use current from a FW port to power a USB hub??
use current from a FW port to power a USB hub?? Posted on: 03.11.2009 by Chau Honrado This is a slightly bizzare question,my macbook only has two usb ports, which is not enough for my dj needs with t scratch pro, but in order to have more USB ports i need a hub, which would need to be powered, BUT when i turn up at a venue i only want to plug in the power supply for my laptop, SO what is the believeing on whether, with a little crafty soldering, i could make use of the currently unused FW port on my laptop to power a USB hub so i can add more control options? thanks all! | |
| Chau Honrado 03.11.2009 |
Originally Posted by janzak
but on a macbook, pins 1 (live) and 2 (gnd) on a firewire port, output unregulated between 9V and 13V with the max load you can draw from that being <1A USB hubs tend to require a regulated 5V supply, so using the above regulator to stabalise and limit the voltage, i can make a powersource for my usb hub fed by my FW port (or at least thats the plan) |
| Chau Honrado 03.11.2009 |
Originally Posted by midifidler
something like this? www.maplin.co.uk/Module.aspx?ModuleNo=7937&C=SO&U=strat15 many thanks! |
| Laraine Arceo 03.11.2009 |
Originally Posted by midifidler
|
| Chau Honrado 03.11.2009 | This is a slightly bizzare question, my macbook only has two usb ports, which is not enough for my dj needs with t scratch pro, but in order to have more USB ports i need a hub, which would need to be powered, BUT when i turn up at a venue i only want to plug in the power supply for my laptop, SO what is the believeing on whether, with a little crafty soldering, i could make use of the currently unused FW port on my laptop to power a USB hub so i can add more control options? thanks all! |
| Mathew Meins 04.11.2009 | Man! midifidler, you should firewire-to-usb power cords for the DJTT store! |
| Adolf Hit 04.11.2009 | Correct - tbh cannot believe there is an existing product allready out there which can do this. Came up with that idea while highly baked about a month ago |
| Chau Honrado 03.11.2009 |
Originally Posted by janzak
but on a macbook, pins 1 (live) and 2 (gnd) on a firewire port, output unregulated between 9V and 13V with the max load you can draw from that being <1A USB hubs tend to require a regulated 5V supply, so using the above regulator to stabalise and limit the voltage, i can make a powersource for my usb hub fed by my FW port (or at least thats the plan) |
| Chau Honrado 03.11.2009 |
Originally Posted by midifidler
something like this? www.maplin.co.uk/Module.aspx?ModuleNo=7937&C=SO&U=strat15 many thanks! |
| Laraine Arceo 03.11.2009 |
Originally Posted by midifidler
|
| Adolf Hit 03.11.2009 | You would need to put a 5 volt reg in between the 12.8 V that the firewire puts out and the power supply input to your hub but yeah firewire can supply enough curren 8 full power usb ports. |
<< Back to Reviews of DJ equipment Reply