MP3Car.com - View Single Post - Dell SX260 and SX270 power supply solution

ivanmx6 · 08-10-2007, 04:50 AM

PM'd (and copied in below for all to benefit from if needed). But yes, that's right.

Quote: Originally Posted by MAZDABOY

Hey man, I've read a lot of your posts about your car-pc. How well is it working out? I need some help if you could.
I am going to use the following:
panasonic 7" in-dash
alpine cda-7995
dell sx260 pc

I'm looking into the dsx12v for a regulator right now, woudl that be everyhing I need? (if i changed mb's down teh line would this still work?)

Does it come with startup/shutdown features?

Basically, how I want things to work are. I want the pc to boot up after I start the car (on it's own & delayed for a few seconds). I want it to shut down after the key is removed. So if I turn off the car but leave the key on, the pc will stay on.
Then I want to have a complete kill switch in my glove box to where if it's off the pc will not go on at all. (for short drives or just to turn the key on to play with a radio setting for a second or whatever)
Where would the kill switch go, on teh relay? Ground side?
Would the dsx12v suit all my needs? Also, how do you like the gps? I have the same antenna, where can I find the software?

I really appreciate the help. I would like to order the power supply asap and try to get this whole project done in less than 2 weeks.

Sounds like the DSX12VD would be better for you than the DSX12V to be honest.

The 12V is a straight 12v-12v regulator whereas the 12VD has the startup and shutdown features you want. To get the startup and shutdown you will need to solder 2 small wires to the PC on/off switch so it can provide the pulses to the PSU.
Check the grey wires in the first pic. They should go to the PC on/off switch but I decided not to use them.

It'll be fine on other mobos too.

If you want the supply to remain on with the key turned, remember to take the power for the relay from the cars Ign circuit rather than straight from the battery. The kill switch can go there too.
The main 12v feed through the relay to the PSU can come straight from the battery (via a fuse obviously).

So wire the power the same as the second pic above. The yellow feed to the relay would be from your Ign circuit.

And the Carputer's still going great thanks. I settled on the cheapest commercial version of Centrafuse in the end because I already had Destinator to go with it. David's still got a few more things to do but hopefully there'll be an update with these enhancements in soon.

GPS and wireless work great too apart from the GPS doesn't like coming back from hibernation all the time. That's mostly a Dell problem I think though - it's fine from a cold boot.

08-10-2007, 04:50 AM	#6
ivanmx6 Constant Bitrate Join Date: Dec 2006 Location: Dorset, UK Posts: 176	PM'd (and copied in below for all to benefit from if needed). But yes, that's right. Quote: Originally Posted by MAZDABOY Hey man, I've read a lot of your posts about your car-pc. How well is it working out? I need some help if you could. I am going to use the following: panasonic 7" in-dash alpine cda-7995 dell sx260 pc I'm looking into the dsx12v for a regulator right now, woudl that be everyhing I need? (if i changed mb's down teh line would this still work?) Does it come with startup/shutdown features? Basically, how I want things to work are. I want the pc to boot up after I start the car (on it's own & delayed for a few seconds). I want it to shut down after the key is removed. So if I turn off the car but leave the key on, the pc will stay on. Then I want to have a complete kill switch in my glove box to where if it's off the pc will not go on at all. (for short drives or just to turn the key on to play with a radio setting for a second or whatever) Where would the kill switch go, on teh relay? Ground side? Would the dsx12v suit all my needs? Also, how do you like the gps? I have the same antenna, where can I find the software? I really appreciate the help. I would like to order the power supply asap and try to get this whole project done in less than 2 weeks. Sounds like the DSX12VD would be better for you than the DSX12V to be honest. The 12V is a straight 12v-12v regulator whereas the 12VD has the startup and shutdown features you want. To get the startup and shutdown you will need to solder 2 small wires to the PC on/off switch so it can provide the pulses to the PSU. Check the grey wires in the first pic. They should go to the PC on/off switch but I decided not to use them. It'll be fine on other mobos too. If you want the supply to remain on with the key turned, remember to take the power for the relay from the cars Ign circuit rather than straight from the battery. The kill switch can go there too. The main 12v feed through the relay to the PSU can come straight from the battery (via a fuse obviously). So wire the power the same as the second pic above. The yellow feed to the relay would be from your Ign circuit. And the Carputer's still going great thanks. I settled on the cheapest commercial version of Centrafuse in the end because I already had Destinator to go with it. David's still got a few more things to do but hopefully there'll be an update with these enhancements in soon. GPS and wireless work great too apart from the GPS doesn't like coming back from hibernation all the time. That's mostly a Dell problem I think though - it's fine from a cold boot.