MaddSkillz

Hi all,

Is it not possible to use the 2-pin cable that is used for the "power on/off pins on the motherboard" from the OPUS DC-DC power supply to turn on the Lilliput?... What you should do is strip one end of the 2-pin cable that would normally plug into the motherboard, and solder them to both ends of the POWER button on the lilliput's button control panel. (see picture)

Now, to power on your computer without the power button, what I normally do is set up "AC LOSS AUTO RESTART" in the BIOS. This way, once the car starts... the opus is powered up.... starts the computer.... sends a signal to the lilliput to start up as well via the 2-pin cable....

BTW i am powering my lilliput via the opus molex connector.

Does this sound like a good solution?

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Laidback

Yes, but not all sys boards have the option for "AC LOSS AUTO RESTART" in the BIOS.

How do you shut the computer down? (Which is the main reason people want a start up/shut down controller)

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Litespeed

Just do the Coyote auto-on mod. I did that and I'm running mine off the Opus. It turns on when the Opus kicks the computer on and off when it shuts it down. Can't ask for much more...

Laidback

I want mine to come on when windows is up, not before..

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SFiorito

I was going to have my lilly auto startup, but since i wanted a switch to turn on and off I just soldered a small switch (from radio shack) to the connections on the button board of the lilly. that way i'll have a power switch on my dash for my screen. it'll won't auto on, but that's not a big deal for me. i run the lilly off the 12v from the opus using a molex connector i attached to the car adaptor. works great so far. i wouldn't recommend it unless you've done some soldering before (i did very little, but figured "What the hell" and did it anyway. could've been a close call though since my iron is too hot for this kind of job).

As far as the computer auto turning on: since the opus sends the turn on signal i don't think the bios option really matters. i'll also be putting a switch on the ACC line to the opus so i can keep it from autostarting or turn it off/on at will.

asci01

I think this is a great idea for those of us that are afraid of screwing up while implementing coyote's solution. Now I wonder if you can split the cable and use it to turn on both the lilliput and the computer?

MaddSkillz

Yeah, well the main reason I came up with this idea was because I didn't wanna fudge up my lilli from coyote's mod... with all the soldering/desoldering..... i dunno... not worth the risk...

The only one problem I might see happening is about the power. Since I am powering the lilliput from a molex connector on the opus as someone mentioned above, what event occurs FIRST: the lilliput being applied the power?.... or the 2-pin cable switching the lilliput ON?... if it's the latter then this might cause a problem because it would simulate pressing the POWER BUTTON when the screen was OFF to begin with....

Anyone try this yet?

Laidback

The 2-pin cable goes first, that's what switches the psu on

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MaddSkillz

But if I change the BIOS settings on my M10000 mobo to "AC LOSS AUTO RESTART", that means as soon as the opus has power, the computer will boot up... so wouldn't that happen a second or soe before the 2-pin cable activates the switch... since the opus does have to power on first?

Confused

Nope, it won't work like that.

The Opus always has "power", as you have permanent 12V to it at all times. When you switch on the "IGN" line on the Opus, it senses that the pin has gone high for more than 5 seconds, then it sends a pulse to the motherboard, and the motherboard turns on the main supply from the Opus.

You *may* be able to have some luck with the following:
(Link)



The capacitor allows the coil of the relay to be energized until the capacitor stores a charge, thus de-energizing the coil. The resistor bleeds off the charge of the capacitor when positive voltage is removed from the other side of the coil. You can increase the output time by simply changing the value of the capacitor. This one will give you about a 1/2 second output.


Hook up the red to the battery, pink to the 12v output from the Opus (from one of the HDD molex connectors), and the purple to the power button of the screen (onto the coil of another relay if you need to make a the connection that the button on the screen normally makes, rather than send 12v into the screen )

This is just an idea, i'm not sure if it will work, and i take no responsibility. Of course, check everything before you hook it up to sensitive equipment!


Garry

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MaddSkillz

sounds a bit complicated....

Okay how about if I SHORT the power button on the lilliput.... that way it'll be like pressing down the power button all the time. So, once the opus powers up the MOLEX connectors, the screen will come on right away. Will this in anyhow damage my lilliput in any way?

Laidback

You need to search! It's all been done before. I haven't tried it but others have and I haven't heard of anybody saying it causes damage. The other buttons will not work but you can use the remote instead.

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