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Streaming data from Garmin Edge to external device

9240454
7 days ago

I'm working on a project where I stream live video from my bike to a remote server, and I’d like to overlay real-time telemetry (speed, heart rate, cadence, etc.) from my Garmin Edge device onto the video stream.

I know that the Companion API is not supported on Edge devices, so I'm trying to figure out if there’s any other way to transmit data from an Edge to an external server during a ride.

Specifically:

  1. Can a Connect IQ app access live sensor data (HR, speed, power, etc.) reliably during an activity?

  2. Is there any workaround to forward that data in real time — maybe through Bluetooth, ANT+, or a paired phone — even without Companion API support?

  3. Has anyone successfully streamed or mirrored Edge activity data to another system while the ride is ongoing?

I’m open to technical solutions — whether it's writing a CIQ app, using a wearable as a bridge, or working directly with sensors via BLE on a separate device.

Thanks for any help or ideas!

  • 3 days ago

    1. yes

    2. indeed, ANT or BT

  • 3 days ago

    1. yes, but it would specifically have to be a Connect IQ data field (which is one of several CIQ app types), as opposed to a standalone app (which is referred to as a "device app" / "watchApp".) This is assuming that you want the app work within the context of the built-in cycling activity, as opposed to writing a fully standalone device app which would have to reinvent the wheel for many of the built-in features cyclists are accustomed to.

    2. Starting with CIQ 5.0.0, a data field can access network communications (web requests) in the foreground, which means that it could constantly contact an HTTPS server on the internet or on your paired phone. The framework would automatically use BLE to communicate with the phone, and the Garmin Connect app would serve as a bridge to the internet.

    For devices with CIQ < 5.0.0, a data field can only access network communications in the background, which means it would only be able to send or receive data once every 5 minutes

    You can see which Edge devices support CIQ 5.0.0 or higher on this page:

    [https://developer.garmin.com/connect-iq/compatible-devices/]

    For devices without CIQ 5.0.0 support, ANT/BT may be an option as flocsy said