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HTML
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class="nav-list-item"><a href="/Meshtastic-Android/main/en/developer/documentation-style.html" class="nav-list-link">Documentation Style</a></li></ul></li></ul> </nav> <div class="d-md-block d-sm-none"> <div class="site-footer"> This site uses <a href="https://github.com/just-the-docs/just-the-docs">Just the Docs</a>, a documentation theme for Jekyll. </div> </div> </header> <div class="main" id="top"> <div id="main-header" class="main-header"> <div class="search" role="search"> <div class="search-input-wrap"> <input type="text" id="search-input" class="search-input" tabindex="0" placeholder="Search Meshtastic Android" autocomplete="off"> <label for="search-input" class="search-label"> <span class="sr-only">Search Meshtastic Android</span> <svg viewBox="0 0 24 24" class="search-icon" aria-hidden="true"><use xlink:href="#svg-search"></use></svg> </label> </div> <div id="search-results" class="search-results"></div> </div> <div class="theme-toggle-wrap"> <button class="theme-toggle" id="theme-toggle" aria-label="Toggle dark mode" title="Toggle light/dark theme" onclick="toggleMeshtasticTheme()"> <span id="theme-icon">🌙</span> <span id="theme-label">Dark</span> </button> <details class="language-switcher version-switcher" id="version-switcher" aria-label="Documentation version" hidden> <summary class="language-switcher-btn" title="Switch documentation version"> 🏷️ <span id="version-current"></span> </summary> <ul class="language-switcher-list" id="version-switcher-list"></ul> </details> <script> (function() { var baseurl = '/Meshtastic-Android/main'; var root = baseurl; var channel = 'latest'; // /main/, /vX.Y.Z/ or a prerelease snapshot like /v2.8.0-open.1/. var match = baseurl.match(/^(.*)\/(main|v\d+\.\d+\.\d+(?:-(?:open|closed)\.\d+)?)$/); if (match) { root = match[1]; channel = match[2]; } fetch(root + '/versions.json') .then(function(res) { return res.ok ? res.json() : Promise.reject(); }) .then(function(data) { var switcher = 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On Android the <strong>Advanced</strong> section appears only for a locally connected node, never over remote admin, and stays grayed out until the app has finished reading the node’s configuration. On a managed device its entries are disabled, except <strong>Debug Panel</strong>, which reads app-local logs and stays available. On desktop, Local Mesh Discovery has its own entry on the Settings screen, with no such gate.</p> <blockquote> <p>ℹ️ <strong>Note:</strong> Discovery temporarily changes your node’s LoRa settings while it scans, then restores your original configuration when it finishes.</p> </blockquote> <h3 id="setting-up-a-scan"> <a href="#setting-up-a-scan" class="anchor-heading" aria-labelledby="setting-up-a-scan"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Setting up a scan </h3> <p>開始する前に、次のコントロールを設定します:</p> <div class="table-wrapper"><table> <thead> <tr> <th>コントロール</th> <th>説明</th> </tr> </thead> <tbody> <tr> <td><strong>LoRa プリセットの選択</strong></td> <td>スキャンするプリセットを 1 つ以上選択します。探索は、選択した各プリセットに順番に滞在します。</td> </tr> <tr> <td><strong>滞在時間</strong></td> <td>各プリセットで受信する時間。 1、5、15、30、45、60、90、120、180 分から選択します。滞在時間を長くすると、より多くのパケットを収集してより明確な状況が分かりますが、時間もかかります。</td> </tr> <tr> <td><strong>画面をスリープさせない</strong></td> <td>Keeps the display on for the scan. The scan itself holds a CPU wake lock for its whole run and posts a <strong>Scanning LoRa presets…</strong> notification, so it keeps collecting with the screen off or the app in the background.</td> </tr> </tbody> </table></div> <p>The <strong>Start Scan</strong> button stays disabled — with an explanation of why — until the scan can run. 無効になる主な理由:</p> <ul> <li>The node is <strong>not connected</strong>.</li> <li>スキャンする<strong>プリセットが選択されていない</strong>。</li> <li>選択したプリセットが、ハードウェアが対応していない <strong>2.4 GHz</strong> を使用している。