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Timestamping the data
#6
(11-17-2018, 06:17 PM)jbshute Wrote:
(11-17-2018, 08:43 AM)Sebastian Staacks Wrote: Yes, it is the creation time, but since phyphox gives data relative to the start of the experiment, you don't get any info about the uptime. The best synchrization at the moment is probably starting with your script and storing the start time of your controlling machinę. Unless you measure over a very long duration you do not need to sync the clock of the phone (or the measurement timestamp) and the clock of your controller.

O Yeah, I am looking to record from like 100-10,000 devices at the same time for several days straight. I want to align them all the best I can down to hopefully millisecond range. I am working on some tricks for how to get a distributed sync pulse across geographic territories, but I haven't settled on anything yet.

I would like to run a physics experiment where I have people across the world put their cell phones on the ground and we poll the accelerometer data at maximal sampling rate. Then use this geographically distributed local sensor mesh of acceleration measurements to try to predict the data measured from government seismic activity monitoring systems

Any update on this thread? I need synchronization between more than one device in frequency.
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Messages In This Thread
Timestamping the data - by jbshute - 11-11-2018, 04:15 AM
RE: Timestamping the data - by Sebastian Staacks - 11-11-2018, 11:02 AM
RE: Timestamping the data - by jbshute - 11-13-2018, 05:05 AM
RE: Timestamping the data - by Sebastian Staacks - 11-17-2018, 08:43 AM
RE: Timestamping the data - by jbshute - 11-17-2018, 06:17 PM
RE: Timestamping the data - by YvesD - 11-20-2019, 11:00 PM

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