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Author SHA1 Message Date
Martino Russi dfb47b91a5 Merge branch 'main' into mrussi/glove_visualizer 2026-07-05 17:35:05 +02:00
Steven Palma 7957d4e2dc chore(docs): update readme + gr00t libero results (#3941)
* chore(docs): update readme + gr00t libero results

* chore(docs): update template and in-tree policy steps
2026-07-05 15:11:46 +02:00
pre-commit-ci[bot] 4c17a7be2b [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
2025-09-01 09:48:07 +00:00
nepyope c8c37bd339 added visualizer 2025-09-01 11:47:45 +02:00
pre-commit-ci[bot] 0ccc08e347 [pre-commit.ci] auto fixes from pre-commit.com hooks
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2025-08-12 12:16:07 +00:00
nepyope 7b207d44a0 added glove visualizer 2025-08-12 14:12:13 +02:00
9 changed files with 1740 additions and 18 deletions
+8 -8
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@@ -87,7 +87,7 @@ Learn more about it in the [LeRobotDataset Documentation](https://huggingface.co
## SoTA Models
LeRobot implements state-of-the-art policies in pure PyTorch, covering Imitation Learning, Reinforcement Learning, and Vision-Language-Action (VLA) models, with more coming soon. It also provides you with the tools to instrument and inspect your training process.
LeRobot implements state-of-the-art policies in pure PyTorch, covering Imitation Learning, Reinforcement Learning, Vision-Language-Action (VLA) models, World Models, and Reward Models, with more coming soon. It also provides you with the tools to instrument and inspect your training process.
<p align="center">
<img alt="Gr00t Architecture" src="./media/readme/VLA_architecture.jpg" width="640px">
@@ -101,13 +101,13 @@ lerobot-train \
--dataset.repo_id=lerobot/aloha_mobile_cabinet
```
| Category | Models |
| -------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Imitation Learning** | [ACT](./docs/source/policy_act_README.md), [Diffusion](./docs/source/policy_diffusion_README.md), [VQ-BeT](./docs/source/policy_vqbet_README.md), [Multitask DiT Policy](./docs/source/policy_multi_task_dit_README.md) |
| **Reinforcement Learning** | [HIL-SERL](./docs/source/hilserl.mdx), [TDMPC](./docs/source/policy_tdmpc_README.md) & QC-FQL (coming soon) |
| **VLAs Models** | [Pi0](./docs/source/pi0.mdx), [Pi0Fast](./docs/source/pi0fast.mdx), [Pi0.5](./docs/source/pi05.mdx), [GR00T N1.7](./docs/source/policy_groot_README.md), [SmolVLA](./docs/source/policy_smolvla_README.md), [XVLA](./docs/source/xvla.mdx), [EO-1](./docs/source/eo1.mdx), [MolmoAct2](./docs/source/molmoact2.mdx), [WALL-OSS](./docs/source/walloss.mdx) |
| **World Models** | [VLA-JEPA](./docs/source/vla_jepa.mdx) (more coming soon) |
| **Reward Models** | [SARM](./docs/source/sarm.mdx), [TOPReward](./docs/source/topreward.mdx), [Robometer](./docs/source/robometer.mdx) |
| Category | Models |
| -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Imitation Learning** | [ACT](./docs/source/policy_act_README.md), [Diffusion](./docs/source/policy_diffusion_README.md), [VQ-BeT](./docs/source/policy_vqbet_README.md), [Multitask DiT Policy](./docs/source/policy_multi_task_dit_README.md) |
| **Reinforcement Learning** | [HIL-SERL](./docs/source/hilserl.mdx), [TDMPC](./docs/source/policy_tdmpc_README.md) & QC-FQL (coming soon) |
| **VLAs Models** | [Pi0](./docs/source/pi0.mdx), [Pi0Fast](./docs/source/pi0fast.mdx), [Pi0.5](./docs/source/pi05.mdx), [GR00T N1.7](./docs/source/policy_groot_README.md), [SmolVLA](./docs/source/policy_smolvla_README.md), [XVLA](./docs/source/xvla.mdx), [EO-1](./docs/source/eo1.mdx), [MolmoAct2](./docs/source/molmoact2.mdx), [WALL-OSS](./docs/source/walloss.mdx), [EVO1](./docs/source/evo1.mdx) |
| **World Models** | [VLA-JEPA](./docs/source/vla_jepa.mdx), [LingBot-VA](./docs/source/lingbot_va.mdx), [FastWAM](./docs/source/fastwam.mdx) |
| **Reward Models** | [SARM](./docs/source/sarm.mdx), [TOPReward](./docs/source/topreward.mdx), [Robometer](./docs/source/robometer.mdx) |
Similarly to the hardware, you can easily implement your own policy & leverage LeRobot's data collection, training, and visualization tools, and share your model to the HF Hub
+4 -1
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@@ -295,11 +295,12 @@ The file names are load-bearing: the factory does lazy imports by name, and the
### Wiring
Three places need to know about your policy. All by name.
Four places need to know about your policy. All by name.
1. **`policies/__init__.py`** — re-export `MyPolicyConfig` and add it to `__all__`. **Don't** re-export the modeling class; it loads lazily through the factory (so `import lerobot` stays fast).
2. **`factory.py:get_policy_class`** — add a branch returning `MyPolicy` from a lazy import.
3. **`factory.py:make_policy_config`** and **`factory.py:make_pre_post_processors`** — same idea, two more branches.
4. **`templates/lerobot_modelcard_template.md` and the root `README.md`** — the template is what `push_model_to_hub` renders into the model card of every checkpoint trained with your policy: add a one-line description of your policy in the `model_name` branches, map it in `policy_docs` so cards link to your MDX guide, and optionally add an architecture image to `diagrams`. Then add your policy to the models table in the root `README.md`, under the right category, linking to your doc page.
Mirror an existing policy that's structurally similar to yours; the diff is small.
@@ -371,6 +372,8 @@ The general expectations are in [`CONTRIBUTING.md`](https://github.com/huggingfa
- [ ] Optional deps live behind a `[project.optional-dependencies]` extra and the `TYPE_CHECKING + require_package` guard.
- [ ] `tests/policies/` updated; backward-compat artifact committed & policy-specific tests.
- [ ] `src/lerobot/policies/<name>/README.md` symlinked into `docs/source/policy_<name>_README.md`; user-facing `docs/source/<name>.mdx` written and added to `_toctree.yml`.
- [ ] `templates/lerobot_modelcard_template.md` has a description entry and a `policy_docs` link for your policy.
- [ ] The models table in the root `README.md` lists your policy in the right category, linking to your doc page.
- [ ] At least one reproducible benchmark eval in the policy MDX with a published checkpoint (sim benchmark, or real-robot dataset + checkpoint).
The fastest way to get a clean PR is to copy the directory of the existing policy closest to yours, rename, and replace contents method by method. Don't wait until everything is polished — open a draft PR early and iterate with us; reviewers would much rather give feedback on a half-finished branch than a fully-merged one.
