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Want guidance for choose best UART or USART RF module for Arduino

Discussion in 'Microcontrollers, Programming and IoT' started by Hamid Zajkani, Mar 31, 2017.

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  1. Hamid Zajkani

    Hamid Zajkani

    6
    0
    Feb 18, 2017
    hello every body , I want to create a Star or Mesh network with arduino like image below :
    the distance node between master is about 2 km.
    I want to create full duplex communication , send sensor information from nodes to master node , that master node reply to each one.
    witch kind of RF module is best for my solution ?
    my RF module must be UART or USART , Cause of I cant use SPI Protocol , because I use SD card that use SPI Protocol.

    [​IMG]
     
  2. Arouse1973

    Arouse1973 Adam

    5,164
    1,080
    Dec 18, 2013
    You first need to tell us the ISM bands in your country. In know 2.4 GHz is a global band but I think you will struggle to get 2 Km with the currently available modules out there, I might be wrong though.
    Adam
     
    Hamid Zajkani likes this.
  3. Hamid Zajkani

    Hamid Zajkani

    6
    0
    Feb 18, 2017
    like global ISM
     
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