A Reticulum/LXMF mesh node running on a Raspberry Pi Zero 2W, combining SDR spectrum monitoring, LXMF chat, noise floor graphing, and a browser-based PTY terminal — all served via a dedicated WiFi hotspot.
This is the original single-page combined view. For the version with the live dartboard node map see pi-mesh-node-full.
- SDR Waterfall — RTL-SDR spectrum and waterfall display at 869.525 MHz via Rust WebSocket server
- LXMF Chat — send and receive messages with other Reticulum/LXMF nodes
- Live Announces — nearby mesh nodes with hop count, unread message indicators
- Noise Floor Monitor — real-time Chart.js graph of RNode RF noise over 5 minutes with interference event markers
- PTY Terminal — full xterm.js browser terminal compiled into the SDR page (supports htop, cmatrix, vim etc.)
- Combined View — SDR + LXMF + noise graph on one page (port 8084)
- Landing page — port 80 with clock, quick notes widget, and shutdown button
- Keep-style notes — multi-note app with search and highlighted results
- Settings and presets — SDR frequency, gain, bandwidth saved as named profiles
- Hash deduplication — merges multiple LXMF addresses from the same MeshChat node
- Node name sanitisation — strips binary garbage from announce display names
- Raspberry Pi Zero 2W
- NESDR SMArt v5 RTL-SDR dongle
- RAK4631 RNode (LoRa 869.525 MHz, SF10, 250 kHz BW)
- Waveshare 4-port USB hub HAT
- DS3231 RTC module (I2C)
- USB ethernet adapter (optional, for setup)
| Port | Service |
|---|---|
| 80 | Landing page |
| 8080 | SDR waterfall page (Rust) |
| 8081 | WebSocket — binary spectrum frames |
| 8082 | LXMF/Announces UI + static files (xterm.js) |
| 8083 | WebSocket — live LXMF events + noise samples |
| 8084 | Combined view (SDR left, LXMF + noise right) |
| 8085 | WebSocket — PTY terminal |
- Rust — RTL-SDR reader, FFT, WebSocket server, binary spectrum protocol
- Python 3 —
rns==1.1.3,LXMF==0.9.3,websockets==16.0,msgpack==1.1.2 - Reticulum Network Stack — transport and LXMF messaging
- xterm.js 5.3.0 — browser PTY terminal (compiled into SDR page)
- Chart.js 4.4.0 — noise floor graph
- Vanilla HTML/JS — no framework dependencies
| File | Purpose |
|---|---|
main.rs |
Rust SDR server source |
Cargo.toml |
Rust dependencies |
sdr-index.html |
SDR waterfall + terminal UI — copy to src/index.html before compiling |
rns-web.py |
Python LXMF/announces/terminal/noise/combined server |
rns-index.html |
LXMF browser UI |
landing.html |
Landing page |
landing-server.py |
Port 80 HTTP server with notes API and shutdown |
landing.service |
systemd unit for landing server |
notes.html |
Keep-style multi-note app |
SETUP.md |
Complete setup reference |
setup-desktop.sh |
Rust toolchain setup on Ubuntu desktop |
setup-pi-1.sh |
Pi first-boot setup (pre-reboot) |
setup-pi-2.sh |
Pi second-stage setup (post-reboot) |
setup-pi-3.sh |
Verification checks |
setup-deploy.sh |
Deploy files from desktop to Pi |
See SETUP.md for complete step-by-step instructions covering fresh Bookworm Lite install through to running services.
Important: sdr-index.html must be copied to ~/sdr-ws/src/index.html and recompiled before deploying the Rust binary. See setup-desktop.sh.
Important: Back up ~/lxmf-storage/identity from the Pi — this file is your LXMF address on the mesh and cannot be regenerated.
MIT