Detecting Taps on Microsoft Band with RX and C#

This is a follow on to my original post on using RX with the Band to stream sensor information.

Using the RX streams and some maths to detect (roughly) when a user taps on the band. This allows you to send a notification to the band, for example, saying “I think your home, tap band to turn on your heating”.

Below is the result, I can really easily “await” tap or shake events! You can grab the code here and see how it all works below.

var stream = await band.GetShakeOrTapStream();

await stream.FirstAsync().ToTask();

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Powershell Invoke-WebRequest with a cookie

Nice and quick post here, mainly so I remember when I need it again, this is a quick sample which shows how to make a web call from PowerShell including a cookie.

Most old methods will suggest using the WebClient object but the new (well newer than the WebClient) Invoke-WebRequest commandlet is a much nicer, in my opinion.

It takes a bit of fooling around to get this up and running so wanted to share.

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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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