Electronics What lines in the serial port

Discussion in 'Modding' started by Phire, 19 Sep 2002.

  1. Phire

    Phire Performance-PCs.com

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    Which pins on the serial port carry the 5v line? Like I wanna wire a 3 pin vfd display to a serial port and use a serial to usb adaptor to clean things up......

    If the serial doesnt have a 5v line and gnd then how could I utilize the 5v on the usb and the data lines with a serial display?


    Thanks!


    -D
     
    Phire, 19 Sep 2002
    #1
  2. Drastik

    Drastik What's a Dremel?

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    i dont think there is a +5volt in serial if tehre is i am sure it cant handle it because my usb porn cant handle my bg micro vfd
     
    Drastik, 20 Sep 2002
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  3. Phire

    Phire Performance-PCs.com

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    really? I heard that the usb could handle the vfd......somehting like it draws 700ma max and the port gives off 500ma but it still works.....:(
     
    Phire, 20 Sep 2002
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  4. Meblin

    Meblin Supposed IR God!

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    The ground is pin 5 and the voltage supply is pin 1 (think it's 5V)

    Meblin
     
    Meblin, 20 Sep 2002
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  5. Drastik

    Drastik What's a Dremel?

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    well like u said it handle 500 but the lcd oulls 700 and it blew my usb header
     
    Drastik, 20 Sep 2002
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  6. AmPz

    AmPz What's a Dremel?

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    Meblin: Wrong.
    Ground is pin 5, but there is NO supply pin on the serial port.
     
    AmPz, 20 Sep 2002
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  7. Meblin

    Meblin Supposed IR God!

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    OOPPSSS :lol:

    Code:
    Name        25-pin         9-pin
---------------------------------------------------------
TxD           2             3       transmit data
RxD           3             2       receive data
RTS           4             7       request to send (here: power source)
CTS           5             8       clear to send
DSR           6             6       data set ready
GND           7             5       ground
DCD           8             1       data carrier detect (here: signal line)
DTR          20             4       data terminal ready
    There you go :)

    Meblin
     
    Meblin, 20 Sep 2002
    #7
  8. FuzzyOne

    FuzzyOne ⎃

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    Ive got my Winamp box powered off the serial port but I can't remeber what pins tho.



    [​IMG]
     
    FuzzyOne, 20 Sep 2002
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  9. x24

    x24 What's a Dremel?

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    Seconding the motion, pin7 is +5v.

    Meblin, the IR receiver worked :D
     
    x24, 20 Sep 2002
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  10. AmPz

    AmPz What's a Dremel?

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    There is NO +5V power supply line at all in the serial port! Gee...

    Some devices abuse the signal lines for power (about 10V, can deliver 1-5mA)
     
    AmPz, 20 Sep 2002
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  11. cpemma

    cpemma Ecky thump

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    AmPZ is quite right. See here
    Same goes for the parallel port. :nono:
     
    cpemma, 20 Sep 2002
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