Meshtastic® is a project that enables you to use inexpensive LoRa radios as a long range off-grid communication platform in areas without existing or reliable communications infrastructure. This project is 100% community driven and open source!
Long range (331km record by MartinR7 & alleg). No phone required for mesh communication. Decentralized communication - no dedicated router required. Encrypted. Excellent battery life. Send and receive text messages between members of the mesh. Optional GPS based location features.
Meshtastic utilizes LoRa, a long-range radio protocol, which is widely accessible in most regions without the need for additional licenses or certifications, unlike HAM radio operations. These radios are designed to rebroadcast messages they receive, forming a mesh network. This setup ensures that every group member, including those at the furthest distance, can receive messages. Additionally, Meshtastic radios can be paired with a single phone, allowing friends and family to send messages directly to your specific radio. It's important to note that each device is capable of supporting a connection from only one user at a time.
Yggdrasil is an overlay network implementation of a new routing scheme for mesh networks. It is designed to be a future-proof decentralised alternative to the structured routing protocols commonly used today on the Internet and other networks.
The current implementation of Yggdrasil is a lightweight userspace software router which is easy to configure and supported on a wide range of platforms. It provides end-to-end encrypted IPv6 routing between all network participants. Peerings between nodes can be configured using TCP/TLS connections over local area networks, point-to-point links or the Internet. Even though the Yggdrasil Network provides IPv6 routing between nodes, peering connections can be set up over either IPv4 or IPv6.
This is still an alpha-stage project and there may be some breaking changes in the future. Despite that, Yggdrasil is generally stable enough for day-to-day use and a small number of users have been using and stress-testing Yggdrasil quite heavily for a variety of use cases.
An analysis of how to estimate the bandwidth loss of single vs. multiple-radio mesh nodes based on traffic.
A web application that visualizes the structure of a mesh network running the Babel protocol. Requires node.js >=v0.4.0 and npm >=v1.0