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Overview Meshtastic supports up to 8 simultaneous channels (index 0 - 7). Channel 0 is the primary channel; channels 1 - 7 are secondary channels used for specific groups or purposes. Channel Anatomy Every channel has three defining properties: Name - a hum...

How Channel Sharing Works Meshtastic encodes channel configuration as a URL containing a Base64-encoded protobuf payload (a ChannelSet). This URL can be displayed as a QR code or shared as a plain link. At minimum the payload encodes the channel definition(s) ...

Public Infrastructure Nodes Nodes acting as public infrastructure (repeaters, routers) are commonly configured with the default public PSK on channel 0, which lets them participate in and originate traffic on the public channel. But relaying does not require s...

This guide walks through assembling a low-cost, outdoor solar-powered LoRa repeater using the RAK4631 WisBlock platform. The build is weatherproof, low-power, and deployable on a single weekend afternoon. (Component prices below are approximate and volatile — ...

⚠ FCC COMPLIANCE WARNING — READ BEFORE BUILDING: Under FCC Part 15 (47 CFR §15.247) the 902–928 MHz band has a hard conducted-output ceiling of 1 W (30 dBm) at the coax, referenced to an antenna of up to 6 dBi. This conducted limit applies before antenna gain ...

A rooftop gateway bridges your local LoRa mesh to the internet, enabling remote monitoring via meshmap.net, MQTT integration with Home Assistant, and APRS forwarding. This build uses a Raspberry Pi Zero 2W paired with a USB-connected LoRa node as the simplest,...

Architecture Overview The full telemetry pipeline runs: Meshtastic node → MQTT broker → Telegraf (or Python subscriber) → InfluxDB 2.x → Grafana dashboard. Each component is independently replaceable, so you can swap Telegraf for a custom Python script wi...

MeshCore Sensor Support MeshCore does not ship a separate "Sensor" firmware variant. MeshCore device firmware is built around three roles - Companion, Repeater, and Room Server. Environmental-sensor support is a compile-time feature: it is enabled when th...

Site Selection Place sensors where you need data - not where it is convenient to access. Ideal sites are often inconvenient: a peak for a weather station, a stream bank for water level, a crop row for soil temperature. Choose the site first, then engineer...

Overview This page describes MeshCore's actual sensor support, which is deliberately minimal and differs substantially from the richer Meshtastic telemetry model. The most important facts to understand up front: Sensor support is a compile-time feature....

Urban Propagation at 915 MHz Dense urban environments present some of the most complex RF propagation conditions for mesh networks. Understanding these effects helps planners place nodes effectively and set realistic range expectations. Street Canyon Effect Bu...

Forest and Vegetation Propagation at 915 MHz Vegetation is one of the most significant impairments to 915 MHz propagation. Forested terrain requires a fundamentally different planning approach from open or urban environments. Foliage Attenuation 915 MHz is sig...

Mountain and Complex Terrain Propagation Mountain and highly variable terrain introduces propagation challenges - and opportunities - that differ fundamentally from flat-land or urban planning. Terrain masking is the dominant factor, but ridge placement can tu...

Water and Coastal Propagation Water surfaces create some of the most favorable RF propagation conditions at 915 MHz. Coastal and over-water deployments can achieve ranges that far exceed typical terrestrial links. Over-Water Propagation At low grazing angles, ...