thinking since a while, that a simple bimetal trip could keep the herbs from combusting. the same mechanism the iolite and wispr work with, i believe. Can't this be used for an ecig somehow? Another idea would be to program a heating interval, that stops heating from time to time automatically, so that the herb chamber never gets too hot. Might take a lot of time to find such an interval that works with different herbs, but i think that can be done with a lot of temperature measuring. Maybe someone knows why these things can't work. I'm not an engineer and could never implement such things, so I might be wrong, for sure.