localgenai/opencode

Garmin Data Fetcher

A Python script to download per-second activity data (heart rate, GPS, cadence, etc.) from Garmin Connect and extract it from FIT files for analysis.

Setup

1. Create virtual environment:

python -m venv venv
source venv/bin/activate

2. Install dependencies:

pip install garminconnect garmin_fit_sdk

3. Set environment variables:

export GARMIN_EMAIL=your_email@example.com
export GARMIN_PASSWORD=your_password

Usage

Run the script to download and extract data:

python scripts/fetch_garmin_data.py

The script will:

• Authenticate with Garmin Connect
• Download the most recent activity's FIT file
• Extract per-second record data (heart rate, GPS, cadence, etc.)
• Save the data as JSON for analysis

Output

Data is saved in garmin_data/ as:

• {activity_id}.fit - Original FIT file
• {activity_id}_data.json - Extracted per-second records