Connect with us

help to a beginner

Discussion in 'General Electronics Discussion' started by Nimda, Jun 8, 2015.

Scroll to continue with content
  1. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    Hello . I am a beginner in eletronics . i am designing a computer program . i need a circuit that can do some simple commands . can any one help me how to do it ?
    details of circuit :
    it must a simple radio transmitter that with sender i push a button and reciver gets it and do a simple command for example turn on a little dc motor .
    Thank youuu.
     
  2. Martaine2005

    Martaine2005

    2,909
    796
    May 12, 2015
    Nimda likes this.
  3. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    Hi the computer program only defines what the circuit do when it recives a special message . ( and if it is possible define the sender's message )
     
  4. Martaine2005

    Martaine2005

    2,909
    796
    May 12, 2015
    Yes, the circuit will be computer controlled.
    There is another section on this forum for programming / pic / arduino etc.
    Sit tight and somebody will help you. I however cannot. Sorry.
    Martin.
     
    Nimda likes this.
  5. Harald Kapp

    Harald Kapp Moderator Moderator

    10,220
    2,201
    Nov 17, 2011
    Where does the computer and your program come into play in this scenario?

    This is rather general and doesn't help a lot to understand your problem. Can you be more specific?
    • What kind of transmission do you need (radio or infrared)?
    • What is the maximum distance to be expected for the transmission?
    • Do you need to operate several of these transmitters independently from one another or just a single one?
    • What do you mean by "define the sender's message"?
    • On top of this: Do you need the transmission to be secure (so no one else can interrfere) or is this an uncritical path (that may be easily hacked)?

    Assuming the receiver is attached to a computer (for your program to run):
    • What kind of computer will you be using (PC, arduino, blackberry etc.)?
    • How is the receiver to be connected to the computer (serail port, control pin ...)?
    The more detail for your project you give us, the more likely you will receive a useful answer.

    Regards,
    Harald
     
    Nimda likes this.
  6. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    Thank you for your noticing. Look the whole is like this : I must have sender with some buttons that each button do something specific. When I push a button a message ( I meant can I send a message like "pull command" to a circuit and it understand?) Must be sent to the receiver ( radio signals and a range between 10 to 20 or 30 meters ) then receiver gives the message to the circuit ( mean the thing that can process commands)
    And circuit do it like turning on a dc motor.
    The connection if be secure it's better. And the thing that you said the reciver is not always connected to a pc. the circuit that process the recived commands must get the program and do it for it self. The program must be on itself and it runs it .
    Thank you so much.
     
    Last edited: Jun 8, 2015
  7. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    I searched about arduinos I think they can help is right?
     
  8. BobK

    BobK

    7,682
    1,686
    Jan 5, 2010
    If the commands are nothing more complicated than turning devices on or off, a device like the one linked in post #2 does everything you need.

    If not, you need to give us more information about what you are trying to do.

    Bob
     
    Nimda and davenn like this.
  9. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    The commands are on off changing the motor speed or direction . Turning on a device conneted to it and turn it off. Commands are in this range of simplicity. Thank you.
     
  10. Arouse1973

    Arouse1973 Adam

    5,164
    1,081
    Dec 18, 2013
    What type of connection are you going to use to control this transmitter PCB? USB, Serial port, Ethernet etc.
    Adam
     
  11. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    Do you mean for putting the program on it ? Not different.
     
  12. Arouse1973

    Arouse1973 Adam

    5,164
    1,081
    Dec 18, 2013
    You are going to use the computer to control a PCB correct? You will have to connect this PCB to the computer somehow. How will you do this?
    Adam
     
  13. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    It's not different. Usb or serial port.
     
  14. Arouse1973

    Arouse1973 Adam

    5,164
    1,081
    Dec 18, 2013
    What do you mean it's not different?
    Adam
     
  15. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    I mean that there isn't duffrenece for me. You say ehich us better.
    Ok connecting with usb port.
     
    Last edited: Jun 8, 2015
  16. Arouse1973

    Arouse1973 Adam

    5,164
    1,081
    Dec 18, 2013
    You could use a MAX232 or similar to send data to a RF module that has a built in UART. Look at the easy radio devices or something similar.
    Adam
     
  17. Minder

    Minder

    2,984
    632
    Apr 24, 2015
    I agree the MAX232 is the easiest to implement, the problem is the PC may not have a COM port available, there are USB/RS232 converters available, not all work as well.
    M.
     
    Nimda likes this.
  18. Arouse1973

    Arouse1973 Adam

    5,164
    1,081
    Dec 18, 2013
    Yes FTDI devices I have used and work very well. Unless you get a fake one that is :)
     
  19. Nimda

    Nimda

    9
    0
    Jun 8, 2015
    Thank you but can you explain more.? I am a beginner in Electronics.
     
  20. Arouse1973

    Arouse1973 Adam

    5,164
    1,081
    Dec 18, 2013
    What don't you understand? You have heard of RS232 have you? Easy Radio is a product manufactured by a company called LPRS (low power radio solutions). You need to look these things up on the internet.
    Adam
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-