HC-SR04 ultrasonic sensor to measure the temperature !

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hi
i trying use hc-sr04 sensor measure temperature,
everybody knows, speed of sound change when temperature change,
so if put @ 7cm denseness sensor, eco time change if temperature goes or down

for example c=10,000/29=344.8 m/s. @ 22.3 temperature

is there try before!?
i think more sensitive tmp36 temperature sensor (or similar)
no contacts, , can put under sun light without having problems of heating or something

it's more easy use tmp36, there snow storm out side  :smiley-roll-blue:
from 4 days, , trying repair heat system  :d  things have
zzzz cold here  :'(

quote from: narzan on jan 07, 2015, 03:30 pm
everybody knows, speed of sound change when temperature change,
and when humidity changes, , atmospheric pressure, , other stuff too.
why don't use simple ds18b20.


Arduino Forum > Using Arduino > Project Guidance > HC-SR04 ultrasonic sensor to measure the temperature !


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