The subject line is “Add a temperature sensor to a wifi chip”. Why would you want to do that? I can think of a few reasons.
- Know what the temperature is in the attic and also use the chip to control an attic fan.
- Know what the temperature of the hot tub water is and have it send you temp alerts if the water starts getting cold, or even worse, too hot.
- Know the dew point which is vital when using a laser engraver which has a water cooled laser tube. Too much condensation means you’ll shorten the life expectancy or the tube or cause it to catastrophically fail.
- Have a remote temp sensor for other rooms.
- Monitor humidity where you store important papers, or cigars or stuff like that.
Now that we know it is useful, let’s do it. This is actually one of the simplest things you can do with an ESP8266 or ESP32 Internet of Things, wifi chip. It isn’t hard at all.
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