This project provides a simple 'worm' navigation feature for selected Garmin wearables. It consists of two apps:

• An Android companion app to manage GPX tracks and routes and send them to the Garmin device via Bluetooth
• The ConnectIQ app for the Garmin device to navigate along the track and to run activities

Installation and User Guide

• Download the sources and build binaries using Android Studio and Visual Studio Code with Monkey C extension
• Install Garmin's Connect app on Android device (prerequisite for transmission of tracks via Bluetooth)
• Deploy the built apps to the Android and Garmin devices
• Import tracks and routes with the Android companion app
• Couple Android and Garmin devices via Bluetooth
• Send selected track or route to Garmin device
• Optionally reduce number of track/route points
• Open WormNav app on Garmin device
• Change settings as needed

For a complete user guide visit https://andan67.github.io/wormnav/

Features

• Manage tracks and routes with companion app
• Autonomous navigation with the Garmin device (i.e. no smartphone needed)
• Map zoom in/out and center
• Auto lap by configurable distance
• Show activity data on configurable data screens
• Optionally show elevation profile
• Breadcrumb tracking by configurable distance or manual setting

Limitations and knwon issues

• The ConnectIQ app code is optimized for speed and low memory and battery consumption in order to work properly for Garmin Forerunner 23x
• Number of track points on Forerunner 23x is limited to ~450 (without elevation data) and ~300 (with elevation data)