There seem to be a small handful of people using raspberry pi or arduino to control viv equipment. There aren't any viv controllers marketed currently AFAIK
Most folks seem to be decidedly no-tech. Gauging humidity by watching viv inhabitants and adjusting through misting schedules and ventilation works well. Among the more common humidity threads here seem to be those regarding newer hobbyists freaking out over aberrant hygrometer readings.
IR temp guns are ideal temperature monitors, and controlling temp by controlling ambient temps is effective.
My reef and planted tanks run Neptune Apexes (Apices?), but frog vivs are so much more set-it-and-forget-it that controllers are just a novelty (my opinion, which is sure to offend someone