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Add color your leds example
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‎examples/color-your-leds/README.md‎

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# Color your LEDs

‎examples/color-your-leds/app.yaml‎

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name: Color your LEDs
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icon: 🎨
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description: Control the color of your LEDs from a web interface.
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bricks:
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- arduino:web_ui

‎examples/color-your-leds/assets/app.js‎

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// SPDX-FileCopyrightText: Copyright (C) 2025 ARDUINO SA <http://www.arduino.cc>
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//
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// SPDX-License-Identifier: MPL-2.0
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// SPDX-FileCopyrightText: Copyright (C) 2025 ARDUINO SA <http://www.arduino.cc>
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//
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// SPDX-License-Identifier: MPL-2.0
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const led1ColorPicker = document.getElementById('led1-color');
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const led2ColorPicker = document.getElementById('led2-color');
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const led3ColorPicker = document.getElementById('led3-color');
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const led4ColorPicker = document.getElementById('led4-color');
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const led1HexDisplay = document.getElementById('led1-hex');
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const led2HexDisplay = document.getElementById('led2-hex');
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const led3HexDisplay = document.getElementById('led3-hex');
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const led4HexDisplay = document.getElementById('led4-hex');
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let errorContainer;
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/*
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* Socket initialization. We need it to communicate with the server
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*/
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const socket = io(`http://${window.location.host}`); // Initialize socket.io connection
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// Start the application
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document.addEventListener('DOMContentLoaded', () => {
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errorContainer = document.getElementById('error-container');
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initSocketIO();
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// Add event listeners
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led1ColorPicker.addEventListener('input', function(e) {
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led1HexDisplay.textContent = e.target.value;
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const rgb = hexToRgb(e.target.value);
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socket.emit('set_color', { led: 1, color: rgb });
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console.log(`LED 1 - R: ${rgb.r}, G: ${rgb.g}, B: ${rgb.b}`);
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});
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led2ColorPicker.addEventListener('input', function(e) {
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led2HexDisplay.textContent = e.target.value;
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const rgb = hexToRgb(e.target.value);
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socket.emit('set_color', { led: 2, color: rgb });
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console.log(`LED 2 - R: ${rgb.r}, G: ${rgb.g}, B: ${rgb.b}`);
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});
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led3ColorPicker.addEventListener('input', function(e) {
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led3HexDisplay.textContent = e.target.value;
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const rgb = hexToRgb(e.target.value);
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socket.emit('set_color', { led: 3, color: rgb });
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console.log(`LED 3 - R: ${rgb.r}, G: ${rgb.g}, B: ${rgb.b}`);
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});
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led4ColorPicker.addEventListener('input', function(e) {
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led4HexDisplay.textContent = e.target.value;
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const rgb = hexToRgb(e.target.value);
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socket.emit('set_color', { led: 4, color: rgb });
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console.log(`LED 4 - R: ${rgb.r}, G: ${rgb.g}, B: ${rgb.b}`);
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});
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});
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// Function to convert hex to RGB
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function hexToRgb(hex) {
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const r = parseInt(hex.slice(1, 3), 16);
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const g = parseInt(hex.slice(3, 5), 16);
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const b = parseInt(hex.slice(5, 7), 16);
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return { r, g, b };
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}
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function initSocketIO() {
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socket.on('led_status_update', (message) => {
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updateLedStatus(message);
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});
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socket.on('disconnect', () => {
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if (errorContainer) {
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errorContainer.textContent = 'Connection to the board lost. Please check the connection.';
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errorContainer.style.display = 'block';
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}
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});
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}

‎examples/color-your-leds/assets/fonts/Open Sans/OFL.txt‎

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Copyright 2020 The Open Sans Project Authors (https://github.com/googlefonts/opensans)
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This Font Software is licensed under the SIL Open Font License, Version 1.1.
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This license is copied below, and is also available with a FAQ at:
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https://openfontlicense.org
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-----------------------------------------------------------
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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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-----------------------------------------------------------
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PREAMBLE
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The goals of the Open Font License (OFL) are to stimulate worldwide
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development of collaborative font projects, to support the font creation
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efforts of academic and linguistic communities, and to provide a free and
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open framework in which fonts may be shared and improved in partnership
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with others.
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The OFL allows the licensed fonts to be used, studied, modified and
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redistributed freely as long as they are not sold by themselves. The
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fonts, including any derivative works, can be bundled, embedded,
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redistributed and/or sold with any software provided that any reserved
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names are not used by derivative works. The fonts and derivatives,
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however, cannot be released under any other type of license. The
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requirement for fonts to remain under this license does not apply
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to any document created using the fonts or their derivatives.
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DEFINITIONS
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"Font Software" refers to the set of files released by the Copyright
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Holder(s) under this license and clearly marked as such. This may
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include source files, build scripts and documentation.
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33+
"Reserved Font Name" refers to any names specified as such after the
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copyright statement(s).
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36+
"Original Version" refers to the collection of Font Software components as
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distributed by the Copyright Holder(s).
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"Modified Version" refers to any derivative made by adding to, deleting,
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or substituting -- in part or in whole -- any of the components of the
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Original Version, by changing formats or by porting the Font Software to a
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new environment.
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"Author" refers to any designer, engineer, programmer, technical
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writer or other person who contributed to the Font Software.
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PERMISSION & CONDITIONS
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of the Font Software, to use, study, copy, merge, embed, modify,
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redistribute, and sell modified and unmodified copies of the Font
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Software, subject to the following conditions:
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1) Neither the Font Software nor any of its individual components,
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in Original or Modified Versions, may be sold by itself.
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2) Original or Modified Versions of the Font Software may be bundled,
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redistributed and/or sold with any software, provided that each copy
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contains the above copyright notice and this license. These can be
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included either as stand-alone text files, human-readable headers or
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in the appropriate machine-readable metadata fields within text or
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binary files as long as those fields can be easily viewed by the user.
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3) No Modified Version of the Font Software may use the Reserved Font
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Name(s) unless explicit written permission is granted by the corresponding
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Copyright Holder. This restriction only applies to the primary font name as
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presented to the users.
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4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
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Software shall not be used to promote, endorse or advertise any
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Modified Version, except to acknowledge the contribution(s) of the
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Copyright Holder(s) and the Author(s) or with their explicit written
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permission.
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5) The Font Software, modified or unmodified, in part or in whole,
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must be distributed entirely under this license, and must not be
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distributed under any other license. The requirement for fonts to
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remain under this license does not apply to any document created
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using the Font Software.
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TERMINATION
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This license becomes null and void if any of the above conditions are
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not met.
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DISCLAIMER
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THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
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DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
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OTHER DEALINGS IN THE FONT SOFTWARE.

