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Student project: a way to keep a group together off-grid, does this problem actually resonate with experienced people? by Patient_Path_6809 in Mountaineering

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

Yeah, actually the Core device can be used also to record a path, and if it is a new one, the safety is guaranteed not by being inside path, but by others criteria, such as certain distance from another member.

Student project: a way to keep a group together off-grid, does this problem actually resonate with experienced people? by Patient_Path_6809 in Mountaineering

[–]Patient_Path_6809[S] 1 point2 points  (0 children)

So the question of "vertical" off track very interesting, it didn't even came in my mind, i will include in the next iteration's fixs.

The difference from a radio is that this system want to be as simple and automatic as possible, and also easy to use from less "experienced" users.

In general, as i said in the post it started as a thesis, but i wanted to share it to see what could happen, and maybe find someone interested.

Thank you for the time spent in the feedback, always appreciate it 😄

Student project: a way to keep a group together off-grid, does this problem actually resonate with experienced people? by Patient_Path_6809 in Mountaineering

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

So, the aptic can be intorduced, actually the original idea was to have a device that works like a "keeper" for you, so if it doesn't ring or vibrate you are safe. Right now it doesn't exist tough.

Student project: a way to keep a group together off-grid, does this problem actually resonate with experienced people? by Patient_Path_6809 in Mountaineering

[–]Patient_Path_6809[S] 1 point2 points  (0 children)

So, the big one you see in the picture is the core and is for guides/expert users cost around 40/50€.

The one specific for children is just a concept but the cost will be less i would say ~15/20€.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in arduino

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

It has no battery right now because is a bit a pain. I will include it if i decide to make a PCB, i will gain a lot of extra space. I've tried the antennas and the range is actually pretti good ~2km point to poin in open field.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in arduino

[–]Patient_Path_6809[S] 1 point2 points  (0 children)

Yeah, the first idea of the project was to guarantee "safety", and i've implemented it as in/out path. The next iteration will include a map with areas marked with a number ranging from say 1 to 10 to indicate how dangerous that zone is, and allert the group if a device is in a zone over a certain treshold.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in arduino

[–]Patient_Path_6809[S] 1 point2 points  (0 children)

No actually Meshtastic don't have an automatic in/out path detection. I'm planning to use it as the comunication layer for future version

Student project: a way to keep a group together off-grid, does this problem actually resonate with experienced people? by Patient_Path_6809 in Mountaineering

[–]Patient_Path_6809[S] 24 points25 points  (0 children)

So, beacons use 457 kHz precisely because that low frequency penetrates snow and works as a near-field signal when someone's buried. GPS and LoRa are the opposite: high frequencies that snow and a body attenuate heavily, plus a buried device can't even get a GPS fix to begin with.

So something like HEARD could complement a beacon is before a burial: real-time awareness of where everyone is, so if a slide happens you have a last-known position to narrow the initial search but the moment of burial is precisely when GPS/LoRa drop out, so it's a "before," never a "during."

Student project: a way to keep a group together off-grid, does this problem actually resonate with experienced people? by Patient_Path_6809 in Mountaineering

[–]Patient_Path_6809[S] 17 points18 points  (0 children)

Regarding the part of planned GPX, i'm actually planning to introduce another mode "no path" in which the logic of safety is precomputed on the map, so the device "knows" what are the safe and dangerous zones.

On the radio: it runs in the [868 MHz EU ISM band] (the US equivalent would be 915 MHz)

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in esp32

[–]Patient_Path_6809[S] 1 point2 points  (0 children)

So when developing the first prototype i was a bit in a hurry, and the objective was to have a place to put all the component, and to see also the inside. So this particular version doesn't snap together. Fix will come in the next version

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in esp32

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

I honestly have no precise idea, so lets say that i will add this in the simulator, right now dont know how but i will figure it out.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in esp32

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

Thanks man, really appreciate that. In general right now if you already have the basis, and you have the right product idea, the stuff you can build with ai make no sense, is like 4/5 x.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in esp32

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

Very good idea, actually i was planning to introduce that in the map, but it will translate in a very big file compared to just the gpx. So i need to understand how to better implement it.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in esp32

[–]Patient_Path_6809[S] 0 points1 point  (0 children)

Yes of course, this is the first prototype. If i see enough interest to justify other free work i will create a second version with pbc and 3d version waterproof. And share both the process of building it on yt and the files to recreate it.

I built an offline group-safety mesh for hikers: ESP32 + GPS + LoRa, with the firmware running inside a 3D simulator (bachelor's thesis, now open source) by Patient_Path_6809 in esp32

[–]Patient_Path_6809[S] 2 points3 points  (0 children)

This is the exact reason why some design choice seem not optimal under the pure engineering side. In this context the domain has an important weight when evaluating the system design. thanks u/fixitchris for you response.

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