+7 -7
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@@ -160,13 +160,13 @@ This will follow the recipe found [here](https://github.com/NVIDIA/Isaac-GR00T/b
Preliminary LeRobot integration results (GR00T-LeRobot, `eval.n_episodes >= 50` per suite):
| Suite | Success rate |
| ---------------- | -----------: |
| LIBERO Spatial | 94% |
| LIBERO Object | 98% |
| LIBERO Goal | 93% |
| LIBERO 10 (Long) | 90% |
| **Average** | **93.75%** |
| Suite | Success rate | Checkpoint |
| ---------------- | -----------: | ------------------------------------------------------------------------------------------------------------- |
| LIBERO Spatial | 91% | [nvidia/gr00t17-lerobot-libero_spatial-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_spatial-640) |
| LIBERO Object | 81% | [nvidia/gr00t17-lerobot-libero_object-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_object-640) |
| LIBERO Goal | 97% | [nvidia/gr00t17-lerobot-libero_goal-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_goal-640) |
| LIBERO 10 (Long) | 84% | [nvidia/gr00t17-lerobot-libero_10-640](https://huggingface.co/nvidia/gr00t17-lerobot-libero_10-640) |
| **Average** | **88.25%** | |
```bash
export MODEL_ID=your_trained_model_on_huggingface
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@@ -117,6 +117,14 @@ middle_dip | 1484 | 1500 | 1547
Once calibration is complete, the system will save the calibration to `/Users/your_username/.cache/huggingface/lerobot/calibration/teleoperators/homunculus_glove/red.json`
#### Visualizing Teleoperator Glove
After calibration, you can visualize the glove movements in real-time. Open the visualizer by navigating to the visualizer directory and opening the HTML file in your browser:
```bash
open examples/hopejr/visualizer/index.html
```
### 1.3 Calibrate Robot Arm
```bash
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@@ -0,0 +1,182 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>3D Hand Joint Visualizer</title>
<style>
body {
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
overflow: hidden;
display: flex;
flex-direction: column;
height: 100vh;
}
.controls {
padding: 15px;
background-color: #f5f5f5;
z-index: 100;
}
.status {
padding: 10px;
border-radius: 5px;
margin: 10px 0;
}
.connected {
background-color: #d4edda;
color: #155724;
}
.disconnected {
background-color: #f8d7da;
color: #721c24;
}
button {
padding: 8px 16px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
margin-right: 10px;
}
button:hover {
background-color: #45a049;
}
button:disabled {
background-color: #cccccc;
cursor: not-allowed;
}
.container {
display: flex;
flex: 1;
overflow: hidden;
}
#canvas-container {
flex: 3;
position: relative;
}
#sidebar {
flex: 1;
padding: 15px;
background-color: #f8f9fa;
overflow-y: auto;
max-width: 300px;
border-left: 1px solid #ddd;
}
.joint-info {
margin-bottom: 10px;
padding: 8px;
border: 1px solid #ddd;
border-radius: 4px;
}
.joint-name {
font-weight: bold;
}
.joint-value {
font-family: monospace;
}
.bar-container {
width: 100%;
background-color: #e0e0e0;
height: 10px;
border-radius: 5px;
overflow: hidden;
margin-top: 5px;
}
.bar {
height: 100%;
background-color: #4CAF50;
width: 0%;
transition: width 0.2s ease-in-out;
}
.log-container {
margin-top: 20px;
border: 1px solid #ddd;
border-radius: 5px;
padding: 10px;
height: 150px;
overflow-y: auto;
font-family: monospace;
background-color: #f8f9fa;
}
.view-controls {
position: absolute;
bottom: 10px;
left: 10px;
z-index: 10;
}
.view-button {
background-color: rgba(0, 0, 0, 0.5);
color: white;
border: none;
padding: 5px 10px;
margin-right: 5px;
border-radius: 3px;
cursor: pointer;
}
</style>
</head>
<body>
<div class="controls">
<button id="connectButton">Connect to Device</button>
<button id="disconnectButton" disabled>Disconnect</button>
<select id="baudRate">
<option value="9600">9600</option>
<option value="19200">19200</option>
<option value="38400">38400</option>
<option value="57600">57600</option>
<option value="115200" selected>115200</option>
</select>
<span id="statusIndicator" class="status disconnected">Status: Disconnected</span>
</div>
<div class="container">
<div id="canvas-container">
<!-- 3D canvas will be inserted here -->
<div class="view-controls">
<button class="view-button" id="frontView">Front</button>
<button class="view-button" id="sideView">Side</button>
<button class="view-button" id="topView">Top</button>
<button class="view-button" id="resetView">Reset</button>
</div>
</div>
<div id="sidebar">
<h3>Joint Values</h3>
<div id="jointsContainer">
<!-- Joint info will be added here -->
</div>
<div class="log-container" id="logContainer">
<!-- Log messages will be added here -->
</div>
</div>
</div>
<!-- Import Three.js -->
<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/build/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/examples/js/controls/OrbitControls.js"></script>
<script src="script.js"></script>
</body>
</html>
+669
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@@ -0,0 +1,669 @@
// === Hand Visualizer with Pre-Connect Sliders + Per-Joint Angle Limits ===
// Assumes your HTML already has elements with the following IDs:
// connectButton, disconnectButton, baudRate, statusIndicator, jointsContainer, logContainer,
// canvas-container, frontView, sideView, topView, resetView
// Requires Three.js + OrbitControls loaded on the page.
// -------------------- Config --------------------
const MAX_JOINTS = 16;
const RAW_MIN = 0, RAW_MAX = 4096;
const RAW_CENTER = (RAW_MIN + RAW_MAX) / 2;
const DEG = Math.PI / 180;
const UI_DEG_MIN = -90, UI_DEG_MAX = 90; // UI sliders for angle limits
// -------------------- State --------------------
let port;
let reader;
let keepReading = false;
let isConnected = false;
const decoder = new TextDecoder();
let inputBuffer = '';
let jointValues = new Array(MAX_JOINTS).fill(RAW_CENTER);
// Auto-calibration: track observed min/max per joint
let observedMin = new Array(MAX_JOINTS).fill(Infinity);
let observedMax = new Array(MAX_JOINTS).fill(-Infinity);
let calibrationEnabled = true;
// Three.js
let scene, camera, renderer, controls;
let hand = { palm: null, fingers: [] };
// DOM
const connectButton = document.getElementById('connectButton');
const disconnectButton = document.getElementById('disconnectButton');
const baudRateSelect = document.getElementById('baudRate');
const statusIndicator = document.getElementById('statusIndicator');
const jointsContainer = document.getElementById('jointsContainer');
const logContainer = document.getElementById('logContainer');
const canvasContainer = document.getElementById('canvas-container');
const frontViewBtn = document.getElementById('frontView');
const sideViewBtn = document.getElementById('sideView');
const topViewBtn = document.getElementById('topView');
const resetViewBtn = document.getElementById('resetView');
// Helpers
const clamp = (x, a, b) => Math.max(a, Math.min(b, x));
const invLerp = (a, b, x) => clamp((x - a) / (b - a), 0, 1);
// -------------------- Joint Map with per-joint angle limits --------------------
const fingerJointMap = [
// Thumb (4)
{ finger:0, joint:0, type:'CMC_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:0, joint:1, type:'CMC_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:0, joint:2, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
{ finger:0, joint:3, type:'IP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
// Index (3)
{ finger:1, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:1, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:1, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
// Middle (3)
{ finger:2, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:2, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:2, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
// Ring (3)
{ finger:3, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:3, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:3, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false }, // +45° only
// Pinky (3)
{ finger:4, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:4, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:4, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false } // +45° only
];
// Assign angle limits (radians) per joint (default ±45°, exceptions: +45° only)
for (const j of fingerJointMap) {
const isThumb = j.finger === 0;
const isPIP = j.type === 'PIP_FLEXION';
let minA = -45 * DEG, maxA = +45 * DEG;
if ((isThumb && (j.type === 'MCP_FLEXION' || j.type === 'IP_FLEXION')) || (!isThumb && isPIP)) {
minA = 0;
maxA = +45 * DEG;
}
j.angleMin = minA;
j.angleMax = maxA;
}
