Matrix relay rs232 control

Discussion in 'The Projects Forum' started by jismagic, Sep 7, 2013.

  1. jismagic

    Thread Starter Member

    Sep 7, 2013
    Hey guys

    Any one know of 4*32 point relay switch which can be controlled from my computer.

    I am looking for a cheap solution.. Not interested in PCI,PXI solutions

    thanks in advance,
  2. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    If "cheap" is a hard requirement I suggest going to EBay and search around for "relay rs232".

    Last time I was looking for a cheapie PC controlled relay board I found they came into two broad categories: signal relay that switch 1A max, and power that do 5 or 10 or more amps.
  3. DickCappels


    Aug 21, 2008
    What do you want to do with it?

    There may be other ways of getting what you want. For example: you can use a lot of analog multiplexer chips to make one. There are analog crosspoint chips that are expandable to the 4 * 32 (don't remember who make 'em but the exist).
  4. jismagic

    Thread Starter Member

    Sep 7, 2013
    thanks for the reply..

    * i want to control the relays based on my computer program.
    To be specific : i want to generate binary logic to control the relays.
    For eg:
    0000 : all relays open..
    0001 : Relay 0 closed
    0010 : Relay 1 closed
    0011 : Relay 0 and 1 closed
    and so on...

    thanks again,