recorder

Record a Concept2 PM5 ergometer session and export it either as a Concept2 Logbook CSV (playable back in pm5-base's example app) or as a JSON dump of every raw event the monitor sent, for higher-fidelity playback.

No build step, no package manager, no framework — plain HTML/CSS/JS.

Running it

Serve the repo root with any static file server and open index.html in Chrome or Edge (BLE/HID both need Chromium; Mock works in any browser):

python3 -m http.server 8000

Then visit http://localhost:8000/, pick a transport, and click Connect. Recording starts automatically. Click Export CSV (Concept2 Logbook) any time after the first sample (once a second) to download the reduced-field CSV, or Export Events (JSON) to download every raw message the monitor sent, timestamped, for full-fidelity playback.

Picking Mock reveals a file picker: choose a previously exported .csv (Concept2 Logbook format) or .json (ours) to replay that session instead of the shipped demo workout — handy for testing playback of your own recordings.

Click the "i" button next to the title for the same info in-app.

Getting the code

This repo pulls in pm5-base as a git submodule, so clone with:

git clone --recurse-submodules https://github.com/ergarcade/recorder.git

If you already cloned without that flag:

git submodule update --init

Updating the pm5-base submodule

git submodule update --remote pm5-base
git add pm5-base
git commit -m "Update pm5-base submodule"

Tests

slots.js's event-merge logic, csv.js's serialization (including a round-trip through pm5-base's own CSV parser), and events.js's raw-event capture (driven against a real PM5Mock) have node tests, no browser required:

node --test