// -------------------- UI: Joint Panel --------------------
const uiRefs = []; // per joint: { valueLabel, bar, barWrap, slider, invertChk, minDeg, maxDeg }
function initializeJointElements() {
jointsContainer.innerHTML = '';
uiRefs.length = 0;
for (let i = 0; i < MAX_JOINTS; i++) {
const wrap = document.createElement('div');
wrap.className = 'joint-info';
const fingerIndex = i < 4 ? 0 : Math.floor((i - 4) / 3) + 1;
const jointInfo = fingerJointMap[i];
const jointType = jointInfo?.type || 'Unknown';
const fingerName = ['Thumb', 'Index', 'Middle', 'Ring', 'Pinky'][fingerIndex];
// Header
const nameEl = document.createElement('div');
nameEl.className = 'joint-name';
nameEl.textContent = `${fingerName} ${jointType}`;
// Value + bar
const valueEl = document.createElement('div');
valueEl.className = 'joint-value';
valueEl.textContent = `Value: ${jointValues[i]}`;
const barWrap = document.createElement('div');
barWrap.className = 'bar-container';
const barEl = document.createElement('div');
barEl.className = 'bar';
barWrap.appendChild(barEl);
// Slider for pre-connect manual control
const slider = document.createElement('input');
slider.type = 'range';
slider.min = String(RAW_MIN);
slider.max = String(RAW_MAX);
slider.value = String(jointValues[i]);
slider.step = '1';
slider.className = 'joint-slider';
slider.addEventListener('input', () => {
if (isConnected) return; // ignore while connected
let v = parseInt(slider.value, 10);
if (jointInfo?.inverted) v = (jointInfo.min + jointInfo.max) - v;
jointValues[i] = clamp(jointInfo ? v : 0, RAW_MIN, RAW_MAX);
updateJointDisplay(i, jointValues[i]);
updateHandModel();
});
// Invert checkbox
const invertLbl = document.createElement('label');
invertLbl.className = 'invert-toggle';
const invertChk = document.createElement('input');
invertChk.type = 'checkbox';
invertChk.checked = !!jointInfo?.inverted;
invertChk.addEventListener('change', () => {
if (jointInfo) jointInfo.inverted = invertChk.checked;
addLogMessage(`${fingerName} ${jointType} inversion ${invertChk.checked ? 'enabled' : 'disabled'}`);
});
invertLbl.appendChild(invertChk);
invertLbl.appendChild(document.createTextNode('Invert Values'));
// Angle limits (deg) controls
const limitsRow = document.createElement('div');
limitsRow.className = 'limits-row';
const minDeg = document.createElement('input');
minDeg.type = 'number';
minDeg.min = String(UI_DEG_MIN);
minDeg.max = String(UI_DEG_MAX);
minDeg.step = '1';
minDeg.value = String(Math.round((jointInfo.angleMin || 0) / DEG));
minDeg.className = 'limit-num';
const maxDeg = document.createElement('input');
maxDeg.type = 'number';
maxDeg.min = String(UI_DEG_MIN);
maxDeg.max = String(UI_DEG_MAX);
maxDeg.step = '1';
maxDeg.value = String(Math.round((jointInfo.angleMax || 0) / DEG));
maxDeg.className = 'limit-num';
const minLbl = document.createElement('span'); minLbl.textContent = 'min°';
const maxLbl = document.createElement('span'); maxLbl.textContent = 'max°';
minLbl.className = 'limit-label'; maxLbl.className = 'limit-label';
function syncLimits() {
let mn = parseFloat(minDeg.value);
let mx = parseFloat(maxDeg.value);
if (isNaN(mn)) mn = -45;
if (isNaN(mx)) mx = +45;
if (mn > mx) [mn, mx] = [mx, mn];
jointInfo.angleMin = clamp(mn, UI_DEG_MIN, UI_DEG_MAX) * DEG;
jointInfo.angleMax = clamp(mx, UI_DEG_MIN, UI_DEG_MAX) * DEG;
minDeg.value = String(Math.round(jointInfo.angleMin / DEG));
maxDeg.value = String(Math.round(jointInfo.angleMax / DEG));
updateHandModel();
}
minDeg.addEventListener('change', syncLimits);
maxDeg.addEventListener('change', syncLimits);
limitsRow.appendChild(minLbl);
limitsRow.appendChild(minDeg);
limitsRow.appendChild(maxLbl);
limitsRow.appendChild(maxDeg);
// Calibration controls
const calibRow = document.createElement('div');
calibRow.className = 'calib-row';
const resetCalibBtn = document.createElement('button');
resetCalibBtn.textContent = 'Reset Calib';
resetCalibBtn.className = 'calib-btn';
resetCalibBtn.addEventListener('click', () => {
observedMin[i] = Infinity;
observedMax[i] = -Infinity;
addLogMessage(`Reset calibration for ${fingerName} ${jointType}`);
});
const calibStatus = document.createElement('span');
calibStatus.className = 'calib-status';
calibStatus.textContent = `Range: --`;
calibRow.appendChild(resetCalibBtn);
calibRow.appendChild(calibStatus);
// Compose
wrap.appendChild(nameEl);
wrap.appendChild(valueEl);
wrap.appendChild(barWrap);
wrap.appendChild(slider);
wrap.appendChild(invertLbl);
wrap.appendChild(limitsRow);
wrap.appendChild(calibRow);
jointsContainer.appendChild(wrap);
uiRefs[i] = { valueLabel: valueEl, bar: barEl, barWrap, slider, invertChk, minDeg, maxDeg, nameEl, calibStatus };
}
setConnectedUI(false); // initial state: sliders active
}
// Toggle UI between pre-connect SLIDERS vs post-connect BARS
function setConnectedUI(connected) {
isConnected = connected;
for (let i = 0; i < uiRefs.length; i++) {
const ui = uiRefs[i];
if (!ui) continue;
// Show bars when connected; sliders disabled/hidden
ui.barWrap.style.display = connected ? '' : 'none';
ui.slider.disabled = connected;
ui.slider.style.display = connected ? 'none' : '';
}
// Reset calibration when connecting
if (connected) {
observedMin.fill(Infinity);
observedMax.fill(-Infinity);
addLogMessage('Calibration reset - move joints through full range for best results');
}
}
// Update joint display (value text + bar color/width + slider position if needed)
function updateJointDisplay(jointIndex, value) {
const ui = uiRefs[jointIndex];
const info = fingerJointMap[jointIndex];
if (!ui || !info) return;
ui.valueLabel.textContent = `Value: ${value}`;
// bar
const min = info.min, max = info.max;
const pct = clamp((value - min) / (max - min), 0, 1) * 100;
ui.bar.style.width = `${pct}%`;
const hue = Math.floor(pct * 1.2); // 0..120
ui.bar.style.backgroundColor = `hsl(${hue}, 80%, 50%)`;
// slider (only meaningful when not connected; keep in sync anyway)
const rawForSlider = info.inverted ? (info.min + info.max) - value : value;
if (!isConnected) ui.slider.value = String(clamp(Math.round(rawForSlider), RAW_MIN, RAW_MAX));
}
// -------------------- Serial I/O --------------------
async function readSerialData() {
while (port?.readable && keepReading) {
reader = port.readable.getReader();
try {
while (true) {
const { value, done } = await reader.read();
if (done) break;
if (value) processData(decoder.decode(value));
}
} catch (err) {
console.error('Error reading:', err);
addLogMessage(`Error: ${err.message}`);
break;
} finally {
reader.releaseLock();
}
}
}
function processData(chunk) {
inputBuffer += chunk;
let idx;
while ((idx = inputBuffer.indexOf('\n')) !== -1) {
const line = inputBuffer.slice(0, idx).trim();
inputBuffer = inputBuffer.slice(idx + 1);
const vals = line.split(/\s+/).map(v => parseInt(v, 10));
if (vals.length === MAX_JOINTS && vals.every(v => Number.isFinite(v))) {
for (let i = 0; i < MAX_JOINTS; i++) {
const info = fingerJointMap[i];
if (!info) continue;
let rawValue = vals[i];
// Update calibration tracking
if (calibrationEnabled) {
observedMin[i] = Math.min(observedMin[i], rawValue);
observedMax[i] = Math.max(observedMax[i], rawValue);
// Update calibration display
const ui = uiRefs[i];
if (ui && ui.calibStatus) {
if (observedMin[i] !== Infinity && observedMax[i] !== -Infinity) {
ui.calibStatus.textContent = `Range: ${observedMin[i]}-${observedMax[i]}`;
}
}
// Remap observed range to target range
if (observedMin[i] !== Infinity && observedMax[i] !== -Infinity && observedMax[i] > observedMin[i]) {
const observedRange = observedMax[i] - observedMin[i];
const targetRange = info.max - info.min;
const normalizedValue = (rawValue - observedMin[i]) / observedRange;
rawValue = info.min + (normalizedValue * targetRange);
}
}
let v = clamp(rawValue, info.min, info.max);
if (info.inverted) v = (info.min + info.max) - v;
jointValues[i] = v;
updateJointDisplay(i, v);
}
updateHandModel();
} else {
addLogMessage(`Received: ${line}`);
}
}
}
async function connectToDevice() {
try {
port = await navigator.serial.requestPort();
const baudRate = parseInt(baudRateSelect.value, 10) || 115200;
await port.open({ baudRate });
keepReading = true;
setConnectedUI(true);
statusIndicator.textContent = 'Status: Connected';
statusIndicator.className = 'status connected';
connectButton.disabled = true;
disconnectButton.disabled = false;
baudRateSelect.disabled = true;
addLogMessage(`Connected at ${baudRate} baud`);
readSerialData();
} catch (e) {
console.error('Connect error:', e);
addLogMessage(`Connection error: ${e.message}`);
}
}
async function disconnectFromDevice() {
try {
keepReading = false;
if (reader) {
try { reader.cancel(); } catch {}
