Timed Delay Signal Output

Discussion in 'The Projects Forum' started by The Great NY, Nov 21, 2009.

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  1. The Great NY

    Thread Starter New Member

    Nov 21, 2009
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    hi, as you can probably see from my post count i am very new here. I have been browsing this forum all day and you guys are outstanding.

    Im a mechanic and am very knowledgeable about basic electrical issues. but when it comes to electronics, im not the sharpest knife in the bunch.

    anyway, i have a project that im working on for my car. I am trying to make something that will automatically Turn-off my TCS (traction control) when i start the car, but after the initial function allow regular use of the factory switch.

    here is a schematic of the TCS button
    [​IMG]

    the button itself is a Momentary switch which basically completes the circuit to send a trigger and opens once released. from the looks of the schematic its very simple, looks like it triggers by a ground, correct?

    What i need is something that will take the signal(12v i believe) going into the switch, take it and delay it for 10 seconds, then pass it to the the other wire. which should in turn switch off my TCS. but i will need it to shut off after the initial so the button can be used normally.

    I read that the 555 timer has something called "one shot pulse" i went to radio shack and brought the 555 timer chip, and some resistors and capacitors.

    but i am honestly unsure which ones to use and how to hook them up. do i need a board or something? or is just connecting them all via 22ga wire feasible?

    any info would be outstanding, i want to ask for an actual schematic on how to hook it up, but i think that would be asking for too much being a newb. so if you can tell me what parts to get to setup up a 10second delay to output a "one shot pulse" it would be greatly appreciated.

    THank you very much for your time.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    I would really like to help you with this, but I feel that would violate the Forum rules (safety, property damage).

    Any modification of the braking controls of your vehicle would require extensive testing, and would require certification before implementation.

    We simply do not have the capability nor funding to do that extensive testing, nor could the Board nor you absorb the liability costs should you become involved in a tragic accident.

    I'm sorry, but this topic is beyond the scope of the Forums.

    I am recommending to the Staff that it be closed due to the hazards involved in your project.

    I'm genuinely sorry, but it is in your best interests - and this Forums' interests as well.
     
  3. The Great NY

    Thread Starter New Member

    Nov 21, 2009
    2
    0
    i can turn it off when i start the car by pressing the factory button, i just want it to turn off by itself when i start the car.

    there really isnt any testing needed. i just want to build a simple circuit that does the first press of the button so to speak, 10 seconds after i start the car.

    ok, how bout this, i need a delayed power circuit that turns on an LED after 10 seconds, lol

    im just messing... but it really that big of an issue? i dont see a liability issue at all considering it can be turned off anyway

    also the site wouldnt be funding anything.

    10 second delay then send out put. then shutdown after 1 second pulse
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    I have to agree with SgtWookie on this one - there is a potential for harm here. We reach a wider audience than one member on any subject. The code states:
     
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