Meshtastic - open source - off grid communication

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<div class="atitle2">no wifi, mobile, internet? 
<div class="atitle" style="font-size:200% !important">Meshtastic</div>
 
by Peter Martin / <a href="https://db8.nl" target="_blank">db8.nl</a>
 
slides: <a href="https://slides.db8.nl" target="_blank">https://slides.db8.nl</a>
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<div class="title">Off-Grid Communication: Meshtastic 
<ul style="font-size: 70%">
<li>Meshtastic = Mesh + Fantastic</li>
<li>Understanding Meshtastic</li>
<li>How to start with Meshtastic?</li>
<li>Questions</li>
</ul>
</div>

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<div class="title">Meshtastic - Mesh + Fantastic</div>

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#### Long-Range, Decentralized Messaging

- Send messages without 
 - Wi-Fi, cellular networks, or internet?
- Meshtastic
 - Open-source, off-grid, long-range communication using Long Range(LoRa) technology.
 - Decentralized mesh network – No cell towers, no satellites needed.

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## Real-World Applications

- Outdoor Adventures & Hiking 
 - Stay connected without cell service
- Disaster Relief & Emergencies 
 - Works when infrastructure fails
- Rural & Off-Grid Communication 
 - Alternative for areas with no cellular service
- Tactical & Security Use
 - Secure, silent communication for military, preppers, and special ops

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<div class="title">Understanding Meshtastic</div>

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## What is Meshtastic?

- Open-source, decentralized communication system
- Uses LoRa radio signals to send messages
- Designed for off-grid and emergency communication

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### How It Works
- Each device = a node that relays messages
- Mesh networking = Extends range by hopping messages
- Low-power, long-range = Ideal for outdoor & emergency use

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## Key Features & Capabilities

<ul style="font-size: 90%">
<li>Long-Range Communication - Several km in open terrain</li>
<li>Mesh Networking - Messages hop between nodes</li>
<li>Low Power Consumption - Days of battery life</li>
<li>GPS & Location Sharing - Tracking, navigation, and safety</li>
<li>Secure & Private Messaging - Encryption available</li>
<li>Open-Source & Customizable - Modify & enhance features</li>
</ul>

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<div class="title">How to start with Meshtastic?</div>

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### How to start

- LoRa Device (<a href="https://heltec.org/eadge-computing/" target="_blank">Heltec</a>, 
<a href="https://lilygo.cc/collections/lora-or-gps" target="_blank">LilyGO</a>,
<a href="https://store.rakwireless.com/collections/meshtastic" target="_blank">RAK</a>, etc.)
 - SDR (Short Range Devices) License-free operation.
 - Which frequency?
- Meshtastic App (
<a href="https://apps.apple.com/in/app/meshtastic/id1586432531" target="_blank">iOS</a>, 
<a href="https://play.google.com/store/apps/details?id=com.geeksville.mesh" target="_blank">Android</a>, 
<a href="https://meshtastic.org/docs/software/" target="_blank">Desktop</a>)
- Firmware & Configuration (<a href="https://flasher.meshtastic.org/" target="_blank">Flash device</a>, tweak settings)

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### Lora devices frequencies
 

<ul>
 <li>433 MHz
 <ul>
 <li class="fragment">NL: Wireless Home Automation, Weather Stations, 
 Car Key Fobs, Garage Doors, Wireless Doorbells 
 Power max 10 mW, duty cycle: 10%</li>
 </ul>
 </li>
 <li>868 MHz
 <ul>
 <li class="fragment">NL: Wireless Smart Meters, RFID, 
 Zigbee 868 MHz, Z-Wave 868.42 
 Power max 25 mW, duty cycle: 10% 
 Power max 500 mW LoRaWAN.</li>
 </ul>
 </li>

</ul>

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### Heltec WiFi LoRa 32(V3) 868 MHz

Mine was 15.75 Euro. Replaced internal antenna!

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### Flashing Heltec WiFi LoRa 32(V3)

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### My Heltec WiFi LoRa 32(V3)

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### My connections

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### Possible connections

<a href="https://map.meshnet.nl/?lat=51.79290380494767&lng=365.93742370605474&zoom=11" target="_blank">map.meshnet.nl</a>

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### Communication

- send/receive messages via App on phone
- or get a standalone Meshtastic device

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## More info

- <a href="https://meshtastic.org" target="_blank">meshtastic.org</a>
- <a href="https://www.meshnet.nl" target="_blank">meshnet.nl</a>

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<div class="title">Questions?</div>

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## Photo Credits

<ul style="font-size:50%">
<li>https://seeklogo.com/vector-logo/483887/meshtastic</li>
<li>https://pixabay.com/photos/notebook-paper-pages-open-731212/</li>
<li>https://unsplash.com/photos/light-writing-photography-in-forest-CbgXKSd3qkQ</li>
<li>https://unsplash.com/photos/green-and-black-rope-BW0vK-FA3eg</li>
<li>https://unsplash.com/photos/person-holding-black-android-smartphone-xruML_FcCOk</li>
<li>https://unsplash.com/photos/man-in-black-crew-neck-t-shirt-and-beige-pants-sitting-on-white-and-blue-stairs-XY0uyBhZWCA</li>
</ul>

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