OpenAPS is the Open Source Artificial Pancreas System. It offers an ‘open source’, DIY artificial pancreas using make-it-yourself electronics to grab information from a Continuous Glucose Monitor (CGM), data input (carbs, exercise, really anything that would affect blood sugar), and makes changes to an older model insulin pump over a radio frequency. All-in-all a very cool project and a way that many people have greatly improved their diabetes management. You can check out the hashtag on twitter to see some real-time examples of what people are experiencing with it. This is a good one, as of this posting:
5.9 A1C. Lowest I’ve seen since I was diagnosed as a Type 1 Diabetic 8 years ago. All thanks to #OpenAPS – my OSS artificial pancreas!
— Matthew Williams (@mwilliams) September 27, 2017
Reading through the OpenAPS documentation is a little daunting, but I came to the conclusion that I could get started by setting up my own Nightscout server. Nightscout (CGM in the Cloud) is an open source, DIY project that allows real time access to a CGM data via personal website, smartwatch viewers, or apps and widgets available for smartphones. The step-by-step instructions were great! The documentation walks through everything you need to do to get started. Because I use the Dexcom G5, I set up the bridge to Nightscout and started seeing my CGM data within a few minutes.
Serendipitous, you can graph the basal rate with your blood glucose levels, making Dexabasal totally unnecessary. The documentation does omit the parameter for the setup. You can add the following to your app variables:
This is what it looks like when configured (get off my back, I’m recovering from a low):
When I get home from my work travel I’ll confirm that I have the correct version of insulin pump and keep everything documented as I continue through this journey!
You can see how I’m doing at ANY TIME by visiting my Nightscout server.