About SmartSpin2k
Turn your spin bike into a smart trainer.
SmartSpin2k is a small open-source device that mounts on your spin bike and turns the resistance knob for you. Zwift, Rouvy, TrainerRoad, and other training apps see it as a smart trainer. Your bike gets harder on the climbs, eases off on the descents, and holds your target power in ERG workouts.
It fits almost any spin bike with a resistance knob, for a fraction of the cost of a new smart bike.
What it does
Your bike reacts to virtual hills and descents in apps like Zwift. No more reaching for the knob.
Structured workouts hold your exact target power. Pedal faster or slower, and SmartSpin2k turns the knob to keep you on target.
The included shifter changes gears like an outdoor bike, one-handed. Pick your cadence on every climb.
Connects over Bluetooth like any smart trainer, so you aren't locked into one app. Apps that support it can also connect over WiFi.
SmartSpin2k passes your power, cadence, and heart rate to your app as one device. That helps on Apple TV, which allows only a few Bluetooth connections.
Bowflex, Echelon, Peloton, Schwinn, Yesoul, and many more. See Compatibility.
How it works
- Your bike or power meter sends power and cadence to SmartSpin2k. Most bikes send them over Bluetooth. The original Peloton Bike sends them through its sensor cable.
- SmartSpin2k passes them to your training app. The app sees a smart trainer, the same as it would with any other.
- The app controls the resistance. When the road tilts up, or a workout asks for more watts, the app tells SmartSpin2k, and its motor turns the knob to match.
What you need
- A spin bike with a resistance knob. Check Compatibility.
- Power and cadence. Many bikes send them over Bluetooth already, such as the Bowflex C6, Schwinn IC4, and Yesoul S3. If yours doesn’t, add power meter pedals. The original Peloton Bike plugs in with a cable, and the Peloton Bike+ uses Grupetto or a power meter.
- A training app. Zwift, MyWhoosh, TrainerRoad, Rouvy, TrainingPeaks Virtual, Kinomap, and others. You can also ride ERG workouts in the Companion App.
See it in action
The SmartSpin2k Companion App
Set up and ride from your phone or computer. Guided Setup walks you through installation step by step. After setup, use the app to:
- shift gears and watch live power and cadence
- ride ERG workouts from intervals.icu, with intervals.icu and Strava sync
- tune your settings and explore your Power Table
- install firmware updates
The story
SmartSpin2k started on the road. Founder Anthony Doud is a professional pilot, avid cyclist, and maker, and he rode a lot of hotel spin bikes. He packed power meter pedals so he could ride Zwift away from home, but without automatic resistance, the hills didn’t feel like hills.
One day he looked down at the bike’s resistance knob. With power meter pedals attached, a \$300 spin bike already had almost everything a \$3,000 smart bike has. It was missing one thing: something to turn the knob. SmartSpin2k turns it.
Open source
SmartSpin2k is open source. The firmware, circuit board, and 3D-printable parts are all on GitHub, and riders in the community test it, fix it, and design adapters for new bikes.
The core team is Anthony Doud (founder), Emad Ghazipura (user experience and kits), and Nick Bayma (beta testing and documentation). Join the SmartSpin2k Facebook group to ask questions and share your setup.