Activity Monitor

This method offers a gentler approach to adjusting sensitivity compared to the exercise mode. It proves effective in scenarios such as vacuum cleaning, a short walk to the cinema, or a brief bicycle ride for shopping. The foundational data is derived from the phone's acceleration sensor and its built-in step counter.

A new switch in the OpenAPS SMB menu facilitates the activation of the activity monitor, which remains inactive by default. The counted steps can be reviewed in the SMB tab at the end of the profile section. These steps are assessed across various time segments during the last hour, leading to five classifications. The resulting sensitivity change factors for different scale factors are displayed in columns to the right. These scale factors, adjustable in preferences, allow users to tailor the impact according to personal preferences.

In the SMB-tab debug section's outset, the activity monitor provides the current status and assessment of the activity level. Beyond sensitivity adjustments, the basal rate also undergoes adaptation. An unexpected yet welcome outcome of the one-hour time window holding step counts is the gradual reduction post-activity, diminishing from 30% to 15%, eventually reaching 0% impact. This process also extends to the conclusion of the exercise mode, as the activity monitor seamlessly takes over after the exercise TT ends.

The activity monitor faces restrictions or deactivation in specific situations:

• No inactivity detection during the first hour of (re-)starting AAPS
• Deactivated in settings
• A TT is active
• The phone was not carried during the last 15 minutes
• This raises the question of handling sleeping hours. With the phone at rest, how can one prevent entering inactivity mode if sleep is interrupted for a quick check or a bathroom visit?

Option 1: Leave the phone next to the bed untouched, trusting the loop or checking status on the watch.

Option 2: Enable and define a personal window for sleeping hours to disable inactivity detection. Upon rising for the day, one will commence in inactivity mode—a favorable state for combating resistance during the dawn phenomenon.