In this video, I'll be showing a project called Meshtastic_SDR. This project leverages GNU Radio and a software-defined radio (SDR) to decode Meshtastic messages using a Python-based decoder. You can find the project on GitLab here
gitlab.com/crankylinuxuser/me...
What is Meshtastic?
Meshtastic is a powerful open-source project that enables communication via low-cost LoRa radios. It’s designed for creating mesh networks, allowing devices to relay messages across a wide area without relying on traditional infrastructure. The protocol is perfect for off-grid communication, emergency situations, and hobbyist networking projects.
Project Overview:
In this video, I demonstrate how to use a flow graph designed specifically for all US-based frequencies with a 250 kHz bandwidth setting using an *RTL-SDR*.
Key Components:
- GNU Radio: The open-source software toolkit that processes the radio signals.
- RTL-SDR: The affordable software-defined radio used to capture the signals.
- Python Decoder: A script that decodes the Meshtastic messages from the radio signals.
Technical Details:
The flow graph utilizes separate ports on a ZMQ sink for different preset types (e.g., long, fast), allowing the Python decoder to be opened multiple times, each instance pointing to a specific port, facilitating simultaneous decoding of various message types. The AES key of the Meshtastic network is required to decode the messages.
Advantages of Using SDR:
The major benefit of using an SDR in this setup is its ability to monitor multiple presets at once, unlike traditional Meshtastic equipment, which is usually limited to a single preset.
Conclusion:
Join me in exploring how this Meshtastic_SDR project can emulate standard Meshtastic equipment, with the added versatility of SDR technology. Whether you're a radio enthusiast, a software developer, or just curious about off-grid communication systems, this project has something to offer.
Resources:
- Meshtastic Project meshtastic.org/
- Meshtastic_SDR on GitLab gitlab.com/crankylinuxuser/me...
- GNU Radio www.gnuradio.org/
- RTL-SDR www.rtl-sdr.com/
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Негізгі бет Ғылым және технология WarDragon Real-Time Decoding Meshtastic w/ GNU Radio & SDR (RTLSDR v3)
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