Initial commit.

.babelrc

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+{
+  "presets": [["@babel/preset-env",
+    {
+      "targets": {"node": 10},
+      "include": ["transform-parameters"]
+    }
+  ]]
+}

.eslintrc.js

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+module.exports = {
+    "env": {
+        "es6": true,
+        "node": true
+    },
+    "extends": "eslint:recommended",
+    "globals": {
+        "Atomics": "readonly",
+        "SharedArrayBuffer": "readonly"
+    },
+    "parserOptions": {
+        "ecmaVersion": 2018,
+        "sourceType": "module"
+    },
+    "rules": {
+    }
+};

.gitignore

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+lib/*
+node_modules
+
+*.sw*
+*~

README.md

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+# Gymnasticon
+
+<p align="center">
+<img src="docs/gymnasticon.jpg">
+</center>
+
+Gymnasticon enables the obsolete Flywheel Home Bike to work with Zwift and other training apps. Support for other bikes can be added easily.
+
+![Diagram](docs/diagram.png)
+
+## Bikes tested
+
+* Flywheel (tested)
+* LifeFitness IC5 (probably works)
+
+## Apps tested
+
+* Zwift
+* TrainerRoad (only briefly)
+* Rouvy (only briefly)
+
+## Quick Start: Install from npm
+
+> Note: Your user must have permission to access the Bluetooth adapter.
+> Note: The only supported platform is Linux but it may work elsewhere.
+> Note: A Bluetooth 4.1+ adapter with simultaneous Central and Peripheral roles is required.
+
+    npm install -g gymnasticon
+    gymnasticon
+
+See `deploy/gymnasticon.service` for an example of how to automatically start on boot.
+
+## CLI options
+
+```text
+$ gymnasticon --help
+```
+
+```text
+   __o
+ _ \<_
+(_)/(_)
+
+Gymnasticon
+v1.0.0
+
+usage: gymnasticon [OPTIONS]
+
+Options:
+  --config                <filename> load options from json file        [string]
+  --bike                  <type>
+                     [string] [choices: "flywheel", "bot"] [default: "flywheel"]
+  --bike-connect-timeout  <seconds>                        [number] [default: 0]
+  --bike-receive-timeout  <seconds>                        [number] [default: 4]
+  --bike-adapter          <name> for bike connection           [default: "hci0"]
+  --flywheel-address      <macaddr>
+  --flywheel-name         <name>
+  --bot-power             <watts> initial bot power                     [number]
+  --bot-cadence           <rpm> initial bot cadence                     [number]
+  --bot-host              <host> for power/cadence control over udp     [string]
+  --bot-port              <port> for power/cadence control over udp     [number]
+  --server-adapter        <name> for app connection            [default: "hci0"]
+  --server-name           <name> used for Bluetooth advertisement
+                                                        [default: "Gymnasticon"]
+  --server-ping-interval  <seconds> ping app when user not pedaling
+                                                           [number] [default: 1]
+  --version               Show version number                          [boolean]
+  -h, --help              Show help                                    [boolean]
+  ```
+
+## Contributing
+
+    git clone https://github.com/ptx2/gymnasticon.git
+    cd gymnasticon
+    npm link
+
+## HOWTO: Add support for a bike
+
+It should be trivial to add support for other proprietary bikes, so long as
+there is a means of getting realtime-ish cadence/power data from them.
+
+1. Implement a bikeclient in src/bikes
+2. Add cli options to src/app/cli-options
+3. Add function to instantiate the bikeclient with the cli options to src/bikes/index.js
+
+## License
+
+MIT
+
+## More info
+
+Read the development notes [here](https://ptx2.net/posts/unbricking-a-bike-with-a-raspberry-pi).

deploy/gymnasticon.service

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+[Unit]
+Description=Gymnasticon
+After=bluetooth.target
+Requires=bluetooth.target
+
+[Service]
+Type=simple
+Environment=
+WorkingDirectory=/home/pi
+User=pi
+Group=pi
+ExecStart=/usr/local/bin/gymnasticon
+RestartSec=1
+Restart=on-failure
+
+[Install]
+WantedBy=multi-user.target
+