The LoopDocs website is organized as follows
- Home: What is Loop?
- Intro: Introduction to Loop and LoopDocs
- Requirements: What is needed regardless of build method
- New with Loop 3: Two ways to build
- Set Up: How to set up your Loop app
- Operate: How to use the Loop app
- Troubleshoot: What to do if you're having trouble with the Loop app
- Version: Information about Loop versions, code customization and development
- Nightscout: Loop -specific Nightscout details; Nightscout is an open-source cloud application used by people with diabetes and their caregivers
- FAQs: Pages with safety tips, frequently asked questions and the Glossary
- Translation: Links to Google Translate provided as a convenience, no guaratees about the quality of the translation
It is totally understandable if the thought of building and operating your own Loop app feels intimidating. As you learn the information explained in LoopDocs, this will start feeling more comfortable.
The process for building the Loop app is divided into short segments (sections or pages) in the Build tabs of LoopDocs.
Best Practice: Learn to Build
You are strongly encouraged to build Loop for yourself.
- No links to providers who build Loop as a service are found in LoopDocs
- If you choose to use such a service, before you begin, you should:
- Read LoopDocs
- Know how to Set up and Operate Loop
- Ask what features, if any, available with DIY loop are not available with their service
- These steps are important for your safety
Using a Simulator¶
You can build Loop and practice with a simulated phone, CGM and/or pump. You can "dose" the simulated pump and your real pump at the same time and watch the glucose predictions.
Starting with a simulator can help you decide if you want to move forward with purchasing additional items required to use the app. You can:
- Learn the interface
- Explore glucose predictions and dosing recommendations
Locked Phone or App in Background
Do not expect the simulator to work when the phone is locked or the app is in the background. The app relies on a real insulin pump or a real CGM to wake up the app when the phone is locked or the app is in the background. The simulator cannot do this.
Please review Simulator Build for more information.
Simulator using Browser Build:¶
- No Mac computer required
- Must have a paid Apple Developer ID ($99/year)
- Must have a compatible phone
Simulator using Mac-Xcode Build:¶
- Must have a Mac computer (or virtual machine, Intel chips only)
- Can build the simulator with a free Apple Developer ID
- Build to Mac (no phone required)
- Build to compatible phone
A significant amount of content is provided on this website and via link to other sources. Please review these pages when initially setting up and learning to use Loop.
Some techniques are specific to Loop, but the general concepts of how man-made insulin works and strategies to test basal, carb ratios and insulin sensitivity apply to all the hybrid closed-loop systems, commercial and open source.
Loop is an open-source, shared project. The entire project has been, and continues to be, done by volunteers. From the code to the website, you're getting all this because dozens of volunteers have given their time, so please add your time by reading this website thoroughly before embarking on your Loop journey.
Here are development history links to other resources for you to explore.
The early history of Loop development:
- History of Loop and LoopKit, written by Loop developer Nate Racklyeft
The early days and the many advances brought about by the
#We Are Not Waitingdiabetes community:
How the Omnipod Eros pods were cracked to work with Loop:
- Insulin Pumps, Decapped Chips and Software Defined Radios written by Loop developer Pete Schwamb
- Deep Dip Teardown of Tubeless Insulin Pump by Sergei Skorobogatov