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ROS Support for EV3Dev-Java

Introduction

This library provide the support to integrate Sensors & Actuators on ROS.

ROS is Distributed system which provides:

  • Topics
  • Services
  • Actions

The library only cover the first element, Topics.

Topics

Using this library, the user could publish & subscribe information to ROS for the following topics:

Topics Published

  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)

Topics Subscribed

  • cmd_vel (geometry_msgs/Twist)

Applications

Teleoperation

Using information provided by the topic cmd_vel it could be possible to teleoperate the robot using ROS technologies.

SLAM

Publishing information about the robot and using other ROS Components like Google Cartographer, the robot could use map information provided by this component and improve the local navigation capabilities

Current status

At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.

To Start a ROS Session:

source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About

A library to interact with ROS for Mindstorms Bricks

Topics

ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam

Resources

Readme
MIT license
Activity
Custom properties

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0 stars

Watchers

1 watching

Forks

0 forks
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
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ROS Support for EV3Dev-Java
Introduction
This library provide the support to integrate Sensors & Actuators on ROS.
ROS is Distributed system which provides:
  • Topics
  • Services
  • Actions
The library only cover the first element, Topics.
Topics
Using this library, the user could publish & subscribe information to ROS for the following topics:
Topics Published
  • battery (std_msgs.Float32)
  • scan (sensor_msgs.LaserScan)
Topics Subscribed
  • cmd_vel (geometry_msgs/Twist)
Applications
Teleoperation
Using information provided by the topic cmd_vel it could be possible to teleoperate the robot
using ROS technologies.
SLAM
Publishing information about the robot and using other ROS Components
like Google Cartographer, the robot could use map information provided by this component
and improve the local navigation capabilities
Current status
At the moment, the library publish messages for the sensor RPLIDAR A2 on a ROS Instance.
To Start a ROS Session:
source /opt/ros/kinetic/setup.bash
cd catkin_ws
source install_isolated/setup.bash
roslaunch rosbridge_server rosbridge_websocket.launch

About
A library to interact with ROS for Mindstorms Bricks
Topics
ev3devjavalocalizationmappingnavigationroboticsrobotics-librariesrosros-noderosbridgerosbridge-suiterosjavaslam
Resources
Readme
MIT license
Activity
Custom properties
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors