Electric switch

Discussion in 'The Projects Forum' started by dennisspeaks, Jan 11, 2009.

  1. dennisspeaks

    Thread Starter New Member

    Jan 11, 2009
    1
    0
    I am working on a project for school and I have been trying to find a delay switch that will allw me to have 5 different devices *or 5 different switches) that i can time to come on at different intervals within a 13 minute time frame and they need to pe pretty close to the second, have been looking around and cant' find anything. One will go to a fog maching, another a strobe light, etc. All are AC devices.

    Anyone have any ideas? Thanks,

    Dennis
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    There are relay controller kits you can buy that are designed to be operated by a program you write on a PC. Here's one such kit:
    http://www.apogeekits.com/relay_board_remote_control_k8056.htm

    It'll be a rather difficult kit for a n00b to put together, so unless you've built a number of kits, better look for a preassembled & tested version.

    This Google search will get you about 331,000 hits: http://www.google.com/search?hl=en&q=PC+relay+controller

    Another option might be to build a standalone microcontroller-driven relay board. If your school has some Basic Stamps available, perhaps they'll let you use one of them for this project. You'll have to use relays to control the line-powered AC items, and all high-voltage connections must be in a grounded enclosure for safety.
     
  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,173
    397
    1. Do the switch on-off times vary within the 13 min. time block over a short time span or something like daily?
    2. What initiates a 13 min. period?
    3. How long are the sw. on times, greater than 13 min.?
     
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