</li> </ul> <h3 id="live-progress"> <a href="#live-progress" class="anchor-heading" aria-labelledby="live-progress"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Live progress </h3> <p>スキャンの実行中、探索は現在の段階を表示します:</p> <div class="table-wrapper"><table> <thead> <tr> <th>段階</th> <th>実行中の内容</th> </tr> </thead> <tbody> <tr> <td><strong>Preparing scan</strong></td> <td>現在の構成を保存し、スキャンの準備をしています。</td> </tr> <tr> <td><strong><preset> に切り替え中</strong></td> <td>Switching the node to the next preset to test.</td> </tr> <tr> <td><strong>Reconnecting on <preset></strong></td> <td>プリセット変更後に接続を再確立しています。</td> </tr> <tr> <td><strong>Dwelling on <preset></strong></td> <td>現在のプリセットで受信してパケットを収集しており、次のステップまでのカウントダウンが表示されます。</td> </tr> <tr> <td><strong>Analyzing results</strong></td> <td>収集したパケットを処理し、プリセットをランク付けしています。</td> </tr> <tr> <td><strong>Restoring home preset</strong></td> <td>元の LoRa 構成に戻しています。</td> </tr> <tr> <td><strong>Cancelling scan</strong></td> <td>You tapped <strong>Stop Scan</strong>; partial results are saved before the original preset is restored.</td> </tr> <tr> <td><strong>Scan failed: <reason></strong></td> <td>The scan could not continue — most often the node didn’t come back within a minute of a preset change. The results collected so far are saved, and the original preset is restored automatically.</td> </tr> </tbody> </table></div> <p><img src="../../assets/screenshots/discovery_dwell_progress.png" alt="現在のプリセットの残り時間を示す滞在のカウントダウン" /></p> <p>If a scan is interrupted — the app is closed, or the node goes away — the app restores your original preset the next time it reconnects to that node, and tells you it has done so. Reconnect the same node to let that happen; until you do, the node stays on whichever preset the scan left it on.</p> <h3 id="reading-the-results"> <a href="#reading-the-results" class="anchor-heading" aria-labelledby="reading-the-results"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Reading the results </h3> <p>スキャンが完了すると、探索はテストした各プリセットのプリセット別の結果カードと、全体の概要を表示します。</p> <p><img src="../../assets/screenshots/discovery_preset_result.png" alt="ランキングと収集したメトリクスを含むプリセット別の結果カード" /></p> <p>メトリクスには次が含まれます:</p> <div class="table-wrapper"><table> <thead> <tr> <th>メートル法</th> <th>分かること</th> </tr> </thead> <tbody> <tr> <td>RF の健全性</td> <td>そのプリセットにおける無線環境の総合的な品質。</td> </tr> <tr> <td>チャンネル利用率</td> <td>滞在中に電波がどれだけ混雑していたか。</td> </tr> <tr> <td>電波利用時間</td> <td>観測された送信時間。</td> </tr> <tr> <td>直接受信と中継ノード</td> <td>直接受信できたメッシュノードと、中継経由のノードの数。</td> </tr> <tr> <td>不良/重複パケット</td> <td>破損したパケットと繰り返されたパケットの数で、輻輳や干渉を示します。</td> </tr> </tbody> </table></div> <p>結果から利用できる追加機能:</p> <ul> <li><strong>スキャン履歴</strong>:後で見直せる保存済みのセッション。過去のスキャンを表示または削除できます。</li> <li><strong>探索マップ</strong>:スキャン中に見つかったノードのマップ。</li> <li><strong>レポートのエクスポート</strong>:Android では PDF として、他のプラットフォームではテキストとしてレポートをエクスポートします。</li> </ul> <blockquote> <p>💡 <strong>Tip:</strong> On <strong>Google Play</strong> builds, Discovery can generate an on-device AI summary (Gemini Nano) of your results. F-Droid builds always use the algorithmic summary — the proprietary ML Kit dependency is deliberately excluded from that flavor — so you get a readable interpretation of the scan either way.</p> </blockquote> <h2 id="メッシュビーコン"> <a href="#メッシュビーコン" class="anchor-heading" aria-labelledby="メッシュビーコン"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> メッシュビーコン </h2> <p>メッシュビーコンを使うと、ノードが他のノードを自分のメッシュに招待できます。 A beaconing node periodically broadcasts an invitation — optionally advertising a channel, region, and modem preset — that nearby nodes can hear even before they share a configuration.</p> <p>Configure it under <strong>Settings → Module configuration → Mesh Beacon</strong>. The entry appears only on nodes running firmware 2.8.0 or newer. A read-only <strong>Region</strong> row at the top of the screen shows the region the beacon advertises: that region, and the preset, are always the ones the node itself uses, so a beacon can’t invite anyone onto settings your node isn’t running.