kylecorry31 / Trail-Sense

An Android app that uses your phone's sensors to assist with wilderness treks or survival situations.
https://kylecorry.com/Trail-Sense/
MIT License
1.05k stars 69 forks source link

Tool: Cricket thermometer #2427

Open kylecorry31 opened 3 weeks ago

kylecorry31 commented 3 weeks ago

Sounds odd, but Dolbear's law shows the current temperature can be estimated using the frequency of cricket chirps.

NOAA provides a few resources:

And LOC:

NOAA also states that different species of crickets have slightly different frequencies - so maybe vary this by region / let the user calculate/enter their own. Not sure how this holds up across the globe though.

In the future, this could use a microphone to automatically calculate the frequency.

When user taps button, start a counter - they keep tapping as long as they want, temperature will be re-estimated after each tap. If the user goes too long without tapping, then tapping again restarts the count.

In the future, this could use a microphone to automatically calculate the frequency (4800-5000 Hz). image

anaxonda commented 3 days ago

Wow. Great idea.