Data Broadcaster

The DFC Data Broadcaster is a Bluetooth LE device that allows Peloton bikes to connect to fitness watches, bike head units, and apps. In real-time it reads data on a cable from your indoor bike and broadcasts power and cadence data wirelessly to other platforms like Zwift and Garmin. This allows the simultaneous use of services from other platforms in addition the service offerings of the bike.

Use Cases

Want to chase the leaderboard on Peloton while grinding up Alpe du Zwift or following a power-based training plan on your watch? That's just a few of the scenarios that DFC enables.

Cycling Apps (e.g. Zwift, TrainerRoad)

DFC enables using a Peloton bike to ride and race in the virtual worlds of Zwift or RGT Cycling or follow a training plan with TrainerRoad, The Sufferfest, or Rouvy. It's been tested with over 100 hours of riding on Zwift.

Wearables and cycling computers (e.g. Garmin, Wahoo, Polar)

Follow a training plan or track your progress with Garmin Connect or another ecosystem? DFC makes it easy to use advanced analytics like Firstbeat on your Garmin and track all of your data in one place. I use a training plan from FasCat that syncs automatically to my watch through Training Peaks. It's great to just hop on the bike, load my training for the day, and get on with my workout. Afterwards all of the data is sync'd and my recovery metrics are accurate.

How it Works

Your bike has a data cable which plugs into the back of the tablet (see the block diagram). This device simply splits off of that cable, reads the data stream, and broadcasts it wirelessly. Power it up and you'll see it advertised as either a Bluetooth power meter (for connection to wearables and cycling computers) or a fitness machine with power and cadence (for connection to apps). From there it works like other Bluetooth fitness devices. Your indoor bike continues to function as usual and you get a real-time stream of your data to use where you want.


I developed prototypes of DFC because I found it useful for my training. I'm now seeking feedback to gauge interest in it so please subscribe to updates below or leave a comment on the video to let me know if there's enough interest to develop it further.


What does DFC stand for?

The name DFC stands for data fitness connector or damn fine coffee — you decide.