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How to Sync Parallax 433 MHz RF Receiver and trasnmitter? — Parallax Forums

How to Sync Parallax 433 MHz RF Receiver and trasnmitter?

PapoPapo Posts: 1
edited 2008-01-16 16:04 in General Discussion
I am trying to build a project that can transmit an array[noparse][[/noparse]40]· characters using a Parallax 433 MHz RF Receiver· and a transmitter.· I am not able to sync them, therefore I can not have them to communicate.· I am using the HC12 motorola microprocessor to create this project.

Are there any ideas on how to sync them using C?· thanks a lot for your help.

Comments

  • stampedstamped Posts: 68
    edited 2008-01-16 09:23
    Papo, this thread is in the wrong place. Someone might want to move it to the relevant category.

    See my thread on the 433mhz units here: http://forums.parallax.com/showthread.php?p=698747

    I am currently working on how to Synch the units. I have not yet been successful. I am thinking of using an ADC on the RSSI pin to check the voltage. There is a change when data is received whereas it sits stable when it is getting basic interference.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2008-01-16 15:34
    This thread is being moved from the Completed Projects Forum to the Sandbox Forum.

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    Chris Savage
    Parallax Tech Support
  • BeanBean Posts: 8,129
    edited 2008-01-16 16:04
    Here is the PBASIC and SX/B Parallax code to transmit and receive packets using the 433 MHz radios.

    I have successfully used this code, so let me know if you have any questions.

    Bean.




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    www.iElectronicDesigns.com



    Post Edited (Bean (Hitt Consulting)) : 1/16/2008 5:47:39 PM GMT
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