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Update README.md

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Ben Jabituya 2020-12-29 16:54:56 +00:00 committed by GitHub
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Monitor Heart Rate Variability using the Bangle.JS
One-time mode:
This will take a HRV measurement over a single approx 20 second period. It will also provide you with a HR reading based on the post-processing of the signal.
This will take a HRV measurement over a single approx 30 second period. It will also provide you with a HR reading based on the post-processing of the signal.
Continuous mode:
This will continually take measurements over 20 second periods every 5 minutes and log them to a CSV file on the Bangle until the watch is reset; this file can then be reviewed in Excel or other apps. The log file is reset each time you restart and select this mode to save on storage. The log file is just 1 line per each 5 minutes showing: timestamp, HR, HRV and sample count.
This will continually take measurements over 30 second periods every 3 and half minutes and log them to a CSV file on the Bangle until the watch is reset; this file can then be reviewed in Excel or other apps. The log file is reset each time you restart and select this mode to save on storage. The log file is just 1 line per each 3 minute cycle showing: timestamp, HR, HRV and sample count.
Note that in both modes, if the watch seems unresponsive, just wait for it to finish its cycle of processing the data, which shouldn’t take longer than a couple of minutes.