PolarH10Windows-first telemetry toolkit
PolarH10 Developer Reference

FAQ

This page covers the high-friction questions that come up after a first scan, first build, or first saved session.

Do I Need The Official Polar SDK?

No. This repo talks to the Polar H10 directly over standard BLE/GATT on Windows.

Is This Project Official?

No. It is an unofficial open-source implementation and is not endorsed by or affiliated with Polar Electro Oy.

What Runs On Windows Right Now?

The repo currently targets a Windows-first workflow:

  • PolarH10.App for the WPF operator surface
  • PolarH10.Cli for direct command-line use
  • PolarH10.Transport.Windows for the WinRT BLE transport

Which Signals Can I Inspect Or Record?

  • Heart rate and RR intervals
  • ECG
  • Accelerometer data
  • RR-derived coherence and coherence confidence in the WPF app
  • Breath interval entropy and breath amplitude entropy in the WPF app once breathing dynamics is warm
  • Protocol transcript output for control-point and notification debugging

Can I Compare More Than One Strap At Once?

Yes. The WPF app supports parallel multi-strap telemetry tracking on the Live surface while keeping one selected control target for connect, record, and diagnostics actions.

Why Do Coherence Or Entropy Values Start At --?

Because both derived modules have a warmup phase:

  • coherence needs enough accepted RR coverage to build a stable resonance window
  • breathing dynamics needs successful breathing calibration plus enough accepted breaths for entropy metrics

That is expected behavior, not an automatic failure.

Why Can Coherence Or HRV Exist Even Before I Inspect ECG In Detail?

Because both modules solve from accepted RR intervals rather than directly from ECG morphology.

  • on a physical H10, those RR intervals are device-derived from the strap's ECG beat timing
  • on the sibling SyntheticBio harness, the RR stream is now paired with synthetic PMD ECG on the same beat schedule, but the coherence and HRV solves themselves still use RR

What Should I Read First If I Only Want One Working Session?

Start with:

  1. Getting Started on Windows
  2. First Recording
  3. Troubleshooting if the first attempt is not clean

Where Do I Learn The Wire Format?

Use the protocol docs: