PiHub By Pimoroni
As some of you know, I dabble on an off with the Raspberry Pi. As a casual user, I use my pi mostly for playing with linux and the odd gaming session. The Pi is a fun little computer, so long as you don’t expect to much from
it. As an indie games platform it offers a lot of fun, so much that I have even felt myself being drawn to writing a program on the tiny computer.
Anyone who has used a raspberry pi for any length of time, will know that cables can soon start to mount up. It’s amazing that such a tiny computer can take up so much room. The RPi can work fine as a stand alone computer, but start adding a wifi dongle, keyboard, mouse, USB memory stick, card reader and suddenly you’ve run out of USB ports. There are solutions to get around the RPi’s two usb ports, but none of them are simple or straight forward as buying a powered USB hub. First and foremost if you buy a hub for your RPI, you have to get one that comes with its own power supply.
On early models of the RPi, the USB ports were fitted with polyfuses designed to protect the tiny computer from devices that might try and draw too much power, such as external hard drives or web cams. Later models did away with the two fuses and now the RPi has just one fuse. While the latest design has improved matters, you are still stuck with just the two ports which is where a power hub like the Pihub comes in, alleviating your power woes and freeing you from two port hell. The Pihub is the creation of Pimoroni, the UK company that also brought us the Picade. Their website offers supplies to a wide audience of tinkerers, modders and electronic hobbyists. One of their recent offerings to the RPi community was the Pihub, aptly named as the housing of the Pihub is in the shape of the Raspberry Pi emblem. Adorned with green leaves and red berry colours, as hubs go it is by far the cutest I’ve seen. The case is but one cool feature of this little device, and the hardware inside is pretty impressive as well. When buying your Pihub, you have the option to opt-out of buying it with the accompanying power supply. While this might seem like a good way to save money, I would recommend spending the extra money for the PSU as it is well worth the money. Rated at 5.2 volts and 3mA/h, it is more than capable of powering the RPi along with anything else you might want to throw at it. Struggling with external CDROM drives and USB hard drive are a thing of the past.
Unimpeded by polyfuses like the RPi, the Pihub offers the full USB 2.0 package, with a multi TT (transaction Translator) chip for bringing USB 1.1 devices in line with the high bus speeds of USB 2.0. Some devices use only
one TT chip, sharing a single 12mb/s data channel amongst several USB ports, which can significantly impede your performance and lead to a bottle neck effect, unlike the Pihub which has been designed to provide high performance. Designed with 4x USB ports, one of which is specifically engineered to power your Raspberry Pi
computer. Providing a dedicated 1.1 Amp supply, it means no longer needing two separate power supplies, you can run everything from just the one psu. For me this is a massive selling point because I found the increasing number of bits i needed for my Pi really annoying. My desk has been turned from crazy cable jungle to almost down right respectable. While yes, powering the RPi from the Pihub does mean your taking up one of the ports. You’re still left with three full USB 2.0 standard ports as well as the spare port on your RPi. Overall I think the trade-off it worth it.
Speaking with Paul Beech from Pimoroni, he informed me the Pihub had specifically been designed with high quality chips to guarantee 100% compatibility with the RPi. This is no doubt due to the number of cheap hubs on the market, that are less then RPi friendly. In an odd turn of events, I actually observed how compatible the Pihub really was in general. After plugging my wifi dongle and mouse in to the Pihub, I connected it to a Windows XP machine. On booting, XP didn’t even ask for drivers, instead logged me straight on to the local area network through the wireless adaptor. I’ve seen few hubs work this seamlessly. High praise has to go to the chaps at Pimoroni. In conclusion, the Pihub is well worth the £20 if you’re on the market for a decent usb hub for your RPi or PC in general. 10% of profits are given back to the Raspberry Pi Foundation, who use the money to help educate future generations of geeks.
Till next time, keep on geeking!
The Pihub can be found via the Pimoroni store at