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wireless UART or USART

Discussion in 'Microcontrollers, Programming and IoT' started by max_torch, Aug 25, 2015.

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  1. max_torch

    max_torch

    98
    1
    Feb 9, 2014
    I have seen links that show how to achieve communication between two pics, or from one pic to another using UART such as this one: https://electrosome.com/uart-pic-microcontroller-mplab-xc8/
    If I can achieve this and get this to work properly, how then can I replace the wired connection between the two PICS with a wireless one? What kind of wireless should I use? Should I be using USART instead of UART so to achieve better sync? would I need two tx/rx pairs, one for clock/sync and one for data? pls help.
     
  2. max_torch

    max_torch

    98
    1
    Feb 9, 2014
    I found the solution to the problem accidentally. So although no one replied, I guess I'll just share this so that people can know:
    http://www.e-gizmo.com/KIT/UHF Ex.html
    This is exactly what I needed
     
  3. Old Steve

    Old Steve

    734
    169
    Jul 23, 2015
    I missed your original post, and only just found your second.
    Is P925.00 in Indonesian rupiah? If so, that equates to a very high price for these modules, USD$61.75 or AUD$97.79.

    I use very similar modules bought for a much lower price than that. Try eBay for APC220 modules.
    For example, the last ones I bought, (about 2 months ago), cost AUD$44.00 delivered for a pair, with antennae and USB converter for configuration, from eBay Australia:-
    http://www.ebay.com.au/itm/350905532149

    The datasheet is here:-
    http://www.generationrobots.com/media/ModuleCommunicationRadio/APC220_Datasheet.pdf

    And the configuration tool can be downloaded in .rar compressed format here:-
    http://www.dfrobot.com/image/data/TEL0005/rfmagic.rar

    Incidentally, the Dorji DRF7020-D13 module is virtually identical, with the same configuration utility.

    Edit: You'll find a little more info about their use here:-
    http://www.dfrobot.com/wiki/index.php/APC220_Radio_Data_Module(SKU:TEL0005)

    I should add - I've used them between two PIC chips and PIC to PC via USB-TTL converter with great results at a serial rate of 9600 baud and RF rate of 19200 baud to avoid overruns.
     
    Last edited: Aug 31, 2015
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