The majority of communication systems are built on a foundation of fixed infrastructure. A cell phone is only as good as its tower, Wi-Fi requires a router and traditional radios need the user to be in direct range. Such arrangements are fine so long as everyone stays within the bounds of the network. But put some distance between the group and the area the system was put in place to cover and they will fail.
But consider a trail team making its way over rough ground or vehicles parting ways at an unmarked turn. Event personnel may be shuttling between far off checkpoints while others make their way from one side of a large property to the next. The members are still of the same party, yet the system in place fails to account for their position.
Mesh network technology is the answer to that problem. It does not require users to make themselves scarce from a central radio or stay in the vicinity of a tower. Rather, the network is formed by the very devices the group has on hand. Take the SpecFive MiniTrekker MKII, for instance; with a node this size the network can go where the people do, rather than being left behind.
How Mesh Network Technology Keeps Moving Teams Connected
Communication problems have a way of following a group in motion. For the most part, these issues are not the result of some dramatic breakdown in service. More often they are a byproduct of the party members separating from one another. The lead hiker may break away to scout the route, or a support vehicle will stay put with the gear. Someone might be dispatched to an alternate entrance while a couple take a side trail to get around an obstacle.
At the outset there is no trouble holding a direct conversation, but as the formation of the group changes, so does the space and the obstacles between them. A point-to-point radio is only as reliable as the line of sight it has; put too much ground between sender and receiver and the terrain will do the rest.
Mesh network technology puts a different spin on the matter. By using compatible devices as nodes on a shared network, a message can be routed through an intermediate node before it gets where it is going, depending on the firmware and lay of the land. It means communication is not restricted to the two at the far edges of the group because the equipment in the middle can provide another avenue for it. In short, the network adapts to the team’s position instead of demanding they hold their ground in a static coverage area.
The Case for Smaller Nodes in Mesh Network Technology
There is an obvious logic to it: a mesh is only as practical as the distribution of its devices. Yet in practice, the dimensions of the hardware are what often make or break that distribution.
You will find a bulky communication unit confined to the interior of a vehicle. A complex piece of kit might be the sole province of the team leader. And heavy equipment has a way of being relegated to the bottom of a pack where it cannot do its job.
With the SpecFive MiniTrekker MKII we have set out to remove those obstacles to node placement. Weighing in at some 63 grams thanks to its PETG enclosure, it is not a full handheld terminal one has to lug around, but something that can be readily added to gear.
This compactness opens up possibilities for deployment. A hiking party can put a node with the person in front, one in the middle and another at the rear. Property teams can have them in the hands of workers spread across the site. For an event, organizers can see to it that staff at the entrance, parking lot or a support station are all equipped.
It is not so much that the MiniTrekker MKII is small for its own sake; the point is that it is something more of the group can actually carry. When the nodes are positioned in keeping with how the group moves, the mesh becomes far more useful.
Select the Version for Your Actual Needs
We offer the SpecFive MiniTrekker MKII in two editions since a one-size-fits-all approach to radio power, GPS, battery life and connectivity does not suit every deployment. In the end, the right model is determined by the way you intend to put the network to work.
ESP32-S3 Wi-Fi Edition: Power and Flexibility
If stronger radio output and more connectivity are what is required, the ESP32-S3 edition is the answer. With its 28 dBm radio and an external antenna, it is the more powerful of the two MKII versions.
The inclusion of Wi-Fi and MQTT support is of particular value to developers and teams looking for compatible integrations or to tailor their own workflows. This is not a version for those who are after the biggest numbers on the spec sheet; it is for users who mean to build around the node.
You will find this to be the better fit if your priorities include:
- A more flexible technical arrangement
- Wi-Fi and MQTT
- Experimentation with custom integrations
- Higher radio output
nRF52 Long-Life Edition: Designed for Mobility and Endurance
With an emphasis on efficient mobile operation and extended run time, the nRF52 edition is built to last. It comes with Bluetooth and dual-band L1/L5 GPS, offering a level of positioning support in trying conditions that a standard single-band unit simply cannot match.
In terms of power, one can expect around 12 hours from active use or as much as 48 in standby mode. By those figures, the battery life is some three times what you would find in the ESP32-S3 edition.
There are certain users for whom this version makes more sense, particularly those looking to get the most out of their equipment on long outings or during all-day, multi-stage field work where reduced charging is a plus. When a team is in the field for any length of time, endurance is often of greater consequence than Wi-Fi or MQTT. The nRF52 has been put together with that in mind.
It is the right choice if the priority is:
- Bluetooth
- Field deployments of any duration
- Longer excursions with less need to recharge
Concluding It All
You will find that a network is only as good as the people who carry it. The true appeal of mesh network technology has little to do with a single device making contact over an open field. The value is in spreading the network out among those already on the move in the environment.
This is the role of the SpecFive MiniTrekker MKII. We have two ways to put our solution to work, each with its own strengths. The ESP32-S3 edition is for the user in need of more power and technical headroom, offering Wi-Fi, MQTT and a stronger radio output. If endurance and mobility are what is required, the nRF52 version will serve better with its dual-band GPS, Bluetooth and superior battery life.
At their core, both are designed to put compact communication nodes where they belong rather than having the group tethered to some fixed infrastructure. Let the network come along for the ride.
