Possum
Posts: 23
Joined: Thu Mar 22, 2012 2:32 pm
Contact: Website

Power Supply

Mon Jun 16, 2014 4:50 am

Hi

I want to build RP into an router so I can have a low power (green) always on Torrent server. I don't like the idea of having 2 wall wart power supplies. Is there a way to get only one power supply and power Both my RP and the router.


Thank you..

ame
Posts: 3172
Joined: Sat Aug 18, 2012 1:21 am
Location: Korea

Re: Power Supply

Mon Jun 16, 2014 5:50 am

Possum wrote:Hi

I want to build RP into an router so I can have a low power (green) always on Torrent server. I don't like the idea of having 2 wall wart power supplies. Is there a way to get only one power supply and power Both my RP and the router.


Thank you..
Buy a USB power supply with two USB outlets.

User avatar
rpdom
Posts: 11807
Joined: Sun May 06, 2012 5:17 am
Location: Essex, UK

Re: Power Supply

Mon Jun 16, 2014 6:07 am

Does the router also use a 5v regulated power supply?

If so, you could do as ame suggests but you'd probably have to make up a cable to connect to the router.

If not, no, you can't do it very easily. You'd have to get a PSU that will supply 5v for the Pi and whatever voltage the router takes and be able to provide enough current for both.

Possum
Posts: 23
Joined: Thu Mar 22, 2012 2:32 pm
Contact: Website

Re: Power Supply

Mon Jun 16, 2014 10:31 am

Its 3 Volts. I will try and buy a second hand 5 V one. Hmmmmmmm. So I might be able to get a 5 V usb power supply with 2 jacks and power both the router and the RP..

Oh..This is going to be fun!

thx everyone..

Valcrist
Posts: 2
Joined: Tue Jun 17, 2014 11:59 am

Re: Power Supply

Tue Jun 17, 2014 12:51 pm

I did a similar thing a bit recently and here are a few tips..

First of all, don't get too excited and expect to be 'blown away' by the Pi's performance as a "torrent server" (for downloading). It's honestly not that great. It normally does 2-2.5MB/s max while the desktop can easily get 30MB/s+ on average (I used Ubuntu ISO torrents for benchmarks). From what I gather from the web, the ethernet port (because it's sharing the USB bus - which you're also using for storage) is the bottleneck. Copying files from the Pi (via SMB) caps at 4.5MB/s and writing to it is at 3MB/s. Other people managed to make it go faster (via overclock, etc), but that's the fastest I managed to make it go.

The slow download speed doesn't make it such a nice "torrent server" for downloading. Despite having a Pi set up for torrents, I still find myself using the desktop to download because it can download stuff for a fraction of the time it takes the Pi. And sure Pi is greener, but time is gold. As an always-on seeding box though, it performs remarkably well.

For the hub, I recommend the D-Link DUB-H7. I use that in my setup and it can power 2 Pi's, a 2.5" external drive (WD Passport), and still have enough juice to spare. I have this USB power meter thing so I actually tested this. Each Pi takes 0.8amps, the HDD takes 0.3 = 1.9A on a hub that can supply 2.4A. The Pi's are connected to the 2 'fast charging' ports. The fact that it's a USB2 hub while the rest of the world has already moved on to USB3 means that you can get it cheaper now. :D

Possum
Posts: 23
Joined: Thu Mar 22, 2012 2:32 pm
Contact: Website

Re: Power Supply

Tue Sep 19, 2017 11:40 pm

I got a RP Zero W. It gets its power off the USB port on my router...

All is working fine..


I guess only time will show me how stable the power is..

Im happy with any Torrent Speed. But faster is better..

Thx..

Return to “Recommended peripherals”

Who is online

Users browsing this forum: No registered users and 9 guests