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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
    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.

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    • #3
      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.
      TruckinMP3
      D201GLY2, DC-DC power, 3.5 inch SATA

      Yes, you should search... and Yes, It has been covered before!

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      • #4
        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!
        Attached Files

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        • #5
          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.

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          • #6
            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..

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            • #7
              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.

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              • #8
                Thats a bit too complicated for me scouse monkey , simplify it, draw me a diagram

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                • #9
                  ya i am interested in this thread, keep going
                  My BMW 2004 330i

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                  • #10
                    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.
                    PowerVoice v1 | NaviVoice Source
                    GammaControl v2.4
                    SKINbedder v3

                    1995 Lexus SC300

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                    • #11
                      ok, what switch would i need, a push to make switch? maybe. So how would i wire the switch using 2 pins they have?

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                      • #12
                        Originally posted by naveedh
                        ok, what switch would i need, a push to make switch? maybe. So how would i wire the switch using 2 pins they have?
                        Put a switch (NOT a momentary one) on one wire of the two pins (cut the wire in 1/2 and connect both points to the switch). If the switch is in the ON position then the computer will receive all of the startup/shutdown commands. If its off, it won't receive any
                        PowerVoice v1 | NaviVoice Source
                        GammaControl v2.4
                        SKINbedder v3

                        1995 Lexus SC300

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                        • #13
                          ok what you mean by a non momentary switch. e.g. i have a oem switch in my car which has 4 pins underneath it and you push the switch down it moves down from one side and raises from the other. So is this switch alright?

                          Its a bit like this

                          http://www.chu.cam.ac.uk/~JRS47/switch.jpg

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                          • #14
                            Originally posted by naveedh
                            ok what you mean by a non momentary switch. e.g. i have a oem switch in my car which has 4 pins underneath it and you push the switch down it moves down from one side and raises from the other. So is this switch alright?

                            Its a bit like this

                            http://www.chu.cam.ac.uk/~JRS47/switch.jpg
                            Exactly
                            PowerVoice v1 | NaviVoice Source
                            GammaControl v2.4
                            SKINbedder v3

                            1995 Lexus SC300

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                            • #15
                              How do i make use of all four pins? Jsut draw lines like that and label and i should be all set.

                              I I
                              I I

                              Also isnt that going to confuse the opus when it tries to turn the pc on and what will the opus do when i switch the ignition on?

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