Copyright © Shimmer 2017
Realtime Technologies Ltd Shimmer User Manual
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1. Introduction
Shimmer is a small wireless sensor platform well suited for wearable applications. The integrated
kinematic sensors, large storage and low-power standards based communication capabilities enable
emerging applications in motion capture, long-term data acquisition and real-time monitoring.
Shimmer3, the latest revision of the Shimmer platform includes improvements to the original design
based on years of field trials and deployments. We have made improvements in wearability while
expanding capabilities with a flexible kinematic sensor array, more powerful CPU and improved user
interface. The terms ‘Shimmer’ and ‘Shimmer3’ are used interchangeably in this manual, to refer to
the Shimmer3 device. Much of the information applies generically to Shimmer Products.
If you are new to the Shimmer platform, there is Quickstart information in Section 2, whilst Section 3
gives a high level overview of the Shimmer platform. Section 2 (Quickstart) is essential reading,
Section 3 (Shimmer Platform Overview) is recommended reading and the remaining sections are best
browsed based on personal interest and development goals. For details on legacy devices please
refer to Shimmer Clock Drift
Like many embedded devices, the clock on the Shimmer device is prone to drift. Laboratory
experiments have indicated that Shimmer-to-Shimmer clock drift is variable and can be up to 12
µs/s. To equate this to longer recording periods 12µsec/sec is equivalent to 0.72 ms/min, 43
ms/hour and 1.04 s/day.
Appendix B - Legacy Support.
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