I am new in Blynk application. And I was planning to create a Monitoring system, one of the part is the temperature and humidity sensor. I was successfully interfaced on my phone using the app. But my question is, does this data being collected stored in a server automatically or do I have to take some action to do that.
Data written to a virtual pin, using the Blynk.virtualWrite, is buffered for 1 minute then the values received during that minute are averaged and committed to the database as one record.
This happens automatically.
If the data is being viewed via the SuperChart widget then the three dots in the bottom right allow you to export the data.
The Reports widget can also be used to extract the data. In both cases the results are emailed to you asa compressed file.
As I said in reply to your other topic, if you are using the Blynk cloud servers then although historical data can be viewed in Superchart, the exported data only goes back for around 10 days.
Here’s the 1 year view of some of my environmental data…
If you were running a local server then I believe that there are ways to extract more data (but I don’t run a local server). I believe that it’s also necessary to explicitly turn on data logging when you create the local server, as it can consume lots of storage space.
Pete.
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