Continuous Glucose Monitor Data Widget (CGM sideload)

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Henry Aspden

• December 15, 2022 21:22

Any Hammerhead Karoo users living, riding, racing and thriving with diabetes... We now have a Nightscout CGM Blood Glucose data field !!! This field allows you to feed data directly to a data widget / data field within the ride app. This is an experimental app and has some prerequisites however works brilliantly. A massive thanks to valterc for his help on this one too !!! Instructions are available at https://github.com/haspden/INFLITE-TYPE-ONE-Hammerhead-CGM Download the latest release at https://github.com/haspden/INFLITE-TYPE-ONE-Hammerhead-CGM/releases Please feel free to post feedback and suggestions Thanks Henry

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  Gavin Jones

  • January 11, 2023 07:02
  • Edited

  Great work on getting this done.
  Does anyone have any data on what this does to battery life on the device?

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  Henry Aspden

  • January 11, 2023 07:56

  I haven't noticed any significant battery usage Gavin but would welcome somebody doing a pre and post installation test... It's so hard to complete the same ride at the same time of day with the same bike and same exact starting % to get accurate comparisons.

  The app itself is very very small in terms of what it does, simply downloads a small file every X seconds and then uses the Hammerhead Karoo SDK to feed and display that as a data field (which is already running anyway)

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  Leon M.

  • June 20, 2024 18:39

  Hey, i'm not sure if i made a mistake but the APP isn't working at my karoo (3rd generation)
  Will there be an update for the new karoo or should it work and I need to try it again?

  And especially, thanks a lot for your work

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  Kimberly

  • February 24, 2025 04:43

  Nightscout does not work with Libre 3 and android. They are working on it, but as of now it does not. Just an FYI

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  peterleimbach

  • April 05, 2025 10:52

  Nightscout integration with Libre 3 is described here https://nightscout.github.io/uploader/uploaders/#libre-2-3.

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  Robert van Halm

  • May 04, 2025 20:20

  I've installed the apk and did the setting (APK Secret included) to Nightscout but the datafields aren't visible. I'm using the Karoo 3. Am I missing something perhaps?

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  Henry Aspden

  • May 07, 2025 17:29

  The K3 isn’t yet supported unfortunately since it’s update to the new Karoo SDK Extensions.

  We’re working on a solution and hope to have one in the next few weeks.

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  peterleimbach

  • July 20, 2025 07:47

  That would be great Henry. If you need help for testing please contact me. I use iAPS DIY loop with Nightscout server.

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  Alex Pawlowski

  • July 30, 2025 20:50
  • Edited

  If somebody is using Libre sensors, I vibe coded a simple jetpack app: https://github.com/pawlowskialex/karoocgm. You need to have a LibreLinkUp account, like you do with other 3rd party Libre apps.

  Don't set it up on Wi-Fi, set it up on phone connection.

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  Maxime Verac

  • February 23, 2026 13:19

  Hello Alex,

  That looks awesome. Do you have a way to directly provide the APK?

  Otherwise I will have also to use AI to understand what I need to install, how to obtain the source code and then how to compile it (last time I did some dev work was more than 10 years ago so I'm a bit rusty...)

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