Skip to main content

Lighting up my DasKeyboard with Blood Sugar changes using my body's REST API

imageI've long blogged about the intersection of diabetes and technology. From the sad state of diabetes tech in 2012 to its recent promising resurgence, it's clear that we are not waiting.

If you're a Type 1 Diabetic using a CGM - a continuous glucose meter - you'll want to set up Nightscout so you can have a REST API for your sugar. The CGM checks my blood sugar every 5 minutes, it hops via BLE over to my phone and then to the cloud. You'll want your sugars stored in cloud storage that YOU control. CGM vendors have their own cloud, but we can easily bridge over to a MongoDB database.

I run Nightscout in Azure and my body has a REST API. I can do an HTTP GET like this:

/api/v1/entries.json?count=3

and get this

[

{

_id: "5c6066d477b2a69a0a7810e5",

sgv: 143,

date: 1549821626000,

dateString: "2019-02-10T18:00:26.000Z",

trend: 4,

direction: "Flat",

device: "share2",

type: "sgv"

},

{

_id: "5c6065a877b2a69a0a7801ce",

sgv: 134,

date: 1549821326000,

dateString: "2019-02-10T17:55:26.000Z",

trend: 4,

direction: "Flat",

device: "share2",

type: "sgv"

},

{

_id: "5c60647b77b2a69a0a77f381",

sgv: 130,

date: 1549821026000,

dateString: "2019-02-10T17:50:26.000Z",

trend: 4,

direction: "Flat",

device: "share2",

type: "sgv"

}

]

I can change the URL from a .json to a .txt and get this

2019-02-10T18:00:26.000Z    1549821626000    143    Flat    

2019-02-10T17:55:26.000Z    1549821326000    134    Flat    

2019-02-10T17:50:26.000Z    1549821026000    130    Flat

The "flat" value at the end is part of an enum that can give me a generalized trend value. Diabetics need to manage our sugars at the least hour by house and sometimes minute by minute. As such it's super important that we have "glanceable displays." That means anything at all that gives me a sense (a sixth sense, if you will) of how I'm doing.

That might be:

I got a Das Keyboard 5Q recently - I first blogged about Das Keyboard in 2006! and noted that it's got it's own local REST API. I'm working on using their Das Keyboard Q software's Applet API to light up just the top row of keys in response to my blood sugar changing. It'll use their Node packages and JavaScript and run in the context of their software.

However, since the keyboard has a localhost REST API and so does my blood sugar, I busted out this silly little shell script. Add a cron job and my keyboard can turn from orange (low), to green, yellow, red (high) as my sugar changes. That provides a nice ambient notifier of how my sugars are doing. Someone on Twitter said "who looks at their keyboard?" I mean, OK, that's just silly. If my entire keyboard turns run I will notice it. Again, ambient. I could certainly add an alert and make a klaxon go off if you'd like.

This local keyboard API is meant to send a signal to a single zone or key, so it's hacky of me (and them, really) to make 100+ REST calls to color the whole keyboard. But, it's a localhost call and it's not that spendy. This will go away when I move to their new API. Here's a video of it working.

What are some other good ideas for ambient sugar alerts? An LCD strip around the monitor (bias lighting)? A Phillips Hue smart light?

Consider also that you could use the glanceable display idea for pulse, anxiety, blood pressure - anything in your body you could hook up to in real- or near-realtime.

Sponsor: Get the latest JetBrains Rider with Code Vision, Rename Project refactoring, and the Assembly Explorer. Improved support for C#, VB.NET, F#, TypeScript, and Angular is all included.


© 2018 Scott Hanselman. All rights reserved.
     


from Scott Hanselman's Blog http://feeds.hanselman.com/~/596462438/0/scotthanselman~Lighting-up-my-DasKeyboard-with-Blood-Sugar-changes-using-my-bodys-REST-API.aspx
Labels:

Comments

Post a Comment

Popular posts from this blog

dotnet sdk list and dotnet sdk latest

Can someone make .NET Core better with a simple global command? Fanie Reynders did and he did it in a simple and elegant way. I'm envious, in fact, because I spec'ed this exact thing out in a meeting a few months ago but I could have just done it like he did and I would have used fewer keystrokes! Last year when .NET Core was just getting started, there was a "DNVM" helper command that you could use to simplify dealing with multiple versions of the .NET SDK on one machine. Later, rather than 'switching global SDK versions,' switching was simplified to be handled on a folder by folder basis. That meant that if you had a project in a folder with no global.json that pinned the SDK version, your project would use the latest installed version. If you liked, you could create a global.json file and pin your project's folder to a specific version. Great, but I would constantly have to google to remember the format for the global.json file, and I'd constan
Post a Comment
Read more

R vs Python for Machine Learning

There are so many things to learn before to choose which language is good for Machine Learning. We will discuss each and everything about R as well as Python and the situation or problem in which situation we have to use which language. Let’s start Python and R are the two most Commonly used Programming Languages for Machine Learning and because of the popularity of both the languages Novice or you can say fresher are getting confused, whether they should choose R or Python language to commence their career in the Machine learning domain. Don’t worry guys through this article we will discuss R vs Python for Machine Learning. So, without exaggerating this article let’s get started. We will start it from the very Basics things or definitions. R vs Python for Machine Learning Introduction R is a programming language made by statisticians and data miners for statistical analysis and graphics supported by R foundation for statistical computing. R also provides high-quality graphics and
1 comment
Read more

Top Tips For PCB Design Layout

Are you thinking about designing a printed circuit board? PCBs are quite complicated, and you need to make sure that the layout that you choose is going to operate as well as you want it to. For this reason, we have put together some top tips for PCB design layout. Keep reading if you would like to find out more about this. Leave Enough Space One of the most important design tips for PCB layout is that you need to make sure that you are leaving enough space between the components. While many people might think that packing components closely is the best route to take, this can cause problems further down the line. This is why we suggest leaving extra space for the wires that will spread. This way, you’ll have the perfect PCB design layout. Print Out Your Layout Struggling to find out if your components sizes match? Our next tip is to print out your layout and compare the printed version to your actual components. Datasheets can sometimes come with errors, so it doesn’t hurt to do
1 comment
Read more