I do not want to look polemic, but I am not convinced by Mr. Andosca's argument regarding cloth dryers.
I agree that this development could save power and money and I wish every dryer could feature those sensors. But on a practicle point of view, I do not see how a consumer would accept to pay a premium on a dryer for something which is not necessarily of huge interest. And I do not see why a dryer manufacturer would decide to include a new, non-mature device in its machine without a demand from the market. Appart from a governmental decision making mandatory such devices in dryers, I do not think there will ever be a market pull for this technology. This is typical techno-push.
This kind of reasoning applies to a lot of examples regarding energy harvesting!
Dryers already monitor the clothes and switch off when they are dry. I just looked on Sears.com and the cheapest dryer I found has this feature: Auto Dry monitors air temperature with an automatic thermostat and ends the cycle when clothes are properly dried
The clothes dryer costs of the order of $300 - $600. Why would a "premium" of $5 be a problem?
Such consumer IoT devices will have to be sold for the sort of money that many people pay daily for a latte, and there is no reason why that price point cannot be achieved. Unlike the 5 cent RFID tag, there is still a real business in products which cost a few dollars each (with volumes eventually in the hundreds or millions or more).
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