}
if (port) {
await port.close();
port = null;
}
} catch (e) {
console.error('Disconnect error:', e);
addLogMessage(`Disconnection error: ${e.message}`);
} finally {
setConnectedUI(false);
statusIndicator.textContent = 'Status: Disconnected';
statusIndicator.className = 'status disconnected';
connectButton.disabled = false;
disconnectButton.disabled = true;
baudRateSelect.disabled = false;
addLogMessage('Disconnected');
}
}
// -------------------- Three.js Scene --------------------
function initThreeJS() {
scene = new THREE.Scene();
scene.background = new THREE.Color(0xf0f0f0);
camera = new THREE.PerspectiveCamera(
75,
canvasContainer.clientWidth / canvasContainer.clientHeight,
0.1, 1000
);
camera.position.set(0, 15, 15);
camera.lookAt(0, 0, 0);
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(canvasContainer.clientWidth, canvasContainer.clientHeight);
renderer.setPixelRatio(window.devicePixelRatio);
canvasContainer.appendChild(renderer.domElement);
controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.25;
const ambientLight = new THREE.AmbientLight(0x404040);
scene.add(ambientLight);
const dir1 = new THREE.DirectionalLight(0xffffff, 0.5);
dir1.position.set(1, 1, 1);
scene.add(dir1);
const dir2 = new THREE.DirectionalLight(0xffffff, 0.3);
dir2.position.set(-1, 1, -1);
scene.add(dir2);
const gridHelper = new THREE.GridHelper(20, 20);
scene.add(gridHelper);
createHandModel();
window.addEventListener('resize', onWindowResize);
animate();
}
function createHandModel() {
const palmMaterial = new THREE.MeshPhongMaterial({ color: 0xf5c396 });
const fingerMaterial = new THREE.MeshPhongMaterial({ color: 0xf5c396 });
const jointMaterial = new THREE.MeshPhongMaterial({ color: 0xe3a977 });
const palmGeometry = new THREE.BoxGeometry(7, 1, 8);
hand.palm = new THREE.Mesh(palmGeometry, palmMaterial);
hand.palm.position.set(0, 0, 0);
hand.palm.rotation.x = Math.PI / 2; // hand vertical, palm facing forward
scene.add(hand.palm);
const fingerWidth = 1, fingerHeight = 0.8;
const fingerSegmentLengths = [3, 2, 1.5];
const thumbSegmentLengths = [2, 2, 1.5];
const fingerBasePositions = [
[ 3, 0, -2], // Thumb
[ 1.5,-0.5,-4], // Index
[ 0, -0.5,-4], // Middle
[-1.5,-0.5,-4], // Ring
[-3, -0.5,-4], // Pinky
];
const fingerBaseRot = [
{ x:0, y:-Math.PI/3, z: Math.PI/3 }, // Thumb
{ x:0, y:-Math.PI/48, z: 0 },
{ x:0, y: Math.PI/48, z: 0 },
{ x:0, y: Math.PI/32, z: 0 },
{ x:0, y: Math.PI/24, z: 0 }
];
for (let fIdx = 0; fIdx < 5; fIdx++) {
const finger = { name:['Thumb','Index','Middle','Ring','Pinky'][fIdx], segments:[], joints:[] };
const isThumb = fIdx === 0;
const segLens = isThumb ? thumbSegmentLengths : fingerSegmentLengths;
finger.group = new THREE.Group();
finger.group.position.set(...fingerBasePositions[fIdx]);
finger.group.rotation.x = fingerBaseRot[fIdx].x;
finger.group.rotation.y = fingerBaseRot[fIdx].y;
finger.group.rotation.z = fingerBaseRot[fIdx].z;
finger.group.userData.baseRot = {
x:finger.group.rotation.x,
y:finger.group.rotation.y,
z:finger.group.rotation.z
};
hand.palm.add(finger.group);
let parent = finger.group;
for (let s = 0; s < segLens.length; s++) {
const segGroup = new THREE.Group();
const jGeom = new THREE.SphereGeometry(fingerWidth * 0.6, 8, 8);
const joint = new THREE.Mesh(jGeom, jointMaterial);
segGroup.add(joint);
const segGeom = new THREE.BoxGeometry(fingerWidth, fingerHeight, segLens[s]);
const seg = new THREE.Mesh(segGeom, fingerMaterial);
seg.position.z = -segLens[s] / 2;
segGroup.add(seg);
parent.add(segGroup);
finger.segments.push(segGroup);
finger.joints.push(joint);
if (s < segLens.length - 1) {
const connector = new THREE.Group();
connector.position.z = -segLens[s];
segGroup.add(connector);
parent = connector;
}
}
hand.fingers.push(finger);
}
addFingerLabels();
addHandLabel();
}
function addFingerLabels() {
const names = ['Thumb','Index','Middle','Ring','Pinky'];
for (let i = 0; i < hand.fingers.length; i++) {
const finger = hand.fingers[i];
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
canvas.width = 128; canvas.height = 32;
ctx.fillStyle = '#ffffff'; ctx.fillRect(0,0,canvas.width,canvas.height);
ctx.font = 'bold 16px Arial';
ctx.fillStyle = '#000000';
ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
ctx.fillText(names[i], canvas.width/2, canvas.height/2);
const texture = new THREE.CanvasTexture(canvas);
const geom = new THREE.PlaneGeometry(2, 0.5);
const mat = new THREE.MeshBasicMaterial({ map:texture, transparent:true, side:THREE.DoubleSide });
const label = new THREE.Mesh(geom, mat);
label.position.set(0, -1.5, -2);
label.rotation.x = Math.PI / 2;
finger.group.add(label);
}
}
function addHandLabel() {
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
canvas.width = 256; canvas.height = 64;
ctx.fillStyle = '#ffffff'; ctx.fillRect(0,0,canvas.width,canvas.height);
ctx.font = 'bold 24px Arial';
ctx.fillStyle = '#000000';
ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
ctx.fillText('RIGHT HAND (VERTICAL)', canvas.width/2, canvas.height/2);
const texture = new THREE.CanvasTexture(canvas);
const geom = new THREE.PlaneGeometry(7, 1.75);
const mat = new THREE.MeshBasicMaterial({ map:texture, transparent:true, side:THREE.DoubleSide });
const label = new THREE.Mesh(geom, mat);
label.position.set(0, -2, 0);
label.rotation.x = Math.PI / 2;
scene.add(label);
}
function updateHandModel() {
for (let i = 0; i < MAX_JOINTS; i++) {
const info = fingerJointMap[i];
if (!info) continue;
const { finger, joint, type, min, max, angleMin, angleMax } = info;
const raw = jointValues[i];
const f = hand.fingers[finger];
if (!f) continue;
const center = (min + max) / 2;
let angle = 0;
if (type.includes('ABDUCTION')) {
// symmetric around neutral
const k = clamp((raw - center) / ((max - min) / 2), -1, 1);
angle = angleMin + (k + 1) * 0.5 * (angleMax - angleMin);
const base = f.group.userData.baseRot || {x:0,y:0,z:0};
if (finger === 0 && joint === 0) {
// Thumb: abduction about Z (toward/away from palm)
f.group.rotation.z = base.z + angle;
} else {
// Other fingers: side-to-side about Y
f.group.rotation.y = base.y + angle;
}
} else if (type.includes('FLEXION')) {
const isThumb = finger === 0;
const isMCP = type === 'MCP_FLEXION';
const isPIP = type === 'PIP_FLEXION';
const positiveOnly = (isThumb && (type === 'MCP_FLEXION' || type === 'IP_FLEXION')) || (!isThumb && isPIP);
if (positiveOnly) {
const t = raw <= center ? 0 : invLerp(center, max, raw); // 0..1
angle = angleMin + t * (angleMax - angleMin); // 0..+limit
} else {
const k = clamp((raw - center) / ((max - min) / 2), -1, 1);
angle = angleMin + (k + 1) * 0.5 * (angleMax - angleMin);
}
if (isMCP) {
// MCP flexion applies to the finger base group (same as abduction)
const base = f.group.userData.baseRot || {x:0,y:0,z:0};
f.group.rotation.x = base.x + angle;
} else if (f.segments[joint]) {
// PIP/DIP/IP flexion applies to individual segments
f.segments[joint].rotation.x = angle;
}
}
}
}
// -------------------- Render Loop --------------------
function onWindowResize() {
camera.aspect = canvasContainer.clientWidth / canvasContainer.clientHeight;
camera.updateProjectionMatrix();
renderer.setSize(canvasContainer.clientWidth, canvasContainer.clientHeight);
}
function animate() {
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
}
// -------------------- Misc UI --------------------
function addLogMessage(msg) {
const el = document.createElement('div');
el.textContent = msg;
logContainer.appendChild(el);
logContainer.scrollTop = logContainer.scrollHeight;
while (logContainer.children.length > 100) {
logContainer.removeChild(logContainer.firstChild);
}
}
// Camera view controls
frontViewBtn?.addEventListener('click', () => { camera.position.set(0, 0, 20); camera.lookAt(0,0,0); controls.update(); });
sideViewBtn?.addEventListener('click', () => { camera.position.set(20, 0, 0); camera.lookAt(0,0,0); controls.update(); });
topViewBtn?.addEventListener('click', () => { camera.position.set(0, 20, 0); camera.lookAt(0,0,0); controls.update(); });
resetViewBtn?.addEventListener('click', () => { camera.position.set(10,10,10); camera.lookAt(0,0,0); controls.update(); });
// Serial connect buttons
connectButton?.addEventListener('click', connectToDevice);
disconnectButton?.addEventListener('click', disconnectFromDevice);
// Web Serial support check
if (!navigator.serial) {
statusIndicator.textContent = 'Status: Web Serial API not supported in this browser';
connectButton.disabled = true;
addLogMessage('ERROR: Web Serial API is not supported in this browser. Try Chrome or Edge.');
}
// -------------------- Boot --------------------
initThreeJS();
initializeJointElements();
