Apps, Coding, How to, MicrosoftBand, Windows Phone

Streaming Sensor data from the Microsoft Band using Reactive Extensions and C#


So I’ve recently been working on programming for the Microsoft Band. In particular looking at streaming sensor data back from the band in realtime to process on my Windows Phone phone and, depending on the data, push up to a cloud service.

Out of the box the Band SDK will give you a set of SensorManagers to which you can hook up .NET EventHandlers and then do what you will with the output.

However, working with streams of data in .NET using EventHandlers is a pain and there is a much nicer technology for dealing with streams -> Reactive Extensions. (It’s a pretty bit topic, if you haven’t heard of it I’d strongly recommend reading up and having a play.)

So I set about writing a little wrapper to take the input from the Band’s SensorManagers and create an IObservable stream of events.

This lets you do awesome stuff, like doing linq queries over the realtime data stream or time based operations, among other things.

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