Meshtastic is an open-source project that develops a low-power mesh network based on LoRa technology (Long Range). It enables communication over long distances without the need for cellular networks or Wi-Fi, making it ideal for outdoor activities or areas lacking network coverage. The devices are GPS-enabled and support various applications such as disaster relief or building community networks. If you want to learn more about Meshtastic, feel free to check out my other posts on the topic.
To get started with Meshtastic, you need at least one Meshtastic device, but it's definitely more fun with two devices. Depending on where you live and your plans, a single device may be sufficient. Meshtastic is particularly popular in Switzerland and western Germany, so there's a good chance your device (node) will be part of an existing network, allowing you to easily find other participants to communicate with. However, a second device is still valuable, especially for range tests and experiments. If you have friends within 10-20 kilometers who are also tech enthusiasts, you can quickly set up your own network.
Meshtastic Devices
Meshtastic devices come in a variety of versions to meet different needs. The main differences lie in the type and size of the display, battery life, and the pre-installed sensors and modules — such as a GPS module for locating the device. Also, some come with a case, while others do not. A popular and affordable entry point is the Heltec devices, like the Heltec V3 or the Heltec Tracker, which additionally includes a GPS module. These are available from about €20, but usually come without a case. Depending on the supplier, you may order a case separately; however, many hobbyists prefer to make their own case using a 3D printer. This offers maximum flexibility in selecting accessories and battery size.
If you are looking for a finished device with an elegant case, E-Ink display, and long battery life of up to 5 days, the LILYGO T-Echo, which also integrates GPS, might be interesting for you. It is available from about €60. For outdoor use, for example on a nearby mountain or the roof of your house to maximize range, a visit to Wisblock is worthwhile. For around €80, you can get a solar-powered node with a case there, ideal for outdoor deployment. I personally own such a node, which has been running for over two months on my balcony, and the built-in 3000mAh battery seems to be sufficiently charged by the solar cell. Whether it will survive the winter with its cold temperatures and reduced sunlight remains to be seen.
My personal favorite device is the SenseCAP Card Tracker T1000-E. On the right in the sidebar, you'll find a list of common devices.
Which Frequency Should I Choose?
In addition to the different device options, the choice of frequency plays a crucial role in the Meshtastic network. There are several frequency bands that can be used for LoRa communication, including the popular 433 MHz, 868 MHz, and 915 MHz bands. In Europe, the 868 MHz frequency band is particularly relevant. This is mainly due to regulatory requirements in Europe that allow efficient and interference-free use of this band. The 868 MHz band offers a good balance between range and penetration through obstacles such as buildings or trees and is specifically optimized for IoT applications, which Meshtastic is part of.
Meshtastic Installation
Most Meshtastic devices come with pre-installed firmware. However, this firmware is often not up to date, as Meshtastic receives updates nearly weekly. It is advisable to install the latest firmware version as soon as you receive your device. The Meshtastic Flasher makes this process straightforward. Simply select your specific device from the dropdown menu on the flasher site, and you will receive an easy-to-follow guide as well as the latest software version.