// -------------------- Styles (inline) --------------------
const styleElement = document.createElement('style');
styleElement.textContent = `
.joint-info { border-bottom: 1px solid #eee; padding: 8px 0; }
.joint-name { font-weight: 600; margin-bottom: 4px; }
.joint-value { font-size: 12px; color: #333; margin-bottom: 4px; }
.bar-container { width: 100%; height: 8px; background: #ddd; border-radius: 4px; overflow: hidden; }
.bar { height: 100%; width: 0%; background: #4caf50; }
.joint-slider { width: 100%; margin: 6px 0; }
.invert-toggle { display: inline-flex; align-items: center; gap: 6px; margin-top: 4px; font-size: 12px; color: #555; }
.limits-row { display: flex; align-items: center; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.limit-label { font-size: 11px; color: #666; }
.limit-num { width: 60px; }
.calib-row { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.calib-btn { padding: 2px 6px; font-size: 11px; background: #f44336; color: white; border: none; border-radius: 3px; cursor: pointer; }
.calib-btn:hover { background: #d32f2f; }
.calib-status { font-size: 11px; color: #666; }
.status.connected { color: #0a0; }
.status.disconnected { color: #a00; }
`;
document.head.appendChild(styleElement);
@@ -30,13 +30,19 @@ This is a Gaussian Actor policy (Gaussian policy with a tanh squash) — the pol
{% elif model_name == "eo1" %}
[EO-1](https://huggingface.co/papers/2508.21112) is a Vision-Language-Action model for general robot control. It pairs a Qwen2.5-VL backbone for vision-language understanding with a continuous flow-matching action head that denoises action chunks.
{% elif model_name == "groot" %}
[GR00T N1.5](https://github.com/NVIDIA/Isaac-GR00T) is an open, cross-embodiment foundation model from NVIDIA for generalized humanoid robot reasoning and skills. It takes language and images as input and uses a flow-matching action transformer to predict actions conditioned on vision, language, and proprioception.
[GR00T N1.7](https://github.com/NVIDIA/Isaac-GR00T) is an open, cross-embodiment foundation model from NVIDIA for generalized humanoid robot reasoning and skills. It uses a Cosmos-Reason2/Qwen3-VL backbone and a flow-matching action transformer to predict actions conditioned on vision, language, and proprioception.
{% elif model_name == "multi_task_dit" %}
[Multi-Task Diffusion Transformer (DiT)](https://huggingface.co/papers/2507.05331) extends Diffusion Policy with a large Diffusion Transformer and text + vision conditioning for multi-task robot learning. It supports both diffusion and flow-matching objectives and reaches high dexterity with only ~450M parameters.
{% elif model_name == "wall_x" %}
[WALL-OSS](https://huggingface.co/papers/2509.11766) is an open-source foundation model for embodied intelligence from XSquare Robot. Built on Qwen2.5-VL, it uses a tightly-coupled multimodal architecture with flow matching to unify semantic reasoning and high-frequency action generation for cross-embodiment control.
{% elif model_name == "xvla" %}
[X-VLA](https://huggingface.co/papers/2510.10274) is a soft-prompted, flow-matching Vision-Language-Action framework that treats each robot or hardware setup as a "task" encoded with a small set of learnable Soft Prompt embeddings, letting a single model reconcile diverse robot morphologies, sensors, and action spaces.
{% elif model_name == "evo1" %}
[EVO1](https://github.com/MINT-SJTU/Evo-1) is a Vision-Language-Action policy built around an InternVL3 backbone and a continuous flow-matching action head. It embeds camera images and the language instruction with InternVL3 and predicts future action chunks via flow matching.
{% elif model_name == "fastwam" %}
[FastWAM](https://arxiv.org/abs/2603.16666) is a World Action Model policy that keeps video world-modeling during training but predicts actions directly at inference time, initializing its visual world-model components from the Wan2.2 video-diffusion stack.
{% elif model_name == "lingbot_va" %}
[LingBot-VA](https://github.com/Robbyant/lingbot-va) is an autoregressive video-action world-model policy built on the Wan2.2 video-diffusion stack. It interleaves the prediction of future video latents and robot actions in a single autoregressive sequence, feeding observed keyframes back into its KV cache for closed-loop world modeling.
{% else %}
This is a **{{ model_name }}** policy trained with [LeRobot](https://github.com/huggingface/lerobot).
{% endif %}
@@ -75,7 +81,10 @@ This policy has been trained and pushed to the Hub using [LeRobot](https://githu
"groot": "groot",
"xvla": "xvla",
"multi_task_dit": "multi_task_dit",
"wall_x": "walloss"
"wall_x": "walloss",
"evo1": "evo1",
"fastwam": "fastwam",
"lingbot_va": "lingbot_va"
} %}
{% if policy_docs.get(model_name) %}Learn how to train and run it in the [LeRobot {{ model_name }} guide](https://huggingface.co/docs/lerobot/main/en/{{ policy_docs[model_name] }}), or browse the [full documentation](https://huggingface.co/docs/lerobot/index).
{% else %}See the [full LeRobot documentation](https://huggingface.co/docs/lerobot/index).
+182
View File
@@ -0,0 +1,182 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>3D Hand Joint Visualizer</title>
<style>
body {
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
overflow: hidden;
display: flex;
flex-direction: column;
height: 100vh;
}
.controls {
padding: 15px;
background-color: #f5f5f5;
z-index: 100;
}
.status {
padding: 10px;
border-radius: 5px;
margin: 10px 0;
}
.connected {
background-color: #d4edda;
color: #155724;
}
.disconnected {
background-color: #f8d7da;
color: #721c24;
}
button {
padding: 8px 16px;
background-color: #4CAF50;
color: white;
border: none;
border-radius: 4px;
cursor: pointer;
margin-right: 10px;
}
button:hover {
background-color: #45a049;
}
button:disabled {
background-color: #cccccc;
cursor: not-allowed;
}
.container {
display: flex;
flex: 1;
overflow: hidden;
}
#canvas-container {
flex: 3;
position: relative;
}
#sidebar {
flex: 1;
padding: 15px;
background-color: #f8f9fa;
overflow-y: auto;
max-width: 300px;
border-left: 1px solid #ddd;
}
.joint-info {
margin-bottom: 10px;
padding: 8px;
border: 1px solid #ddd;
border-radius: 4px;
}
.joint-name {
font-weight: bold;
}
.joint-value {
font-family: monospace;
}
.bar-container {
width: 100%;
background-color: #e0e0e0;
height: 10px;
border-radius: 5px;
overflow: hidden;
margin-top: 5px;
}
.bar {
height: 100%;
background-color: #4CAF50;
width: 0%;
transition: width 0.2s ease-in-out;
}
.log-container {
margin-top: 20px;
border: 1px solid #ddd;
border-radius: 5px;
padding: 10px;
height: 150px;
overflow-y: auto;
font-family: monospace;
background-color: #f8f9fa;
}
.view-controls {
position: absolute;
bottom: 10px;
left: 10px;
z-index: 10;
}
.view-button {
background-color: rgba(0, 0, 0, 0.5);
color: white;
border: none;
padding: 5px 10px;
margin-right: 5px;
border-radius: 3px;
cursor: pointer;
}
</style>
</head>
<body>
<div class="controls">
<button id="connectButton">Connect to Device</button>
<button id="disconnectButton" disabled>Disconnect</button>
<select id="baudRate">
<option value="9600">9600</option>
<option value="19200">19200</option>
<option value="38400">38400</option>
<option value="57600">57600</option>
<option value="115200" selected>115200</option>
</select>
<span id="statusIndicator" class="status disconnected">Status: Disconnected</span>
</div>
<div class="container">
<div id="canvas-container">
<!-- 3D canvas will be inserted here -->
<div class="view-controls">
<button class="view-button" id="frontView">Front</button>
<button class="view-button" id="sideView">Side</button>
<button class="view-button" id="topView">Top</button>
<button class="view-button" id="resetView">Reset</button>
</div>
</div>
<div id="sidebar">
<h3>Joint Values</h3>
<div id="jointsContainer">
<!-- Joint info will be added here -->
</div>
<div class="log-container" id="logContainer">
<!-- Log messages will be added here -->
</div>
</div>
</div>
<!-- Import Three.js -->
<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/build/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/three@0.132.2/examples/js/controls/OrbitControls.js"></script>
<script src="script.js"></script>
</body>
</html>
+669
View File
@@ -0,0 +1,669 @@
// === Hand Visualizer with Pre-Connect Sliders + Per-Joint Angle Limits ===
// Assumes your HTML already has elements with the following IDs:
// connectButton, disconnectButton, baudRate, statusIndicator, jointsContainer, logContainer,
// canvas-container, frontView, sideView, topView, resetView
// Requires Three.js + OrbitControls loaded on the page.