</p> <ul> <li><strong>ビーコンを受信</strong>:他のノードがブロードキャストする招待を受け取ります。</li> <li><strong>Broadcast a beacon</strong> — periodically advertise this mesh to nearby nodes, with an optional <strong>Beacon message</strong> of up to 100 bytes, a <strong>Broadcast interval</strong> picked from fixed intervals between 1 hour and 72 hours, and an <strong>Offered channel</strong> chosen from your node’s own channels. The offered channel is required, and defaults to your primary channel. Over remote admin the picker offers the primary channel only.</li> <li><strong>Broadcast targets</strong> — where the beacon actually transmits. The list always holds at least one row: the first is the beacon’s own transmission, not an extra. Each row picks a <strong>Channel</strong> and a <strong>Transmit preset</strong>. <strong>Add target</strong> appends a row, and <strong>Remove target</strong> deletes one — removing the last row replaces it with a fresh default rather than emptying the list.</li> </ul> <p>Two conditions block beacon setup:</p> <ul> <li><strong>The node has no region set.</strong> The screen shows nothing but <em>Set your node’s region before setting up a beacon.</em> Set the region on <strong>Settings → LoRa</strong> first.</li> <li><strong>The node uses custom LoRa settings.</strong> A beacon advertises a modem preset for others to join, so a node with <strong>Use Preset</strong> turned off has no standard preset to offer. In that state <strong>Broadcast a beacon</strong> can be turned off but not on, and the broadcast settings are read-only. Listening for beacons is unaffected.</li> </ul> <p>受信した招待は、探索画面に「<strong>メッシュへの招待</strong>」カードとして表示されます。各カードには、送信者のメッセージと、提示されたチャンネル・リージョン・プリセット・信号品質が表示され、次の操作ができます:</p> <ul> <li><strong>Join</strong> — switch to the offered channel and preset (retunes the node and reboots). 提示内容が現在の周波数スロットと一致する場合は、再起動なしで追加できる「<strong>チャンネルを追加</strong>」の操作が表示されます。</li> <li><strong>探索</strong>:提示されたプリセットで探索スキャンを開始し、参加する前にそのメッシュを調べられます(ビーコンがプリセットを提示している場合のみ表示)。</li> <li><strong>閉じる</strong>:招待を無視します。</li> </ul> <p>ビーコンが告知したチャンネルは、スキャン設定にも「<strong>ビーコンのチャンネル</strong>」として表示されます。選択すると、スキャン対象に含められます。</p> <p>An invitation to a mesh your node is already on is suppressed: no card, no notification, and no <strong>Beacon channels</strong> entry. A channel counts as one you already have only when both its name and its key match a channel on your node — the same name with a different key is a different mesh, so that invitation still reaches you.</p> <h2 id="manual-exploration"> <a href="#manual-exploration" class="anchor-heading" aria-labelledby="manual-exploration"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Manual exploration </h2> <p>The following tools are available at any time from the node list and node detail screens. 完全なスキャンと併用して、またはその代わりに、特定の経路を調べてトポロジーの全体像を組み立てるのに使えます。</p> <h3 id="ルート追跡"> <a href="#ルート追跡" class="anchor-heading" aria-labelledby="ルート追跡"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> ルート追跡 </h3> <p>ルート追跡は、メッセージが自分のノードから、メッシュ上の他の任意のノードへ通る正確な経路を明らかにします。接続の問題をデバッグするのに、最も役立つツールです。</p> <h4 id="ルート追跡を実行する"> <a href="#ルート追跡を実行する" class="anchor-heading" aria-labelledby="ルート追跡を実行する"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> ルート追跡を実行する </h4> <ol> <li>「<strong>ノード</strong>」に移動し、追跡したいノードをタップします。</li> <li>On the node detail screen, find <strong>Traceroute</strong> in the <strong>Telemetry</strong> section and tap its request button. Once a result arrives, a second button on the same row opens the traceroute log, where each hop is listed with its signal quality.</li> </ol> <h4 id="reading-the-results-1"> <a href="#reading-the-results-1" class="anchor-heading" aria-labelledby="reading-the-results-1"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Reading the results </h4> <p>ルート追跡の結果は次のように表示されます:</p> <div class="language-text highlighter-rouge"><div class="highlight"><pre class="highlight"><code>Route traced toward destination:
