I don’t want to put you off or hijack your thread, but if you are asking our opinion whether to work more on this to put it to the market… I’d consider that there is probably number of competing systems already… Some are also open (that I consider very convenient way for tech-savvy users). Two I know of are presented here on OG: Growmat and thoroughly tested Growduino. Last time I’ve visited cannabis fair there were probably two more but I don’t remember the names.
I agree that there is a future in these systems. You could log all relevant values (pH, temps, EC, …) and report them into some cloud app to compare results with other growers. This could lead to massive improvements (one could be inspired by success of others). I think that few companies are really aware of this and want to take their share of the market. This could be huge not only for marijuana growing.