// -------------------- Config --------------------
const MAX_JOINTS = 16;
const RAW_MIN = 0, RAW_MAX = 4096;
const RAW_CENTER = (RAW_MIN + RAW_MAX) / 2;
const DEG = Math.PI / 180;
const UI_DEG_MIN = -90, UI_DEG_MAX = 90; // UI sliders for angle limits
// -------------------- State --------------------
let port;
let reader;
let keepReading = false;
let isConnected = false;
const decoder = new TextDecoder();
let inputBuffer = '';
let jointValues = new Array(MAX_JOINTS).fill(RAW_CENTER);
// Auto-calibration: track observed min/max per joint
let observedMin = new Array(MAX_JOINTS).fill(Infinity);
let observedMax = new Array(MAX_JOINTS).fill(-Infinity);
let calibrationEnabled = true;
// Three.js
let scene, camera, renderer, controls;
let hand = { palm: null, fingers: [] };
// DOM
const connectButton = document.getElementById('connectButton');
const disconnectButton = document.getElementById('disconnectButton');
const baudRateSelect = document.getElementById('baudRate');
const statusIndicator = document.getElementById('statusIndicator');
const jointsContainer = document.getElementById('jointsContainer');
const logContainer = document.getElementById('logContainer');
const canvasContainer = document.getElementById('canvas-container');
const frontViewBtn = document.getElementById('frontView');
const sideViewBtn = document.getElementById('sideView');
const topViewBtn = document.getElementById('topView');
const resetViewBtn = document.getElementById('resetView');
// Helpers
const clamp = (x, a, b) => Math.max(a, Math.min(b, x));
const invLerp = (a, b, x) => clamp((x - a) / (b - a), 0, 1);
// -------------------- Joint Map with per-joint angle limits --------------------
const fingerJointMap = [
// Thumb (4)
{ finger:0, joint:0, type:'CMC_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:0, joint:1, type:'CMC_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:0, joint:2, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
{ finger:0, joint:3, type:'IP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
// Index (3)
{ finger:1, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:1, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:1, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
// Middle (3)
{ finger:2, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:2, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:2, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:true }, // +45° only
// Ring (3)
{ finger:3, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:true },
{ finger:3, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:3, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false }, // +45° only
// Pinky (3)
{ finger:4, joint:0, type:'MCP_ABDUCTION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:4, joint:1, type:'MCP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false },
{ finger:4, joint:2, type:'PIP_FLEXION', min:RAW_MIN, max:RAW_MAX, inverted:false } // +45° only
];
// Assign angle limits (radians) per joint (default ±45°, exceptions: +45° only)
for (const j of fingerJointMap) {
const isThumb = j.finger === 0;
const isPIP = j.type === 'PIP_FLEXION';
let minA = -45 * DEG, maxA = +45 * DEG;
if ((isThumb && (j.type === 'MCP_FLEXION' || j.type === 'IP_FLEXION')) || (!isThumb && isPIP)) {
minA = 0;
maxA = +45 * DEG;
}
j.angleMin = minA;
j.angleMax = maxA;
}
// -------------------- UI: Joint Panel --------------------
const uiRefs = []; // per joint: { valueLabel, bar, barWrap, slider, invertChk, minDeg, maxDeg }
function initializeJointElements() {
jointsContainer.innerHTML = '';
uiRefs.length = 0;
for (let i = 0; i < MAX_JOINTS; i++) {
const wrap = document.createElement('div');
wrap.className = 'joint-info';
const fingerIndex = i < 4 ? 0 : Math.floor((i - 4) / 3) + 1;
const jointInfo = fingerJointMap[i];
const jointType = jointInfo?.type || 'Unknown';
const fingerName = ['Thumb', 'Index', 'Middle', 'Ring', 'Pinky'][fingerIndex];
// Header
const nameEl = document.createElement('div');
nameEl.className = 'joint-name';
nameEl.textContent = `${fingerName} ${jointType}`;
// Value + bar
const valueEl = document.createElement('div');
valueEl.className = 'joint-value';
valueEl.textContent = `Value: ${jointValues[i]}`;
const barWrap = document.createElement('div');
barWrap.className = 'bar-container';
const barEl = document.createElement('div');
barEl.className = 'bar';
barWrap.appendChild(barEl);
// Slider for pre-connect manual control
const slider = document.createElement('input');
slider.type = 'range';
slider.min = String(RAW_MIN);
slider.max = String(RAW_MAX);
slider.value = String(jointValues[i]);
slider.step = '1';
slider.className = 'joint-slider';
slider.addEventListener('input', () => {
if (isConnected) return; // ignore while connected
let v = parseInt(slider.value, 10);
if (jointInfo?.inverted) v = (jointInfo.min + jointInfo.max) - v;
jointValues[i] = clamp(jointInfo ? v : 0, RAW_MIN, RAW_MAX);
updateJointDisplay(i, jointValues[i]);
updateHandModel();
});
// Invert checkbox
const invertLbl = document.createElement('label');
invertLbl.className = 'invert-toggle';
const invertChk = document.createElement('input');
invertChk.type = 'checkbox';
invertChk.checked = !!jointInfo?.inverted;
invertChk.addEventListener('change', () => {
if (jointInfo) jointInfo.inverted = invertChk.checked;
addLogMessage(`${fingerName} ${jointType} inversion ${invertChk.checked ? 'enabled' : 'disabled'}`);
});
invertLbl.appendChild(invertChk);
invertLbl.appendChild(document.createTextNode('Invert Values'));
// Angle limits (deg) controls
const limitsRow = document.createElement('div');
limitsRow.className = 'limits-row';
const minDeg = document.createElement('input');
minDeg.type = 'number';
minDeg.min = String(UI_DEG_MIN);
minDeg.max = String(UI_DEG_MAX);
minDeg.step = '1';
minDeg.value = String(Math.round((jointInfo.angleMin || 0) / DEG));
minDeg.className = 'limit-num';
const maxDeg = document.createElement('input');
maxDeg.type = 'number';
maxDeg.min = String(UI_DEG_MIN);
maxDeg.max = String(UI_DEG_MAX);
maxDeg.step = '1';
maxDeg.value = String(Math.round((jointInfo.angleMax || 0) / DEG));
maxDeg.className = 'limit-num';
const minLbl = document.createElement('span'); minLbl.textContent = 'min°';
const maxLbl = document.createElement('span'); maxLbl.textContent = 'max°';
minLbl.className = 'limit-label'; maxLbl.className = 'limit-label';
function syncLimits() {
let mn = parseFloat(minDeg.value);
let mx = parseFloat(maxDeg.value);
if (isNaN(mn)) mn = -45;
if (isNaN(mx)) mx = +45;
if (mn > mx) [mn, mx] = [mx, mn];
jointInfo.angleMin = clamp(mn, UI_DEG_MIN, UI_DEG_MAX) * DEG;
jointInfo.angleMax = clamp(mx, UI_DEG_MIN, UI_DEG_MAX) * DEG;
minDeg.value = String(Math.round(jointInfo.angleMin / DEG));
maxDeg.value = String(Math.round(jointInfo.angleMax / DEG));
updateHandModel();
}
minDeg.addEventListener('change', syncLimits);
maxDeg.addEventListener('change', syncLimits);
limitsRow.appendChild(minLbl);
limitsRow.appendChild(minDeg);
limitsRow.appendChild(maxLbl);
limitsRow.appendChild(maxDeg);
// Calibration controls
const calibRow = document.createElement('div');
calibRow.className = 'calib-row';
const resetCalibBtn = document.createElement('button');
resetCalibBtn.textContent = 'Reset Calib';
resetCalibBtn.className = 'calib-btn';
