A web-based MIDI editor for the Chase Bliss Lost + Found dual-engine effects pedal. Control every parameter, manage presets, and explore the full sonic palette of this powerful ambient machine—all from your browser.
- Full MIDI Control — Adjust all 12 knobs, effect selections, routing, and DIP switches via Web MIDI
- Visual Knob Interface — Drag-to-adjust knobs with real-time value display and smooth rotation
- Dynamic Labels — Dynamic labels show different sub-titles for knobs depending on the selected effect!
- Preset Management — Store, recall, rename, and organize up to 122 presets
- Cloud Sync — Optional Google sign-in to backup your preset library across devices
- Randomizer — Generate fresh patches instantly (all parameters, knobs only, or per-column)
- Lock System — Lock specific knobs to preserve values during randomization or preset recall
- Ramping Control — Configure which knobs sweep automatically via the pedal's ramping engine
- Tap Tempo — Send tap tempo messages synced to the pedal's clock
- Export/Import — Save individual presets or your entire library as JSON files
- Alt-Key Tooltips — Hold
Alt/Optionto see detailed descriptions of every control - Responsive Design — Works on desktop, tablet, and mobile
- Session Persistence — All settings automatically saved to browser storage between sessions
- A modern browser with Web MIDI API support (Chrome, Edge, Opera)
- A MIDI interface connected to your Chase Bliss Lost + Found pedal
- Node.js 18+ (for local development)
# Clone the repository
git clone https://github.com/your-username/lost-found-midi-editor.git
cd lost-found-midi-editor
# Install dependencies
npm install
# Start the development server
npm run devOpen http://localhost:5173 in your browser.
npm run build
npm run previewThe built files will be in the dist/ folder, ready to deploy to any static hosting service.
- Click Enable MIDI in the top toolbar
- Grant MIDI permissions when prompted
- Select your MIDI output device from the dropdown
- Choose the MIDI channel (1-16) that matches your pedal's setting
Once connected, all knob changes are sent to the pedal in real-time.
The main interface mirrors the Lost + Found's physical layout:
| Left Column | Center Column | Right Column |
|---|---|---|
| L Time | Mix | R Time |
| L Modify | Blend | R Modify |
| L Alt | Spill | R Alt |
| L EQ | Glue | R EQ |
Knob Interaction:
- Drag vertically to adjust values (up = increase, down = decrease)
- Double-click to reset to default value
- Shift + drag for fine adjustment
- The percentage value displays above each knob
Below the knob grid, select effects for each channel:
| Left FX | Routing | Right FX |
|---|---|---|
| Reverb / Pitch / Warp | L>R / L+R / L<R | Delay / Synth / Bend |
- Swap toggle reveals the alternate effect bank (Delay/Synth/Bend ↔ Reverb/Pitch/Warp)
- Engage toggles whether that effect channel is active
- Footswitch buttons simulate the physical footswitches (short press = engage, long press = hold mode)
- The LED indicates active/hold status
The L Modify and R Modify knobs blend between two variants of each effect:
- A variant (fully counter-clockwise)
- B variant (fully clockwise)
The colored arc shows the current blend position, with labels identifying which specific effect variations are at each end.
Click the lock icon (🔓/🔒) next to a parameter to lock it:
- Locked knobs are preserved during randomization
- Useful for keeping your Mix, EQ, or other settings consistent during random patches
The Unlock All button (🔓) in the Random section clears all locks.
| Button | Action |
|---|---|
| ALL | Randomizes effects, routing, and all knobs |
| KNOBS | Randomizes only knob values |
| 🎲 (per-column) | Randomizes just that column's effect + knobs |
Check +Ramp to include ramping parameters in the randomization.
Quick Actions (Top Bar):
- Slot dropdown — Select preset slot (0-122, where 0 = Live buffer)
- Recall — Load the selected preset from the pedal
- Store — Save current settings to the selected slot
Cloud-Based Preset Manager (Manage button):
- View all 122 slots with names and status
- Mark slots as "Used" to help track which are occupied
- Rename presets inline
- Export/Import individual presets as JSON
- Swap two preset slots on the pedal (useful for reordering)
- Note: Swapping uses slot 122 as a temporary buffer. Any preset stored in slot 122 will be overwritten during a swap operation.
⚠️ Important: One-Way Communication The interface cannot read current knob positions from the pedal.
- Only values edited within the web interface are stored in the library/cloud.
- If you tweak knobs physically on the pedal and then save, those physical changes will not be reflected in the saved preset.
- Always adjust parameters in the editor if you intend to save them to your library.
Optional Google sign-in enables cloud backup:
- Click the ☁️ icon in the top bar
- Sign in with Google
- Enable Auto-Sync to automatically backup changes
Manual options:
- Upload to Cloud — Overwrite cloud backup with local data
- Download from Cloud — Restore from cloud backup
Cloud sync stores preset names and metadata only, not knob values (those live on the pedal).
The Lost + Found's ramping system allows knobs to sweep automatically:
- Expand the Ramping Control section
- Toggle Enabled to activate ramping globally
- Click the RAMP pill beneath any knob to include it in the sweep
- Adjust Ramp Speed to control how fast knobs sweep
- Bounce — Oscillate back and forth vs. resetting to start
- Sweep — Invert the sweep direction
- MISO — Mono In Stereo Out
- Spread DIP — Enables the Spread control
- Spread — Which effects to use stereo spread with
- Tap button — Send tap tempo to the pedal
- MIDI Clock Follow — Sync to incoming MIDI clock
- Unsync — Let L and R time parameters run independently
- L/R Tap Subdivision — Set note divisions when synced
| Setting | Description |
|---|---|
| Latch | Tap to toggle effect (vs. hold-to-engage) |
| Trails | Effects trail off naturally when bypassed |
| Bank | Enable preset bank mode for MIDI program changes |
| Polarity | Invert expression pedal polarity |
| Key | Action |
|---|---|
Alt / Option (hold) |
Show tooltips for all controls |
src/
├── main.ts # App entry point & UI orchestration
├── components/ # UI components (Knob, TriBlock, Controls)
├── services/ # Business logic (MIDI, State, Presets, Cloud)
├── config/ # JSON configs (knobs, effects, tooltips)
├── styles/ # CSS styling
├── types/ # TypeScript type definitions
└── utils/ # Helper functions
- Uses the Web MIDI API
- Sends CC messages for knob values (0-127)
- Sends Program Change messages for preset recall
- Supports MIDI SysEx for preset store operations
| Browser | Support |
|---|---|
| Chrome | Full |
| Edge | Full |
| Opera | Full |
| Firefox | Partial (requires Web MIDI extension) |
| Safari | Not supported (no Web MIDI API) |
Contributions are welcome! Please:
- Fork the repository
- Create a feature branch (
git checkout -b feature/amazing-feature) - Commit your changes (
git commit -m 'Add amazing feature') - Push to the branch (
git push origin feature/amazing-feature) - Open a Pull Request
- Chase Bliss Audio for creating the Lost + Found pedal
- Inspired by PedalPylot. Please consider donating to support Phil G Music.
- Support the developer of this web editor on Patreon
- Built with Vite and TypeScript
- Cloud sync powered by Firebase
This project is licensed under the MIT License - see the LICENSE file for details.
Not affiliated with Chase Bliss Audio. This is an independent community project.