Browsers don't advertise. Dongles do.

FallBridge pairs your browser to an ESP32 or nRF52 BLE-mesh dongle over Web Bluetooth GATT. Your phone is the UI. The dongle is the radio. Off-grid mesh messaging, powered by hardware you can buy for £15–30.

Connection

Status

not paired

Device

—

Protocol

—

Battery

—

Peers seen

0

Compose

Destination

Message

Stream

No messages yet. Pair a dongle to start.

Mesh peers

All nodes the dongle has heard from recently. RSSI is dBm at last hop. Hops shows how far away in the mesh.

No peers heard yet.

Raw terminal

Send arbitrary hex to the RX characteristic. Read stream is decoded UTF-8 with hex fallback. For firmware developers only.

RX Log

// awaiting bytes…

Register as FallCarrier transport

When enabled, FallBridge exposes itself on window.FallCarrier as a routing transport. FallMail and other estate apps will use the BLE-mesh path when available.

Publish transport

Off — apps in this tab won't route via BLE mesh.

Transport name

fallbridge-ble-mesh

Available

no (not paired)

Route

browser → GATT → dongle radio → mesh

Integration snippet

// in your app import { FallBridge } from 'https://sjgant80-hub.github.io/fallbridge/fallbridge.js'; const bridge = new FallBridge(); await bridge.pair(); window.FallCarrier?.register(bridge.asCarrierTransport());

Buy the right dongle

You need hardware that can advertise on BLE and run a mesh stack. These all cost £15–30 and Meshtastic firmware is free.

LILYGO T-Beam v1.2

ESP32 + LoRa SX1276 + GPS + battery holder. The workhorse. LoRa gives you kilometres of range, not just BLE metres.

meshtastic.org · T-Beam guide

LILYGO T-Echo

nRF52 + e-paper display + LoRa. Pocketable, sunlight-readable, all-day battery. Best for handheld carry.

meshtastic.org · T-Echo guide

Heltec V3 LoRa32

ESP32-S3 + LoRa + OLED. The cheapest ticket in. Under £20 direct from Heltec. Good desktop base station.

meshtastic.org · Heltec V3 guide

RAK Wireless RAK4631

nRF52840 + LoRa in the RAK WisBlock modular ecosystem. Best power efficiency for solar or long-runtime nodes.

meshtastic.org · WisBlock guide

Flash the firmware

Plug the dongle into USB, open the web-flasher in Chrome, pick your board, click flash. Two minutes.

flasher.meshtastic.org →

Or use any BLE-UART firmware that exposes the Nordic UART Service (NUS). FallBridge speaks both.

About FallBridge

FallBridge is a browser-side terminal for BLE-mesh dongles. Web Bluetooth is a restricted API — a browser cannot advertise, cannot be a peripheral, and cannot itself join a mesh. But it CAN connect to a GATT peripheral that can. That's the whole trick.

The dongle you buy runs Meshtastic (or bitchat, or any BLE-UART firmware). It handles advertising, scanning, radio hops, LoRa if fitted. FallBridge is the bridge between browser tab and that hardware — read peer list, send messages, subscribe to incoming.

Register as a FallCarrier transport and FallMail, FallReach and other estate apps route through the mesh when available. Off-grid, no ISP, no cell tower.

Estate primitives used

FallID

sjgant80-hub.github.io/fallid

FallCarrier

sjgant80-hub.github.io/fallcarrier

FallMail

sjgant80-hub.github.io/fallmail

License

MIT · fork, run, mesh. Repository at github.com/sjgant80-hub/fallbridge.