STM32WL55JC1 LoRa Mesh with Self-Healing - Seeking Library/Tutorial Guidance

[sram.1]

Hi everyone,

I'm working on a LoRa project using the STM32WL55JC1 microcontroller, and I'm looking to implement a self-healing mesh network with multiple repeaters.

Could anyone suggest existing libraries, detailed tutorials (step-by-step preferred), or GitHub repositories that would be helpful for this specific implementation? Any information or guidance on achieving a self-healing mesh with the STM32WL55JC1 would be greatly appreciated.

Thank you in advance for your time and assistance!

[sram.1]

Same topic - merged.

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Hi,

I am using the STM32WL55JC1 Development Kit. My project includes:

- Many transmitters read temperature every 15 minutes and broadcast data.
- Repeaters that forward the data to the gateway using a mesh topology.

I want to avoid data collision and achieve at least 99% reliability.

I tried the LoRa ping-pong example, and it works for a single hop. But I need a mesh system without collision.

Can you please suggest:
1. Best wireless technology (LoRa, FSK, etc.)
2. Firmware libraries or examples for a mesh network
3. Hardware recommendations (boards or antennas)

 

[STTwo-32]

Hello @sram.1 

Officially, there is not such a network implemented and tested on the STM32WL. So, i suggest you try to implement it on your own using the STM32WL.

Best Regards.

STTwo-32

[Andrew Neil]

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@STTwo-32 wrote:

try to implement it on your own using the STM32WL.

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@sram.1  but beware that implementing a mesh network is non-trivial.

You might start here - it includes some examples:

https://en.wikipedia.org/wiki/Wireless_mesh_network

Or maybe look at existing proprietary solutions - as noted earlier

[mƎALLEm]

Hello,

Please for all STM32Wxxx products need to be posted on the STM32 MCUs Wireless forum board not in the STM32 MCUs. I moved your post then.

Thank you for your understanding

[Andrew Neil]

The usual use case for mesh is to allow a number of (relatively) short-range links to cover a wide area.

But the whole point of LoRa is that it covers a very long range - "LoRa" = Long Range!

So what's the reasoning behind using LoRa in a mesh?

 

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@sram.1 wrote:

Could anyone suggest existing libraries, detailed tutorials (step-by-step preferred), or GitHub repositories 

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It's not such a common use-case, so there may not be a huge number of them.

What does your favourite internet search engine turn up for "LoRa Mesh"?

eg, https://www.thethingsnetwork.org/forum/t/which-one-is-better-lorawan-or-lora-mesh-network/68530/2 

Or perhaps just "Mesh network"?

GitHub has a search facility ...

 

PS:

It seems there are some proprietary LoRa mesh implementations; eg,

https://www.cdebyte.com/news/587#a3:~:text=Ebyte%27s%20LoRa%20MESH%20networking%20technology%20is%20independently%20developed

https://www.dryad.net/post/what-is-a-lora-mesh-network#viewer-ichb4722:~:text=our%20proprietary%20LoRa%20mesh%20implementation

 

This one says it's open-source: https://meshtastic.org/

 

All via https://www.google.com/search?q=LoRa+Mesh - other search engines are available.

 

[STTwo-32]

Hello @sram.1 

I've answered your question on your previous post.

Best Regards.

STTwo-32