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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

    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.

  2. Arouse1973

    Arouse1973 Adam

    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.
    Hamid Zajkani likes this.
  3. Hamid Zajkani

    Hamid Zajkani

    Feb 18, 2017
    like global ISM
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