I am trying to assess how to create a wireless bluetooth (and potentially wi-fi enabled as well) high-temperature thermometer.
I have looked up sensors, namely DHT type, and also ways to run an arduino with battery power.
I am not sure how to have the microcontroller be available via bluetooth without draining battery power. Is this possible?
Also, I'd like the option for the microcontroller to be configured to connect to a local wifi network if it's available. This would happen from the client-side, meaning they'd connect via bluetooth and somehow set the wifi/password through their client device (e.g. smart phone).
I only need temperature readings periodically - say, every 5 or 10 minutes or so. But having the device available to connect via bluetooth, from a smart phone for example, may require constant activity? I'm not sure.
I say high temperature because I plan to use this inside of a sauna, which can reach upwards of 200 degrees fahrenheit. But it seems the DHT sensors I've seen so far have that within their operating temps.
Thanks in advance