Frequently Asked Questions
Please check the FAQ first. If your question is not here or you wish to request for new features or to feedback, then email - Thanks.What are the pre-requisites?
- Android phone
- Chrome browser
The web sensor api is ONLY supported by Chrome browsers on Android phones which have 2.5 billion monthly active devices in 2019.How to check that it is working?
- Click Start
- Shake the phone - data will be displayed on screen to show it is recording
- Click Stop - graph of data will be displayed
- Click Save to save it to .csv The file name is automatically generated sensor-YYYYMMDDhhmmss.csv (UTC Date/Time)
What is the sampling rate?
50 HzWhat sensor data is read?
Accelerometer - timestamp, x, y, zHow is the timestamp calculated
From the web, it is the awake time in nanoseconds since the last boot (comparable to SystemClock.uptimeMillis()), and not time since Unix epoch.