Shop OBEX P1 Docs P2 Docs Learn Events
ink pc to Parallax Servo Controller (Serial) — Parallax Forums

ink pc to Parallax Servo Controller (Serial)

stepschstepsch Posts: 5
edited 2007-03-20 17:08 in Robotics
Hello,
·I have a new Parallax Servo Controller (Serial). Is it possible to connect the pc serial port 232(rx and tx) to a pin serial I/O of my Parallax Servo Controller? With a max232 ? Have you a shematic or document how explains to do that ?·
Thank for advance. Stéphane Schittek.
·

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2007-03-16 14:42
    Apparently Parallax will be posting some schematics in the next few days for this. Have a look at this thread: http://forums.parallax.com/showthread.php?p=638357
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-03-16 17:10
    Please check the Completed Projects Forum late Sunday (I will be posting these through the day on Saturday). Take care.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
  • stepschstepsch Posts: 5
    edited 2007-03-20 15:17
    I tested a diagram which functions very well. See the diagram joint.

    Stephan S.
    max232-PSC-Parallax.jpg
    1024 x 768 - 79K
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-03-20 16:22
    The following attachment is the schematic that will be posted to the forums...

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
    bmp
    bmp
    PC to PSC.bmp
    226K
  • stepschstepsch Posts: 5
    edited 2007-03-20 16:36
    Thank you very much Chris.

    St
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-03-20 17:01
    stepsch said...
    I tested a diagram which functions very well. See the diagram joint.
    Stephan S.
    Hello,

    ·· The problem I see with your schematic is that when the Servo Controller is sending data back it is fighting against the output driver going into it from the MAX232 pin 12, which is not a good idea.· You should never have an output directly connected to another output without being able to disable it or having a resistor in there for current protection.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
  • stepschstepsch Posts: 5
    edited 2007-03-20 17:08
    Absolutely. My diagram is bad.

    Stephan S
Sign In or Register to comment.