resetCalibBtn.addEventListener('click', () => {
observedMin[i] = Infinity;
observedMax[i] = -Infinity;
addLogMessage(`Reset calibration for ${fingerName} ${jointType}`);
});
const calibStatus = document.createElement('span');
calibStatus.className = 'calib-status';
calibStatus.textContent = `Range: --`;
calibRow.appendChild(resetCalibBtn);
calibRow.appendChild(calibStatus);
// Compose
wrap.appendChild(nameEl);
wrap.appendChild(valueEl);
wrap.appendChild(barWrap);
wrap.appendChild(slider);
wrap.appendChild(invertLbl);
wrap.appendChild(limitsRow);
wrap.appendChild(calibRow);
jointsContainer.appendChild(wrap);
uiRefs[i] = { valueLabel: valueEl, bar: barEl, barWrap, slider, invertChk, minDeg, maxDeg, nameEl, calibStatus };
}
setConnectedUI(false); // initial state: sliders active
}
// Toggle UI between pre-connect SLIDERS vs post-connect BARS
function setConnectedUI(connected) {
isConnected = connected;
for (let i = 0; i < uiRefs.length; i++) {
const ui = uiRefs[i];
if (!ui) continue;
// Show bars when connected; sliders disabled/hidden
ui.barWrap.style.display = connected ? '' : 'none';
ui.slider.disabled = connected;
ui.slider.style.display = connected ? 'none' : '';
}
// Reset calibration when connecting
if (connected) {
observedMin.fill(Infinity);
observedMax.fill(-Infinity);
addLogMessage('Calibration reset - move joints through full range for best results');
}
}
// Update joint display (value text + bar color/width + slider position if needed)
function updateJointDisplay(jointIndex, value) {
const ui = uiRefs[jointIndex];
const info = fingerJointMap[jointIndex];
if (!ui || !info) return;
ui.valueLabel.textContent = `Value: ${value}`;
// bar
const min = info.min, max = info.max;
const pct = clamp((value - min) / (max - min), 0, 1) * 100;
ui.bar.style.width = `${pct}%`;
const hue = Math.floor(pct * 1.2); // 0..120
ui.bar.style.backgroundColor = `hsl(${hue}, 80%, 50%)`;
// slider (only meaningful when not connected; keep in sync anyway)
const rawForSlider = info.inverted ? (info.min + info.max) - value : value;
if (!isConnected) ui.slider.value = String(clamp(Math.round(rawForSlider), RAW_MIN, RAW_MAX));
}
// -------------------- Serial I/O --------------------
async function readSerialData() {
while (port?.readable && keepReading) {
reader = port.readable.getReader();
try {
while (true) {
const { value, done } = await reader.read();
if (done) break;
if (value) processData(decoder.decode(value));
}
} catch (err) {
console.error('Error reading:', err);
addLogMessage(`Error: ${err.message}`);
break;
} finally {
reader.releaseLock();
}
}
}
function processData(chunk) {
inputBuffer += chunk;
let idx;
while ((idx = inputBuffer.indexOf('\n')) !== -1) {
const line = inputBuffer.slice(0, idx).trim();
inputBuffer = inputBuffer.slice(idx + 1);
const vals = line.split(/\s+/).map(v => parseInt(v, 10));
if (vals.length === MAX_JOINTS && vals.every(v => Number.isFinite(v))) {
for (let i = 0; i < MAX_JOINTS; i++) {
const info = fingerJointMap[i];
if (!info) continue;
let rawValue = vals[i];
// Update calibration tracking
if (calibrationEnabled) {
observedMin[i] = Math.min(observedMin[i], rawValue);
observedMax[i] = Math.max(observedMax[i], rawValue);
// Update calibration display
const ui = uiRefs[i];
if (ui && ui.calibStatus) {
if (observedMin[i] !== Infinity && observedMax[i] !== -Infinity) {
ui.calibStatus.textContent = `Range: ${observedMin[i]}-${observedMax[i]}`;
}
}
// Remap observed range to target range
if (observedMin[i] !== Infinity && observedMax[i] !== -Infinity && observedMax[i] > observedMin[i]) {
const observedRange = observedMax[i] - observedMin[i];
const targetRange = info.max - info.min;
const normalizedValue = (rawValue - observedMin[i]) / observedRange;
rawValue = info.min + (normalizedValue * targetRange);
}
}
let v = clamp(rawValue, info.min, info.max);
if (info.inverted) v = (info.min + info.max) - v;
jointValues[i] = v;
updateJointDisplay(i, v);
}
updateHandModel();
} else {
addLogMessage(`Received: ${line}`);
}
}
}
async function connectToDevice() {
try {
port = await navigator.serial.requestPort();
const baudRate = parseInt(baudRateSelect.value, 10) || 115200;
await port.open({ baudRate });
keepReading = true;
setConnectedUI(true);
statusIndicator.textContent = 'Status: Connected';
statusIndicator.className = 'status connected';
connectButton.disabled = true;
disconnectButton.disabled = false;
baudRateSelect.disabled = true;
addLogMessage(`Connected at ${baudRate} baud`);
readSerialData();
} catch (e) {
console.error('Connect error:', e);
addLogMessage(`Connection error: ${e.message}`);
}
}
async function disconnectFromDevice() {
try {
keepReading = false;
if (reader) {
try { reader.cancel(); } catch {}
}
if (port) {
await port.close();
port = null;
}
} catch (e) {
console.error('Disconnect error:', e);
addLogMessage(`Disconnection error: ${e.message}`);
} finally {
setConnectedUI(false);
statusIndicator.textContent = 'Status: Disconnected';
statusIndicator.className = 'status disconnected';
connectButton.disabled = false;
disconnectButton.disabled = true;
baudRateSelect.disabled = false;
addLogMessage('Disconnected');
}
}
// -------------------- Three.js Scene --------------------
function initThreeJS() {
scene = new THREE.Scene();
scene.background = new THREE.Color(0xf0f0f0);
camera = new THREE.PerspectiveCamera(
75,
canvasContainer.clientWidth / canvasContainer.clientHeight,
0.1, 1000
);
camera.position.set(0, 15, 15);
camera.lookAt(0, 0, 0);
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize(canvasContainer.clientWidth, canvasContainer.clientHeight);
renderer.setPixelRatio(window.devicePixelRatio);
canvasContainer.appendChild(renderer.domElement);
controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.25;
const ambientLight = new THREE.AmbientLight(0x404040);
scene.add(ambientLight);
const dir1 = new THREE.DirectionalLight(0xffffff, 0.5);
dir1.position.set(1, 1, 1);
scene.add(dir1);
const dir2 = new THREE.DirectionalLight(0xffffff, 0.3);
dir2.position.set(-1, 1, -1);
scene.add(dir2);
const gridHelper = new THREE.GridHelper(20, 20);
scene.add(gridHelper);
createHandModel();
window.addEventListener('resize', onWindowResize);
animate();
}
function createHandModel() {
const palmMaterial = new THREE.MeshPhongMaterial({ color: 0xf5c396 });
const fingerMaterial = new THREE.MeshPhongMaterial({ color: 0xf5c396 });
const jointMaterial = new THREE.MeshPhongMaterial({ color: 0xe3a977 });
const palmGeometry = new THREE.BoxGeometry(7, 1, 8);
hand.palm = new THREE.Mesh(palmGeometry, palmMaterial);
hand.palm.position.set(0, 0, 0);
hand.palm.rotation.x = Math.PI / 2; // hand vertical, palm facing forward
scene.add(hand.palm);
const fingerWidth = 1, fingerHeight = 0.8;
const fingerSegmentLengths = [3, 2, 1.5];
const thumbSegmentLengths = [2, 2, 1.5];
const fingerBasePositions = [
[ 3, 0, -2], // Thumb
[ 1.5,-0.5,-4], // Index
[ 0, -0.5,-4], // Middle
[-1.5,-0.5,-4], // Ring
[-3, -0.5,-4], // Pinky
];
const fingerBaseRot = [
{ x:0, y:-Math.PI/3, z: Math.PI/3 }, // Thumb
{ x:0, y:-Math.PI/48, z: 0 },
{ x:0, y: Math.PI/48, z: 0 },
{ x:0, y: Math.PI/32, z: 0 },
{ x:0, y: Math.PI/24, z: 0 }
];
for (let fIdx = 0; fIdx < 5; fIdx++) {
const finger = { name:['Thumb','Index','Middle','Ring','Pinky'][fIdx], segments:[], joints:[] };
