diff --git a/content/notes/11-orientation sensors-2.md b/content/notes/11-orientation sensors-2.md
index e659e869d..ec251a84e 100644
--- a/content/notes/11-orientation sensors-2.md	
+++ b/content/notes/11-orientation sensors-2.md	
@@ -81,3 +81,8 @@ Dead Reckoning
 - Orientation is biggest issues 
 - Periodic recalibration with new reference point required
 ![](https://i.imgur.com/ZKd8Z4t.png)
+
+![](https://i.imgur.com/7h9nO5Z.png)
+![](https://i.imgur.com/xNrcbm7.png)
+
+> [!INFO] detect when you take a lift as a calibration point
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