The Freestyle Libre 2 sensor is now a real CGM even with the official app. Still, LibreLink cannot send data to AAPS. There are several solutions to use it with AAPS.
Bluetooth transmitters can be used with the Libre 2 (EU) or 2+ (EU) and an out of process algorithm app. You can receive blood sugar readings every 5 minutes like with the Libre 1.
Check the bridge and app you want to use are compatible with your sensor and xDrip+.
The Libre2 OOP (find it here) is creating the same BG readings as with the original reader. AAPS with Libre 2 do a 10 to 25 minutes smoothing to avoid certain jumps. See below Value smoothing & raw values. OOP generates readings every 5 minutes with the average of the last 5 minutes. Therefore the BG readings are not that smooth but match the original reader device and faster follow the "real" BG readings. If you try to loop with OOP please enable all smoothing settings in xDrip+.
There are some good reasons to use a Bluetooth transmitter:
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You can choose various OOP2 calibration strategies (1): have the reader values using "no calibration", or calibrate the sensor like a Libre 1 using "calibrate based on raw" or ultimately calibrate the the readers like values with "calibrate based on glucose".
Make sure to leave OOP1 disabled (2).→ Hamburger Menu → Settings → Less common settings → Other misc. options
- The Libre 2 sensor can be used 14.5 days as the Libre 1
- 8 hours backfilling is fully supported
Remark: The transmitter can be used in parallel to the LibreLink app without interfering with it.
- → Hamburger Menu (1) → Start sensor (2) → Start sensor (3) → Answer "Not Today" (4).
This will not physically start any Libre2 sensor or interact with them in any case. Il s'agit simplement d'indiquer à xDrip+ qu'un nouveau capteur envoie des glycémies. Si possible, entrez deux valeurs de glycémie capillaire pour l'étalonnage initial. Maintenant, les glycémies doivent être affichées dans xDrip+ toutes les 5 minutes. Les valeur manquées, par ex. si vous étiez trop loin de votre téléphone, ne seront pas actualisées à postériori.
Après un changement de capteur, xDrip+ détectera automatiquement le nouveau capteur et supprimera toutes les données d'étalonnage. You may check you blood glucose after activation and make a new initial calibration.
- In AAPS go to Config Builder > BG Source and check 'xDrip+'
- If AAPS does not receive BG values when phone is in airplane mode, use 'Identify receiver' as describe on xDrip+ settings page.
:class: warning
xDrip+ doesn't support direct connection to Libre 2 US and AUS.
Only Libre 2 and 2+ **EU** models.
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Follow these instructions to setup xDrip+ as the original documentation links to an obsolete OOP2 version.
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Follow setup instructions on xDrip+ settings page.
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Select xDrip+ in in ConfigBuilder, BG Source.
(libre2-value-smoothing-raw-values)=
Technically, the current blood sugar value is transmitted to xDrip+ every minute. A weighted average filter calculates a smoothed value over the last 25 minutes by default. You can change the period in the NFC Scan features menu.
→ Hamburger menu → Settings → NFC Scan features → Smooth libre 3 data when using xxx method
Ceci est obligatoire pour la boucle. The curves look smooth and the loop results are great. Les valeurs brutes sur lesquelles les alarmes sont basées sont un peu plus instables, mais correspondent également aux valeurs que le lecteur affiche. De plus, les valeurs brutes peuvent être affichées dans le graphique xDrip+ afin de pouvoir réagir à temps en cas de changements rapides. Veuillez activer Paramètres moins courants > Paramètres Avancés pour Libre2 > "show Raw values in Graph" et "show Sensors Infos in Status". Ainsi les valeurs brutes sont affichées sous forme de petits points blancs et des informations supplémentaires sur les capteurs sont disponibles dans le menu Système.
Les valeurs brutes sont très utiles lorsque les glycémies changent rapidement. Même si les points sont moins stables, vous détecterez beaucoup mieux la tendance qu'avec l'utilisation de la ligne lissée pour prendre les bonnes décisions de traitement.
→ Hamburger menu → Settings → Less common settings → Advanced settings for Libre 2
You can calibrate the Libre2 with an offset of -40 mg/dl to +20 mg/dL [-2,2 mmol/l to +1,1 mmol/l] (intercept). The slope isn't changeable. Please check by fingerpricking after setting a new sensor, keeping in mind it might not be accurate in the first 12 hours after insertion. Since there can be large differences to the blood measurements, verify every 24 hours and calibrate if necessary. If the sensor is completely off after a few days, it should then be replaced.
- Install Diabox. In Settings, Integration, enable Share data with other apps.
- Select xDrip+ in in ConfigBuilder, BG Source.
See here.