‎examples/color-your-leds/assets/fonts/Open Sans/OpenSans-VariableFont_wdth,wght.ttf‎

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‎examples/color-your-leds/assets/fonts/Roboto/OFL.txt‎

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This Font Software is licensed under the SIL Open Font License, Version 1.1.
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This license is copied below, and is also available with a FAQ at:
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https://openfontlicense.org
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-----------------------------------------------------------
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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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-----------------------------------------------------------
9+
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PREAMBLE
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The goals of the Open Font License (OFL) are to stimulate worldwide
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development of collaborative font projects, to support the font creation
13+
efforts of academic and linguistic communities, and to provide a free and
14+
open framework in which fonts may be shared and improved in partnership
15+
with others.
16+
17+
The OFL allows the licensed fonts to be used, studied, modified and
18+
redistributed freely as long as they are not sold by themselves. The
19+
fonts, including any derivative works, can be bundled, embedded,
20+
redistributed and/or sold with any software provided that any reserved
21+
names are not used by derivative works. The fonts and derivatives,
22+
however, cannot be released under any other type of license. The
23+
requirement for fonts to remain under this license does not apply
24+
to any document created using the fonts or their derivatives.
25+
26+
DEFINITIONS
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"Font Software" refers to the set of files released by the Copyright
28+
Holder(s) under this license and clearly marked as such. This may
29+
include source files, build scripts and documentation.
30+
31+
"Reserved Font Name" refers to any names specified as such after the
32+
copyright statement(s).
33+
34+
"Original Version" refers to the collection of Font Software components as
35+
distributed by the Copyright Holder(s).
36+
37+
"Modified Version" refers to any derivative made by adding to, deleting,
38+
or substituting -- in part or in whole -- any of the components of the
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Original Version, by changing formats or by porting the Font Software to a
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new environment.
41+
42+
"Author" refers to any designer, engineer, programmer, technical
43+
writer or other person who contributed to the Font Software.
44+
45+
PERMISSION & CONDITIONS
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Permission is hereby granted, free of charge, to any person obtaining
47+
a copy of the Font Software, to use, study, copy, merge, embed, modify,
48+
redistribute, and sell modified and unmodified copies of the Font
49+
Software, subject to the following conditions:
50+
51+
1) Neither the Font Software nor any of its individual components,
52+
in Original or Modified Versions, may be sold by itself.
53+
54+
2) Original or Modified Versions of the Font Software may be bundled,
55+
redistributed and/or sold with any software, provided that each copy
56+
contains the above copyright notice and this license. These can be
57+
included either as stand-alone text files, human-readable headers or
58+
in the appropriate machine-readable metadata fields within text or
59+
binary files as long as those fields can be easily viewed by the user.
60+
61+
3) No Modified Version of the Font Software may use the Reserved Font
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Name(s) unless explicit written permission is granted by the corresponding
63+
Copyright Holder. This restriction only applies to the primary font name as
64+
presented to the users.
65+
66+
4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
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Software shall not be used to promote, endorse or advertise any
68+
Modified Version, except to acknowledge the contribution(s) of the
69+
Copyright Holder(s) and the Author(s) or with their explicit written
70+
permission.
71+
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5) The Font Software, modified or unmodified, in part or in whole,
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must be distributed entirely under this license, and must not be
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distributed under any other license. The requirement for fonts to
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remain under this license does not apply to any document created
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using the Font Software.
77+
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TERMINATION
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This license becomes null and void if any of the above conditions are
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not met.
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DISCLAIMER
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THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
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DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
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OTHER DEALINGS IN THE FONT SOFTWARE.

‎examples/color-your-leds/assets/fonts/Roboto/RobotoMono-VariableFont_wght.ttf‎

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‎examples/color-your-leds/assets/fonts/fonts.css‎

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/*
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* SPDX-FileCopyrightText: Copyright (C) 2025 ARDUINO SA <http://www.arduino.cc>
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*
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* SPDX-License-Identifier: MPL-2.0
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*/
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@font-face {
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font-family: 'Roboto Mono';
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font-style: normal;
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font-display: swap;
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src: url('Roboto/RobotoMono-VariableFont_wght.ttf') format('truetype');
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}
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@font-face {
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font-family: 'Open Sans';
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font-style: normal;
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font-display: swap;
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src: url('Open Sans/OpenSans-VariableFont_wdth,wght.ttf') format('truetype');
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}

‎examples/color-your-leds/assets/img/logo.svg‎

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‎examples/color-your-leds/assets/img/logo.svg.license‎

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SPDX-FileCopyrightText: Copyright (C) 2025 ARDUINO SA <http://www.arduino.cc>
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SPDX-License-Identifier: MPL-2.0

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