The Problem

Meshtastic nodes talk easily to a phone over Bluetooth, but a node sitting on a shelf near your router, reachable over WiFi, is harder to see into. There was no proper desktop app for that. You had a companion app built for phones, or a browser tool that expected you to write your own client.

nullmesh is a Windows app that connects to a Meshtastic node over IP. It gives you messaging, network visualization, telemetry and full device configuration in one window.

What's Inside

• IP Connectivity. Connect to a Meshtastic node directly over TCP/IP or WiFi. No Bluetooth or serial cable needed.
• Messaging. Direct messages and channel broadcasts, with delivery status, retries and signal info for each message.
• Network Visualization. A live map of every node your radio has heard, colored by signal quality, with a detail popup for each.
• Telemetry and Peers. Battery, voltage, signal strength and last heard time for every node on the mesh.
• Device Configuration. Read and write your radio's full config (device, position, power, network, display, LoRa, Bluetooth, module settings) from one screen.

Design Principles

• Nothing reaches the radio unchecked. Every config field the app can write is whitelisted and range checked before it is sent. The radio never sees a value the UI did not validate first.
• IP first. nullmesh talks to your node over plain TCP/IP on your local network. No cloud account, no vendor bridge, no pairing required.
• One page, one job. Messages, Peers, Map, Channels and Config are separate pages, not one dashboard trying to do everything.
• A locked design system. The UI runs on nullxx, a small token driven design system: flat surfaces, one teal accent, soft shadows. Change the tokens and the whole app retints.

Installation

Want to run it? Get the latest installer from Releases. It is a standard Windows .exe. No Node.js or command line required.

Building from source:

git clone https://github.com/BeardedTech0o/nullmesh.git
cd nullmesh
pnpm install
pnpm start

To build your own installer, double click BUILD.bat, or run pnpm dist. See README-BUILD.md for details.

Contributing

This is a personal project, tuned to one setup and one Meshtastic node's worth of testing. If you hit a bug or have a suggestion, open an issue.