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Thread: Opus kill switch

  1. #1
    Constant Bitrate naveedh's Avatar
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    Opus kill switch

    If i install a kill switch between opus and battery, between +12v and between switched 12v , and use it, is that going to cause my opus any problem at all?

  2. #2
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    Won't cause any problem at all. I installed a switch with the center off--that way I can position the switch to the left and use an auxiliary input like a jump start battery unit, center off for valet parking, and to the right for running off of the vehicle battery.

  3. #3
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by doctorr
    Won't cause any problem at all. I installed a switch with the center off--that way I can position the switch to the left and use an auxiliary input like a jump start battery unit, center off for valet parking, and to the right for running off of the vehicle battery.
    Neet idea.
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  4. #4
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    lemme plop what im doin in here since its pretty applicable. allow me to explain the diagram. first off the PAC TR7 does the following: when voltage is applied to it (ignition voltage) it activates something. that something being the relay, which in turn sends power to the OPUS. the switch is there so you can control the ON/OFF of the computer at leisure. Now, when you turn the car off, the PAC TR7 has a timer (you set it), so that at x seconds after ignition voltage is no longer detected, it deactiveates something (again the relay). so you could set it to cut 12V power to the OPUS 2 minutes after you leave the car, leaving time for a proper shutdown and whatever. and voila no battery drain!
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  5. #5
    MySQL Error Scouse Monkey's Avatar
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    Opus kill switch? use a big hammer!

    on a more serious note, I am not sure what you want the switch to do - eg valet mode, let you turn it on when you want etc etc but what about this:

    power a relay off the Opus standby 12V line which switches the main power to the Opus so when it turns off it kills its own power. Then use some kind of relay/delay setup also wired to activate this relay for a few soconds which is activated by a momentary switch on your dash. Also connect this to the motherboard switch line (using a different pair of contacts) to turn the PC on or use a pulse relay setup on the line into the Opus (you have jsut turned on) to send a pulse to the motherboard (assuming the Opus will be in standby and can be turned on by a motherboard swtch as it is ATX standard). Also have a switch to bypass this whole setup so it acts normally. This way you should have option for completely off until button pressed or normal mode. But it is a bit complicated.

  6. #6
    Constant Bitrate naveedh's Avatar
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    I want it so that when i come to my car and i dont want to use the carputer i can just leave it off using a switch from the from the front. What is the point of a relay? i dont get it..

  7. #7
    MySQL Error Scouse Monkey's Avatar
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    iIf you want a big switch on your dash (needs to handle over 15amp) then don't use a relay but all car circuits use relays which handle the power. That way you only swithc the low power demand of the relay. Its safe that way and you mount the relay down near your fuse as you don't really want to route all your powr up to the dash were the swtich is.

  8. #8
    Constant Bitrate naveedh's Avatar
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    Thats a bit too complicated for me scouse monkey , simplify it, draw me a diagram

  9. #9
    Variable Bitrate
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    ya i am interested in this thread, keep going

  10. #10
    My Village Called 0l33l's Avatar
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    If you want the computer not to turn on, then just put a small switch on the wire going from the opus to the motherboard to the ON place.

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