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Hardware selection for Master-Multiple slave configuration

AnupK

Hey Hi all,
I am new to BLE Technology and it's programming. Well, I need some help on my project that I am working on.
I have multiple (=25) peripherals and I want each peripheral to connect to a master node and send its ID / ESN? Is this achievable? If Yes, which hardware components would be suitable for respective roles?

Thank You!

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    Hello,

    I don't think you will be able to connect all 25 peripherals at once. Both the s132 and the s140 softdevices specifies that it supports up to 20 concurrent connections. However, I think that the softdevice will spend almost all of it's memory supporting 20 connections, so you will actually achieve a little less than 20.

     

    I believe that 15-16 links should not be a problem. The number depends on your application.

    However, if you don't need to be connected to all 20 devices at once, then this should not be a problem. You can also look into Bluetooth Mesh, or Thread or Zigbee as alternative solutions.

     

    Note that the networks solutions, Bluetooth Mesh, Zigbee and Thread (Zigbee and thread are not actually bluetooth, but supported by the radio on the nRF52840) have some limitations in the data transfer speed, so depending on your application, regular BLE might still be the best options.

     

    So how much data and how often are you thinking of sending this data?

     

    Best regards,

    Edvin

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  • 0

    Hello,

    I don't think you will be able to connect all 25 peripherals at once. Both the s132 and the s140 softdevices specifies that it supports up to 20 concurrent connections. However, I think that the softdevice will spend almost all of it's memory supporting 20 connections, so you will actually achieve a little less than 20.

     

    I believe that 15-16 links should not be a problem. The number depends on your application.

    However, if you don't need to be connected to all 20 devices at once, then this should not be a problem. You can also look into Bluetooth Mesh, or Thread or Zigbee as alternative solutions.

     

    Note that the networks solutions, Bluetooth Mesh, Zigbee and Thread (Zigbee and thread are not actually bluetooth, but supported by the radio on the nRF52840) have some limitations in the data transfer speed, so depending on your application, regular BLE might still be the best options.

     

    So how much data and how often are you thinking of sending this data?

     

    Best regards,

    Edvin

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