&quot;...wifi-enabled microcontroller for _$3_...&quot; have been available (in volume) for, at least, a few years now. I&#x27;m not sure why, all of a sudden, this is such a promising solution on the most trivial of problems.<p>As an engineer in this industry, these companies often seem like carpetbaggers, attempting to enter niche markets they know little of, with a solution who&#x27;s only merit is it&#x27;s hype.