HopRadar: live MeshCore map, analyzer & radar

HopRadar is a free web app for MeshCore LoRa mesh networks. Connect your own MeshCore node via Bluetooth (BLE) or USB serial and see your mesh live on a map: contacts and repeaters, hop-by-hop traces with SNR measurement, radio paths, overheard packets (RX radar), line-of-sight coverage and elevation profiles with Fresnel zone. No installation, no account, and your data stays in your browser.

Unlike public MeshCore node maps, which show what was reported to a central server, HopRadar uses your own radio as the data source. It shows the mesh your node actually hears, including nodes that appear on no public map.

HopRadar requires JavaScript and a browser with Web Bluetooth / Web Serial support (Chrome, Edge, Opera).

Learn more about HopRadar · Mesh the Mars – multiplayer mesh game

HOP//RADARTRACE YOUR MESH · FOR MESHCORE

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Cockpit

Legende

Cockpit

Monitor

🔌 Connect your node (BLE/USB) – without one it's demo & map only. ✕

Clean up contacts

Type Time filter

days

Run automatically

⭐ Favourites are never deleted

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Legend

Filters & symbols

Filters

📡 Repeater 👤 Client 🏠 Room server 🎯 Active route only

Nodes

📡 Repeater

👤 Client

🏠 Room server

Your node

🚶/🚗 Moving (from adverts)

Lines

Trace route

Radio path (arrows = direction)

SNR

≥ 5 dB good

0–5 dB marginal

< 0 dB weak

Reception

Repeaters you hear directly (last hop)

📡

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Info

⛰️ Elevation profile Antenna A m Antenna B m

Nodes

Trace

Chat

Channels

Click repeaters on the map (Trace tab must be active) in the order the packet should travel. The last repeater must be within your range.

Route

Result

No trace sent yet.

History

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Channel messages are flooded (broadcast) – no acknowledgement. The propagation wave is an estimate.

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Monitor

All radio events in real time

Msgs/ACK Trace Adverts RX-Log Frames

No events yet.

Message details

Node settings

Name

Radio parameters

TX power (dBm) Frequency (MHz) Bandwidth Spreading factor Coding rate Contacts

Warning: wrong radio parameters can disconnect the node from the mesh. Continue?

Demo mode: view only, no writing.