Well I have been planning this for quite a while now. I looked at various options including double din computers with integrated touch screens, but I soon eliminated these as the CPU's used in them are quite dated now and I also wanted a "proper" computer for the car.
So in the end I went for a small form factor pc with a reasonable touch screen. All in all I think this came to about £400 which is less that half the 2 din units....
Components:
PC - Acer Revo (4 Gb Ram, Dual core CPU can't remember the spec now, 500Gb HDD, integrated Wifi, 1 Gb net port, and 6 USB ports) (Link)
Screen - LinITX 8" 4:3 VGA/Composite Monitor with Touchscreen (Link)
PSU - DCDC-USB Intelligent DC-DC Converter with USB Interface (Link)
GPS Receiver - GPS Receiver+ Antenna 4 Laptop PC USB Car Google Map G2 (Link)
So the reason for the PSU is that the Revo is essentially a home computer without the intelligence to start up and shut down on the ignition on or off. Also I needed a PSU to convert the 12v to the 19V required by the Revo. As a bonus it also has a switched 12V for the screen. One of the nice things about this psu is that you can set both what output voltage you want and also what time delay you need once the ignition goes off with jumpers. You can actually also program it via the USB port, but I did not need this. his is really a impressive bit of kit.
Ok so first things first. I needed to modify the Revo so that it could be remotely triggered for power on and hibernate. This involved opening it up and soldering a pair of wired to the on/off switch. It does mean I have invalidated my warrantee, but so be it:
Couple of pics:
Revo open with the wire that will go to the PSU:
Small PC board with the on/off switch also showing the soldered wires (sorry about the focus on this one):
Next I needed to mount the PSU into a small box. Got this from my second home (Maplin):
At this point I also found a old Lenovo laptop psu and used the power connector which fits the Revo. Made all the cables, including the one for triggering the Revo (its the one connected close to the fuse). The other one is for the screen. The connector on the left is 12V, gnd and ign in and the connector on the right is 18V switched out for the Revo.
All assembled and bench tested to insure that it works:
Finally installed it in LB, by mounting the PC on the wooden partition behind the drivers seat:
And the screen I bolted to the dash... meant 4 more holes, but I figured that LB will never be a shiny showroom vehicle again
So I have a little bit of tiding up to do as far as the cables are concerned, but overall I am really happy with it. Future enhancements:
So in the end I went for a small form factor pc with a reasonable touch screen. All in all I think this came to about £400 which is less that half the 2 din units....
Components:
PC - Acer Revo (4 Gb Ram, Dual core CPU can't remember the spec now, 500Gb HDD, integrated Wifi, 1 Gb net port, and 6 USB ports) (Link)
Screen - LinITX 8" 4:3 VGA/Composite Monitor with Touchscreen (Link)
PSU - DCDC-USB Intelligent DC-DC Converter with USB Interface (Link)
GPS Receiver - GPS Receiver+ Antenna 4 Laptop PC USB Car Google Map G2 (Link)
So the reason for the PSU is that the Revo is essentially a home computer without the intelligence to start up and shut down on the ignition on or off. Also I needed a PSU to convert the 12v to the 19V required by the Revo. As a bonus it also has a switched 12V for the screen. One of the nice things about this psu is that you can set both what output voltage you want and also what time delay you need once the ignition goes off with jumpers. You can actually also program it via the USB port, but I did not need this. his is really a impressive bit of kit.
Ok so first things first. I needed to modify the Revo so that it could be remotely triggered for power on and hibernate. This involved opening it up and soldering a pair of wired to the on/off switch. It does mean I have invalidated my warrantee, but so be it:
Couple of pics:
Revo open with the wire that will go to the PSU:
Small PC board with the on/off switch also showing the soldered wires (sorry about the focus on this one):
Next I needed to mount the PSU into a small box. Got this from my second home (Maplin):
At this point I also found a old Lenovo laptop psu and used the power connector which fits the Revo. Made all the cables, including the one for triggering the Revo (its the one connected close to the fuse). The other one is for the screen. The connector on the left is 12V, gnd and ign in and the connector on the right is 18V switched out for the Revo.
All assembled and bench tested to insure that it works:
Finally installed it in LB, by mounting the PC on the wooden partition behind the drivers seat:
And the screen I bolted to the dash... meant 4 more holes, but I figured that LB will never be a shiny showroom vehicle again

So I have a little bit of tiding up to do as far as the cables are concerned, but overall I am really happy with it. Future enhancements:
- Get the Bluetooth to work so that I can use it for phone calls
- Get a USB radio interface
- Get a external amp so that I can connect it to the car speakers, and thereby eliminate the car radio.
- Get Carfusion to work which will be the user interface.