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||
|
||
■ Your Node (YOUR)
|
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⇊ 8.5 dB
|
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■ Relay Node (RLAY)
|
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⇊ -8.75 dB
|
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■ Target Node (TGT1)
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||
</code></pre></div></div> <p>Each <code class="language-plaintext highlighter-rouge">⇊</code> line between two nodes is one relay hop, and the SNR on that line is the quality of that segment alone. The app colors it against the demodulation floor of the preset in use, not a fixed number: green above the floor, yellow within 5.5 dB below it, orange within 7.5 dB, and red beyond that. The floor is −7.5 dB on Short Fast and improves 2.5 dB per spreading-factor step, so it is −17.5 dB on Long Fast — the same SNR reads differently on different presets. See <a href="signal-meter">Signal Meter</a>. A request that also gets a reply adds a second block under <strong>Route traced back to us:</strong>.</p> <div class="table-wrapper"><table> <thead> <tr> <th>確認すべき点</th> <th>意味</th> </tr> </thead> <tbody> <tr> <td>All hops show Good SNR (green)</td> <td>健全な経路。メッセージが確実に流れます</td> </tr> <tr> <td>One hop shows a poor SNR (orange or red)</td> <td>弱いリンク。この中継区間は脆弱です</td> </tr> <tr> <td>ホップ数が多い(4 以上)</td> <td>長い経路。短くするためにノードの再配置を検討してください</td> </tr> <tr> <td>再試行で経路が変わる</td> <td>メッシュが適応しています。複数の経路が存在します(これは良いことです!)</td> </tr> </tbody> </table></div> <blockquote> <p>💡 <strong>ヒント:</strong> ルート追跡を数分間かけて何度か実行してください。経路が変わる場合、メッシュには冗長な経路があり、よくつながったネットワークの兆候です。</p> </blockquote> <h4 id="ルート追跡によるトラブルシューティング"> <a href="#ルート追跡によるトラブルシューティング" class="anchor-heading" aria-labelledby="ルート追跡によるトラブルシューティング"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> ルート追跡によるトラブルシューティング </h4> <ul> <li><strong>No Response</strong> — The traceroute got nothing back. The target node may be offline, out of range, or on a different channel. 両方のノードが、同じ暗号化鍵を持つチャンネルを少なくとも 1 つ共有しているか確認してください。</li> <li><strong>ルート追跡がタイムアウトする</strong>:経路が長すぎる(ホップ数上限を超える)か、中継ノードが混雑している可能性があります。 Try increasing the hop limit in <strong>Settings → LoRa</strong>.</li> <li><strong>Cannot show traceroute map because the start or destination node has no position information</strong> — The path was traced, but one end has never shared a position.</li> <li><strong>非対称な経路</strong>:A→B のルート追跡は、B→A とは異なる経路を通ることがあります。 This is normal — radio propagation isn’t always symmetric.</li> </ul> <h3 id="隣接ノード情報"> <a href="#隣接ノード情報" class="anchor-heading" aria-labelledby="隣接ノード情報"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> 隣接ノード情報 </h3> <p>隣接ノード情報モジュールを使うと、各ノードが<strong>直接受信できる</strong>(シングルホップの)ノードのリストをブロードキャストできます。複数のノードが隣接ノードのリストを共有すると、メッシュ全体のトポロジーマップを組み立てられます。</p> <h4 id="隣接ノード情報を有効にする"> <a href="#隣接ノード情報を有効にする" class="anchor-heading" aria-labelledby="隣接ノード情報を有効にする"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> 隣接ノード情報を有効にする </h4> <ol> <li>Navigate to <strong>Settings → Module configuration → Neighbor Info</strong>.</li> <li>モジュールを有効にします。</li> <li>Set <strong>Update interval (seconds)</strong>. The app accepts whatever you type; the firmware enforces its own minimum and resets a value below it.</li> <li>Turn on <strong>Transmit over LoRa</strong>. Without it, your neighbor list goes only to MQTT and to this app, never over the air.</li> </ol> <p>Once enabled and transmitting over LoRa, your node periodically broadcasts its neighbor list. 隣接ノード情報を有効にしている他のノードも、同じことを行います。</p> <h4 id="viewing-neighbor-data"> <a href="#viewing-neighbor-data" class="anchor-heading" aria-labelledby="viewing-neighbor-data"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Viewing neighbor data </h4> <ul> <li>Open a node’s detail screen and find <strong>Neighbor Info</strong> in the <strong>Telemetry</strong> section. The request button asks the node for its current neighbor list; once the app has received one, a second button on the same row opens the log of everything that node has reported. The row appears only on nodes that can answer a neighbor request, or that have already reported neighbors.