I think the main issue here is not how to do the logging, but how to get the sensor working with Homey. If there isn’t a specific app for it, you can’t use it.
It does not measure at 1hz interval but at temperature changes.
Should do the job too. If there is no measurement you know the te,persture is still the same.
Shelly can handle 3 sensors so if you dont trust one you canmout in all 3 and have a triplecheck
I have yet to connect them to Homey Pro as I would like to devise a plan on how to collect the data first. It seems there are no apps dedicated to these specific devices.
But say I would be able to connect them; how would I go about collecting the data on a 1-second interval? Information on flows auto-disabling seems to be a bit unclear.
Insights (see my post above) will log the data of your sensor automatically.
It will be dependend of the update-rate of your sensor how often it is logged. (Insights logs when a sensor is updated)
Not sure if insights is limited for logging…
This is what my shelly looks like in insights (buildin behaviour of home, no need to do anything)
start a flow with a default time trigger (every x minutes/hours).
Use the Chronograph app to start a transition (60 steps during 1min).
React on the transition steps with a second flow
In this flow you can log the data:
Using Papertrail log into a local log
Using MySQL client to log into a SQL database
If you are using the global date/time tags, you probably will only have date and time values with mm:ss.
To get a correct relation to your transition steps, you have to log these steps in addition to date/time.
For a transition you define a range (from…to) and the number of steps in a timerange. The app is firering a flow trigger for everery step.
Your case would be: from 0 to 59 in 60 steps in 1 minute.