A different way to Auto – Power – On your lilliput

**kingtut** · 05-01-2005, 02:42 AM

Thanks man, this more than I have hoped for. Cristal clear. Hats off.

Arathranar: I have an 8" Lil, I can't do the coyote hack, it is not an option, I know some folks here did it for the 8", but I'll not take a chance, cutting a resistor is risk, using or connecting a cap the wrong way could screw the screen. intense's way could be applied easly to any device, not just the Lil also, it keeps the electronic mess out of the device, if you screw any thing, it would be limited to 5 bucks worth of parts. One more thing, with this option you don't have to remove the screen and disconnect the PITA thin connector and make sure it is pluged on the left side since the cable has less wires than the actual connectors, go back and read all related postes, all the problems people have are related to reconnecting the screen to the controler while intense's way leaves the screen alone since the button PCB is stand alone. Jusct my 2 C

**intense** · 05-01-2005, 02:45 AM

Blue ZX3 - I think you might have a newer revision of the lilliput that doesn't require the auto-power-on modification. Some of the newer revisions supposedly turn on themselves when power is applied.

**Blue ZX3** · 05-01-2005, 02:50 AM

SO...there are diff versions of this screen...maybe I have the newer version...

If anyone reading this tread, is an electronics junkie, then my thought on why this does this would be that maybe they used a flip-flop circuit for the power button...

Actually...anyone with some skill could add this too...all it would take is a single chip..cause the chip stays in the same state on matter how matter how many you power it on/off...

**Blue ZX3** · 05-01-2005, 02:52 AM

I doesn't always power on everytime it gets powered up...it just returns to the previous state...

**Blue ZX3** · 05-01-2005, 03:00 AM

which is nice cause I have my bios set to wake up every day in the morning and then I have a sync prog run on my desktop to update any music that i added to my collection...then after the idle time has expired the car goes back into standby...anyway...

The only time I turn off my screen is at night so that when it comes on in the morning it doesn't require as much power for a srceen that hopefully no one is looking at...LOL

**Arathranar** · 05-01-2005, 03:26 AM

Originally Posted by kingtut

One more thing, with this option you don't have to remove the screen and disconnect the PITA thin connector and make sure it is pluged on the left side since the cable has less wires than the actual connectors, go back and read all related postes, all the problems people have are related to reconnecting the screen to the controler while intense's way leaves the screen alone since the button PCB is stand alone. Jusct my 2 C

Perhaps that's all I did. Maybe I'll check for that. But the cable I had to disconnect / reconnect after was the one to the button PCB and as far I recall you'd still have to disconnect that to do this external mod.

But I can certainly see the advantage of the electrical isolation a (properly connected) relay can give.

**intense** · 05-01-2005, 03:27 AM

no prob kingtut, let me know how it works if you get it running before I do LOL.

**Arathranar** · 05-01-2005, 03:58 PM

Originally Posted by Arathranar

Perhaps that's all I did. Maybe I'll check for that. But the cable I had to disconnect / reconnect after was the one to the button PCB and as far I recall you'd still have to disconnect that to do this external mod.
But I can certainly see the advantage of the electrical isolation a (properly connected) relay can give.

It was just the ribbon cable being off by one.

. Thanks for reminding me - I couldn't find any posts describing it in detail (the FAQ was cleaned up and I think that's where it was described well). So I just opened it up and tried it in different positions.

**intense** · 05-03-2005, 11:52 PM

so I had a chance to play around with this circuit. If you are planning running this set-up I would recommend a capacitor between the values of 4k - 5k uf. This will simulate a 2 second button press. 1k uf wont hold down the button long enough. I will change the diagrams later. I also think the resistor value might change. but it works fine with 10k.

**Arathranar** · 05-04-2005, 02:21 AM

Why do you need to simulate a 2 second button press? That's way longer than a real button press is and that itself is way longer than it actually needs to be to trigger the power on. Anyway, the 100 uF and the existing 10k resistor is working peachy for me