</li> <li>各隣接ノードの項目には、直接受信したノードとその信号品質が表示されます。</li> <li>複数のノードの隣接ノードデータを組み合わせて、メッシュ全体のトポロジーを把握します。</li> </ul> <blockquote> <p>ℹ️ <strong>Note:</strong> Neighbor Info increases airtime usage because every enabled node periodically broadcasts its neighbor list. The firmware doesn’t accept an interval shorter than 14400 seconds (4 hours) for this reason; on busy meshes, leave it at the 21600-second default or raise it further.</p> </blockquote> <h3 id="node-list-as-a-discovery-tool"> <a href="#node-list-as-a-discovery-tool" class="anchor-heading" aria-labelledby="node-list-as-a-discovery-tool"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Node list as a discovery tool </h3> <p>ノードリスト自体も、絞り込みと並べ替えの機能を効果的に使えば、強力な探索ツールになります。</p> <h4 id="finding-new-nodes"> <a href="#finding-new-nodes" class="anchor-heading" aria-labelledby="finding-new-nodes"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Finding new nodes </h4> <ul> <li>「<strong>最後の通信</strong>」で並べ替えると、最近アクティブだったノードが先頭に表示されます。</li> <li>Enable <strong>Include unknown</strong> to see nodes that have appeared on the mesh but haven’t sent user info yet — these are often newly powered-on nodes.</li> </ul> <h4 id="assessing-connectivity"> <a href="#assessing-connectivity" class="anchor-heading" aria-labelledby="assessing-connectivity"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Assessing connectivity </h4> <ul> <li>「<strong>ホップ数</strong>」で並べ替えると、直接到達できるノード(0 ホップ)と中継されるノードが分かります。</li> <li>「<strong>距離</strong>」で並べ替えると、近くのノードを見つけて、到達できるか確認できます。</li> <li>Use <strong>Exclude MQTT</strong> to focus on nodes reachable over LoRa (not via internet bridge).</li> </ul> <h4 id="infrastructure-audit"> <a href="#infrastructure-audit" class="anchor-heading" aria-labelledby="infrastructure-audit"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Infrastructure audit </h4> <ul> <li>「<strong>インフラを除外</strong>」を無効にすると、ルーター、ルーター・レイト、クライアント・ベースのノードが表示されます。</li> <li>信号品質と最後の通信時刻を確認して、インフラのノードが健全であることを確かめます。</li> </ul> <p>絞り込みと並べ替えのオプションの詳細については、<a href="nodes">ノード</a> を参照してください。</p> <h2 id="tips-for-mesh-exploration"> <a href="#tips-for-mesh-exploration" class="anchor-heading" aria-labelledby="tips-for-mesh-exploration"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> Tips for Mesh exploration </h2> <ul> <li><strong>まずルート追跡から</strong>:特定の経路について、すぐに役立つ情報が得られます。</li> <li><strong>主要なノードで隣接ノード情報を有効に</strong>:特にルーターやリピーターで有効にして、バックボーンの全体像を組み立てます。</li> <li><strong>マップを確認</strong>:<a href="map-and-waypoints">マップ</a> 上のノードの位置と信号データを組み合わせると、なぜあるリンクは強く、別のリンクは弱いのかが分かります。</li> <li><strong>信号を時系列で比較</strong>:<a href="signal-meter">信号メーター</a> のガイドを使って、SNR と RSSI の値を正しく解釈します。</li> </ul> <h2 id="関連トピック"> <a href="#関連トピック" class="anchor-heading" aria-labelledby="関連トピック"><svg viewBox="0 0 16 16" aria-hidden="true"><use xlink:href="#svg-link"></use></svg></a> 関連トピック </h2> <ul> <li><a href="nodes">Nodes</a> — the node list these scans populate</li> <li><a href="map-and-waypoints">Map & Waypoints</a> — see discovered nodes geographically</li> <li><a href="signal-meter">Signal Meter</a> — interpret the SNR and RSSI a scan reports</li> <li><a href="settings-module-admin">Settings — Modules & Admin</a> — configure the Mesh Beacon and Neighbor Info modules</li> <li><a href="messages-and-channels">Messages & Channels</a> — join a mesh you found and start talking</li> </ul> </div> <style> .locale-page-banner { background: rgba(103, 234, 148, 0.1); border: 1px solid rgba(103, 234, 148, 0.3); border-radius: 12px; padding: 10px 16px; margin-bottom: 1.5rem; font-size: 0.85rem; } .locale-notice a { margin-left: 12px; font-weight: 500; } </style> </main> <hr> <footer> <footer class="site-footer"> Copyright © 2026 Meshtastic LLC. 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