Best pratice solution for designing a 50 nodes system cover 100 meter range.

Hello DevZone team, 

Currently, I want to design a wireless sensor system which can cover around 100 meter range.

It can be in any kind of topology: mesh, star, ... as long as it meets the requirements: retrieve data from 50 other sensor nodes with speed is around 1kByte per second.

As far as I know, nrf52840 long range still not available for mesh network design: https://devzone.nordicsemi.com/f/nordic-q-a/37952/mesh-networks-on-nrf52840-dongle and if we use normal connection, it can not meets the requirements: 50 nodes. 

Any suggestion on this?

Thank you very much.

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  • Hi.

    Sounds like Mesh would be a good solution for you.

    As far as I know, nrf52840 long range still not available for mesh network design

    You are correct. The Mesh Specification is based on the Bluetooth 4.2 specification, so there is no BT5 features available. 

    In order to solve challenge with the range, you can add relay nodes between the sensor node and it's destination.
    That way you can cover larger distances in your network.

    The relay nodes will scan for messages from your sensors, and relay them through the network.

    Best regards.

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