couple of quesitons on wiring n power

**bigbun** · 02-11-2006, 06:37 PM

im noob at electronics so looking for a bit of advice here.

I plan to run a usb hub and dvd drive in my glove compartment, i want to use a adaptor to transform the ide into a usb. Is there any limit on this cable length of the usb? i know there is with ide so does buying one of these ide to usb eleiminate the length issue?

Also i will need to power it obviously so i will run a molex connector upto it, around 3 metres. It will need extending from the PSU (m2atx) around 3 metres
Is it possible to just buy some of this wire http://www.maplin.co.uk/module.aspx?...=6198&doy=11m2 and some molex connectors and run 4 lots of it into a connector and make a 3 metre wire? If not could someone kindly point out the best wire for me to buy to do this.

Lastly, i have a lilliput 7" touch screen. What do i need to be able to power this off my m2atx, (the molex splitter which will be run upto the glove compartment hopefully). I currenty have an adaptor which enables me to run it off my cigerete lighter cabling if this helps.

thanks very much for the help

**netmgr** · 02-11-2006, 08:00 PM

max length of USB is 5 meters

**bigbun** · 02-11-2006, 08:40 PM

ta, anyone know about which wire to buy then?

**netmgr** · 02-11-2006, 08:52 PM

yep that cable is fine, but for a better look id go for 4 core cable, im sure maplin have some
try this
http://www.maplin.co.uk/Module.aspx?...did=2&doy=12m2

regards powering your touch screen, it all depends on what the power input it takes, if its 5v or 12v then thats easy, just run it from the atx power supply, if its not those voltages you will need to run it through a converter, to alter the voltage

**bigbun** · 02-12-2006, 08:40 PM

thanks ill get some of that 4 core wire tomorrow. I think its 12v screen, could you explain how i can wire it up though cos i havnt a clue.
Currently i can either power it from 1 of them round connectors to a power plug on the wall or from the connector thru a little black box then thats conected to a relay device with 2 wires ( this 1 http://www.maplin.co.uk/Module.aspx?...SEO&U=Template) thenn theres a pos and neg wire coming out of that to connect to the cigerete lighter cabling i assume and also 2 blue ones which is the relay wire i assume ( i didnt set it up) . could you explain how i can wire it upto the wire coming out of the molex connector.

thx

**bigbun** · 02-13-2006, 05:23 AM

ok just got some cable from maplins extension seems to be working ok now just need some help wiring up the screen to it.

ta

**ramy_zohair** · 02-13-2006, 06:47 AM

maybe this will help
Xenarc 700TS / hardwire power

**bigbun** · 02-13-2006, 12:07 PM

i still dont understand how to wire it, if the 12v is red then do i connect the pos wire to the red and the neg wire to either of the black cables?

The side of the power supply says 12v 15A yellow but on the thread someone says this wa sjust for the atx connector and the molex 12v was red, how can i tell i dont have a volt meter and dont wana damage anything.

thx

**SMOKINV8** · 02-13-2006, 12:47 PM

Originally Posted by bigbun

i still dont understand how to wire it, if the 12v is red then do i connect the pos wire to the red and the neg wire to either of the black cables?

If the 12v is red, then yes.

The side of the power supply says 12v 15A yellow but on the thread someone says this wa sjust for the atx connector and the molex 12v was red, how can i tell i dont have a volt meter and dont wana damage anything.

thx

I just want to make sure I'm following you here... on the side of your power supply it says, "12v 15a yellow," and you're debating which is correct, the instructions or the guy on the internet? I'd go with the instructions/label.

The only way you can find out for sure without a meter is to pray somebody else with an M2-ATX can test it for you... or buy a meter and do it yourself.

**bigbun** · 02-13-2006, 01:00 PM

Originally Posted by SMOKINV8

If the 12v is red, then yes.

I just want to make sure I'm following you here... on the side of your power supply it says, "12v 15a yellow," and you're debating which is correct, the instructions or the guy on the internet? I'd go with the instructions/label.

The only way you can find out for sure without a meter is to pray somebody else with an M2-ATX can test it for you... or buy a meter and do it yourself.

not using a m2atx atm im actualy trying to run it inside off my atx psu indoors. Thx for the help. im just about to try it out now, also, ive got 2 blue relay wires coming off the relay device, will this effect it coming on if there not connected?