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Is a nRF52832 right choise in this case?

Rasul Kishov

image descriptionHello!

I want to create my first BLE devices and nrf52 is a choise. Devices should work as described below and before I purchase few nrf52 DK I want to be sure that it's accomplishable with nRF52832:

  1. I need to transmit 4 byte of data every 20 ms to my device (DEV1/DEV2/DEV3) to control it in real time. Power consumption is not an issue here. (look at the picture attached pls)
  2. Transmitter could be either smartphone (Android/iOS) or our own control device (also controlled by nRF52832).
  3. Other elements also use BLE but in broadcasting mode and should send messages with as small lag as possible (less than 50 ms) when some of kind event occur (button pressed, for example). This lag can has influence on the UX. At least DEV1/DEV2/DEV3 should get that messages. Data rate here is much slower - few bytes per second is maximum.
  4. DEV1/DEV2/DEV3 should do a lot of stuff but they are not realy time critical. Did I understand that right that we don't not need any additional MCU?
  5. Also I want to ask what approximate price would be for nRF52832 chips in China if I will use thousands of them?

As I a read documentation it's all possible to do, but I just little bit scared because I have not experience with BLE. That's why I need recommendation from a specialist.

I would be really grateful if someone can give any comments about questions above. Also I'm searching for Bluetooth guru (I'm ready to pay for 30 minutes consultations)

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    Hi,

    I am not 100% sure on your unmarked boxes, are they some kind of broadcast-mesh(this github project might be interesting for you if so)?

    Either way:

    1. Yes, these datarates are easily achieveable by BLE and the nRF52 series. As Jan commented, you might be limited by the smartphone.

    2. This is no problem, for example our tutorial on testing and debugging a BLE service demonstrates a connection from our development kit to a smart phone app that we have developed.

    3. Generally latency is very low, again as Jan said, you might be limited by the smartphone.

    4. The nRF52 is a powerful MCU, as an example of computing power you can check out this recent blogpost. It is also worth noting that the nRF52 has a floating point unit, which makes it very capable.

    5. For a price estimate you will have to contact your regional sales manager, send me a personal message and I will put you in touch.

    Best regards,

    Øyvind

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  • 0

    Hi,

    I am not 100% sure on your unmarked boxes, are they some kind of broadcast-mesh(this github project might be interesting for you if so)?

    Either way:

    1. Yes, these datarates are easily achieveable by BLE and the nRF52 series. As Jan commented, you might be limited by the smartphone.

    2. This is no problem, for example our tutorial on testing and debugging a BLE service demonstrates a connection from our development kit to a smart phone app that we have developed.

    3. Generally latency is very low, again as Jan said, you might be limited by the smartphone.

    4. The nRF52 is a powerful MCU, as an example of computing power you can check out this recent blogpost. It is also worth noting that the nRF52 has a floating point unit, which makes it very capable.

    5. For a price estimate you will have to contact your regional sales manager, send me a personal message and I will put you in touch.

    Best regards,

    Øyvind

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