what is the easist way delay my switch 12v for 2 seconds??? - Page 2

bertybassett · 04-24-2005, 11:23 AM

the strange thing is the carputer works fine in doors off a 12v supply to the M1-ATX power supply. I simulate the ignition wire and boom out of stnad by it comes every time.

Must be either battery, what ele can it be?

bertybassett · 04-24-2005, 12:14 PM

Also noticed if I trun the ignition key to the power on mode the car stero comes on and the carputer will come out of standy by every time but if I try and crank the enigne the carPC will reset, strange no.

I'm really starting to supect the battery now.

bertybassett · 04-24-2005, 12:33 PM

just tested cranking with a battery charger connected the battery i know that dangerous but it's done now) and every time the carputer would survive cracking and come out of stand by fine.

So in short I need a new battery. Ouch that's at least £150.

bertybassett · 04-24-2005, 12:34 PM

BTW thanx to everyone who inputted help into this thread much appreciated, even if you didn't have the answer.

shakes · 04-24-2005, 03:35 PM

give hibernate a try again.

standby requires constant power to keep the ram powered so you don't loose any data. hibernation writes what's in RAM to the hard disk so you can completely remove power.

i'm thinking 1 of 2 things are happening.

1. it's possible you don't have the 1260 or m1-atx set up properly, and they are cutting power to the PC a few minutes after you turn the car off. thereby killing power to the ram, thereby loosing your data, thereby causing the pc to reboot when it can't pull itself out of standby.

2. if the 1260 and/or m1-atx ARE configured to operate in standby and keep power to the PC ... there's a good change 4 hours of supplying power to your PC is draining your batter enough that when you crank it after 4 hours it dips below 7.5v.

Either way, Hibernate (or full shutdown) should solve both of these problems and is a good bit cheaper than a new battery.

kungmpton · 04-25-2005, 11:01 AM

Quote: Originally Posted by bertybassett

I need this so my carputer can survive cracking. For about a year my carputer would boot fine, then of late I noticed it would not boot correctly every time. It would sometimes reset while coming out of standy by cuasing a full reboot of the system instead of returning from stand-by.

To fix this problem I changed the power supply from a Carntix P1260 to a M1-ITX and still I was having no joy. I've re-wired the whole issue still no success. Now I'm thinking that the battery might need replacing but the cost of a deep cycle battery is well over £175 so before I shell out that much cash I want to try everything else. I was thinking of adding a 2 seconds delay on the ignition wire, which might help. Do'es anyone have any ideas on how best to go about achieving this?

Here:

http://www.kemo-electronic.de/en/bau...b042/index.htm