const isThumb = fIdx === 0;
const segLens = isThumb ? thumbSegmentLengths : fingerSegmentLengths;
finger.group = new THREE.Group();
finger.group.position.set(...fingerBasePositions[fIdx]);
finger.group.rotation.x = fingerBaseRot[fIdx].x;
finger.group.rotation.y = fingerBaseRot[fIdx].y;
finger.group.rotation.z = fingerBaseRot[fIdx].z;
finger.group.userData.baseRot = {
x:finger.group.rotation.x,
y:finger.group.rotation.y,
z:finger.group.rotation.z
};
hand.palm.add(finger.group);
let parent = finger.group;
for (let s = 0; s < segLens.length; s++) {
const segGroup = new THREE.Group();
const jGeom = new THREE.SphereGeometry(fingerWidth * 0.6, 8, 8);
const joint = new THREE.Mesh(jGeom, jointMaterial);
segGroup.add(joint);
const segGeom = new THREE.BoxGeometry(fingerWidth, fingerHeight, segLens[s]);
const seg = new THREE.Mesh(segGeom, fingerMaterial);
seg.position.z = -segLens[s] / 2;
segGroup.add(seg);
parent.add(segGroup);
finger.segments.push(segGroup);
finger.joints.push(joint);
if (s < segLens.length - 1) {
const connector = new THREE.Group();
connector.position.z = -segLens[s];
segGroup.add(connector);
parent = connector;
}
}
hand.fingers.push(finger);
}
addFingerLabels();
addHandLabel();
}
function addFingerLabels() {
const names = ['Thumb','Index','Middle','Ring','Pinky'];
for (let i = 0; i < hand.fingers.length; i++) {
const finger = hand.fingers[i];
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
canvas.width = 128; canvas.height = 32;
ctx.fillStyle = '#ffffff'; ctx.fillRect(0,0,canvas.width,canvas.height);
ctx.font = 'bold 16px Arial';
ctx.fillStyle = '#000000';
ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
ctx.fillText(names[i], canvas.width/2, canvas.height/2);
const texture = new THREE.CanvasTexture(canvas);
const geom = new THREE.PlaneGeometry(2, 0.5);
const mat = new THREE.MeshBasicMaterial({ map:texture, transparent:true, side:THREE.DoubleSide });
const label = new THREE.Mesh(geom, mat);
label.position.set(0, -1.5, -2);
label.rotation.x = Math.PI / 2;
finger.group.add(label);
}
}
function addHandLabel() {
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
canvas.width = 256; canvas.height = 64;
ctx.fillStyle = '#ffffff'; ctx.fillRect(0,0,canvas.width,canvas.height);
ctx.font = 'bold 24px Arial';
ctx.fillStyle = '#000000';
ctx.textAlign = 'center'; ctx.textBaseline = 'middle';
ctx.fillText('RIGHT HAND (VERTICAL)', canvas.width/2, canvas.height/2);
const texture = new THREE.CanvasTexture(canvas);
const geom = new THREE.PlaneGeometry(7, 1.75);
const mat = new THREE.MeshBasicMaterial({ map:texture, transparent:true, side:THREE.DoubleSide });
const label = new THREE.Mesh(geom, mat);
label.position.set(0, -2, 0);
label.rotation.x = Math.PI / 2;
scene.add(label);
}
function updateHandModel() {
for (let i = 0; i < MAX_JOINTS; i++) {
const info = fingerJointMap[i];
if (!info) continue;
const { finger, joint, type, min, max, angleMin, angleMax } = info;
const raw = jointValues[i];
const f = hand.fingers[finger];
if (!f) continue;
const center = (min + max) / 2;
let angle = 0;
if (type.includes('ABDUCTION')) {
// symmetric around neutral
const k = clamp((raw - center) / ((max - min) / 2), -1, 1);
angle = angleMin + (k + 1) * 0.5 * (angleMax - angleMin);
const base = f.group.userData.baseRot || {x:0,y:0,z:0};
if (finger === 0 && joint === 0) {
// Thumb: abduction about Z (toward/away from palm)
f.group.rotation.z = base.z + angle;
} else {
// Other fingers: side-to-side about Y
f.group.rotation.y = base.y + angle;
}
} else if (type.includes('FLEXION')) {
const isThumb = finger === 0;
const isMCP = type === 'MCP_FLEXION';
const isPIP = type === 'PIP_FLEXION';
const positiveOnly = (isThumb && (type === 'MCP_FLEXION' || type === 'IP_FLEXION')) || (!isThumb && isPIP);
if (positiveOnly) {
const t = raw <= center ? 0 : invLerp(center, max, raw); // 0..1
angle = angleMin + t * (angleMax - angleMin); // 0..+limit
} else {
const k = clamp((raw - center) / ((max - min) / 2), -1, 1);
angle = angleMin + (k + 1) * 0.5 * (angleMax - angleMin);
}
if (isMCP) {
// MCP flexion applies to the finger base group (same as abduction)
const base = f.group.userData.baseRot || {x:0,y:0,z:0};
f.group.rotation.x = base.x + angle;
} else if (f.segments[joint]) {
// PIP/DIP/IP flexion applies to individual segments
f.segments[joint].rotation.x = angle;
}
}
}
}
// -------------------- Render Loop --------------------
function onWindowResize() {
camera.aspect = canvasContainer.clientWidth / canvasContainer.clientHeight;
camera.updateProjectionMatrix();
renderer.setSize(canvasContainer.clientWidth, canvasContainer.clientHeight);
}
function animate() {
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
}
// -------------------- Misc UI --------------------
function addLogMessage(msg) {
const el = document.createElement('div');
el.textContent = msg;
logContainer.appendChild(el);
logContainer.scrollTop = logContainer.scrollHeight;
while (logContainer.children.length > 100) {
logContainer.removeChild(logContainer.firstChild);
}
}
// Camera view controls
frontViewBtn?.addEventListener('click', () => { camera.position.set(0, 0, 20); camera.lookAt(0,0,0); controls.update(); });
sideViewBtn?.addEventListener('click', () => { camera.position.set(20, 0, 0); camera.lookAt(0,0,0); controls.update(); });
topViewBtn?.addEventListener('click', () => { camera.position.set(0, 20, 0); camera.lookAt(0,0,0); controls.update(); });
resetViewBtn?.addEventListener('click', () => { camera.position.set(10,10,10); camera.lookAt(0,0,0); controls.update(); });
// Serial connect buttons
connectButton?.addEventListener('click', connectToDevice);
disconnectButton?.addEventListener('click', disconnectFromDevice);
// Web Serial support check
if (!navigator.serial) {
statusIndicator.textContent = 'Status: Web Serial API not supported in this browser';
connectButton.disabled = true;
addLogMessage('ERROR: Web Serial API is not supported in this browser. Try Chrome or Edge.');
}
// -------------------- Boot --------------------
initThreeJS();
initializeJointElements();
// -------------------- Styles (inline) --------------------
const styleElement = document.createElement('style');
styleElement.textContent = `
.joint-info { border-bottom: 1px solid #eee; padding: 8px 0; }
.joint-name { font-weight: 600; margin-bottom: 4px; }
.joint-value { font-size: 12px; color: #333; margin-bottom: 4px; }
.bar-container { width: 100%; height: 8px; background: #ddd; border-radius: 4px; overflow: hidden; }
.bar { height: 100%; width: 0%; background: #4caf50; }
.joint-slider { width: 100%; margin: 6px 0; }
.invert-toggle { display: inline-flex; align-items: center; gap: 6px; margin-top: 4px; font-size: 12px; color: #555; }
.limits-row { display: flex; align-items: center; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.limit-label { font-size: 11px; color: #666; }
.limit-num { width: 60px; }
.calib-row { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.calib-btn { padding: 2px 6px; font-size: 11px; background: #f44336; color: white; border: none; border-radius: 3px; cursor: pointer; }
.calib-btn:hover { background: #d32f2f; }
.calib-status { font-size: 11px; color: #666; }
.status.connected { color: #0a0; }
.status.disconnected { color: #a00; }
`;
document.head.appendChild(styleElement);