serial port control relay

+ Reply to Thread
Results 1 to 3 of 3
  1. #1
    win_832001's Avatar
    win_832001 Guest

    Default serial port control relay

    hello thee ..i juxz wanna to ask some question about the serial programming. if there possible to contol the12VDC relay through serial port without using the microcontroller. if possible can some one help me with give the interfacing circuit between the serial port and the relay.

    with that tq

  2. #2
    Join Date
    Aug 2005

    Did you find this post helpful? Yes | No

    Question Wha...?

    I think that every question deserves an answer but I cannot for the life of me figure out what this guy is talking about.

  3. #3
    Join Date
    Jun 2006
    Mountain View California

    Did you find this post helpful? Yes | No

    Default Driving a Relay with the Serial Port

    You can toggle the DTR signal on and off.
    For details see the following link.


Similar Threads

  1. interfacing to the pc serial port
    By kelangfei in forum General
    Replies: 4
    Last Post: - 7th October 2007, 22:35
  2. How to set TMRO & TMR3 as Counter?.
    By NatureTech in forum mel PIC BASIC Pro
    Replies: 21
    Last Post: - 18th May 2007, 08:52
  3. Serial Relays
    By tazntex in forum General
    Replies: 3
    Last Post: - 17th May 2007, 17:42
  4. Microcontroller with 2 way paging application problem
    By oneohthree in forum mel PIC BASIC Pro
    Replies: 30
    Last Post: - 20th April 2007, 17:27
  5. Replies: 2
    Last Post: - 28th April 2006, 12:10

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts