Garmin Watches¶

Strimma can send glucose data to Garmin watches in two ways: via xDrip-compatible broadcasts (through GlucoDataHandler) or via the built-in local web server.

Option 1: Local Web Server (Direct)¶

The simplest path — Strimma serves glucose data over HTTP, and the Garmin watchface reads it directly from the phone.

graph LR
    A[CGM App] -->|Notification| B[Strimma]
    B -->|HTTP :17580| C[Garmin Watch]

Setup¶

1. In Strimma: Settings > Sharing > Local Web Server — toggle on
2. On your Garmin watch: install a watchface that reads from http://127.0.0.1:17580/sgv.json (e.g., SugarWave)
3. Done — the watchface polls for glucose data over the phone's local connection

This works because the Garmin watch communicates with the phone app over Bluetooth, which can relay HTTP requests to localhost.

Compatible Watchfaces¶

• SugarWave — retrowave-styled watchface with glucose graph, trend, delta, and configurable thresholds. Works with Strimma's local web server, xDrip's local server, or Nightscout.
• Any watchface that reads from xDrip's web service endpoint (/sgv.json on port 17580)

Option 2: xDrip Broadcast via GlucoDataHandler¶

The traditional DIY community path — Strimma broadcasts glucose, GlucoDataHandler relays it to the watch.

graph LR
    A[CGM App] -->|Notification| B[Strimma]
    B -->|BG Broadcast| C[GlucoDataHandler]
    C -->|Garmin SDK| D[Garmin Watch]

Setup¶

1. In Strimma: Settings > Sharing > BG Broadcast — toggle on
2. Install GlucoDataHandler on your phone
3. In GDH: enable xDrip+ broadcast as a data source, configure your Garmin watch as a target
4. Install a compatible Garmin watchface or datafield (e.g., SugarField, AAPS Widget)

Compatible Apps¶

• SugarField — workout datafield showing live BG value, trend arrow, delta, and staleness
• SugarGraph — workout datafield showing a BG history graph with configurable duration
• AAPS Widget — CGM watchface that works with GDH
• Any Garmin app that receives data from GlucoDataHandler

Which Option to Choose?¶

Troubleshooting¶