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Hectic - oldbloke's mutterings
May 14th, 2013
01:49 pm
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Hectic
Raspberry Pi arrived, wasn't expecting it quite so soon

Examined power socket, noted that although on the webpage they mention running it off phone chargers, it's not a size we have

Run into Tod, get USB keyboard, mouse, memory stick.
No externally powered USB hubs, if only we hadn't lost the supply for the one we inherited from L's dad.
No suitable power supplies.

Get home, start ransacking house.
Eventually find cable that converts socket on Pi to standard USB. We have supplies for that.
After a really deep search, in the furthest back darkest corner of the "office", find a couple of supplies that'll fit the hub.

Good to go!

Now to package it all back up so YB can open it when he gets in from school...

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From:oldbloke
Date:May 14th, 2013 01:10 pm (UTC)
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2A, doesn't /say/ regulated... It's from an Apple device of some sort
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From:g8bur
Date:May 14th, 2013 01:50 pm (UTC)
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I'd recommend using a regulated supply of at least the stated current requirement of the equipment to be powered. More current capability than needed on a regulated supply does not matter.

An unregulated supply will only put out its stated voltage when it is supplying the amount of current stated on it. Its voltage will be higher - possibly too high for the powered device to stand - when a lower current is drawn.

I have a boxful or two of regulated and unregulated 'wall warts', and I've measured 18 volts out of a nominal '12-volt' unregulated one when under a low current load.
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From:bellinghman
Date:May 14th, 2013 01:48 pm (UTC)
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It's also the size that new kindles use. (At least, the Touch and Paperwhite). Those kindles don't even come with chargers - just a USB<->micro cable to attach to your PC, on the assumption you will have one of those.

(I suppose you might have a Kindle, and use WiFi to get content on but have no actual computer, and not have a modern phone either, but that's probably a small enough demographic that it's better overall not to ship Yet Another Charger.)
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From:bellinghman
Date:May 14th, 2013 02:37 pm (UTC)
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Or the ASUS Transformer, which has a very odd connector on it.

In its defence, it's also used to attach the detachable keyboard/battery/extra ports/&c to the tablet, so quite possibly way beyond what a micro-USB connector is capable of.

But it's an absolute bugger getting hold of the cables. Took me months to track one down so I had a spare.
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From:bopeepsheep
Date:May 14th, 2013 03:01 pm (UTC)
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For those who don't have a computer, or don't want to tie up all their USB sockets, extensions with USB sockets exist. (Usually much cheaper than that, too, but it was a convenient link.)

Given that I now have seven things that need regular (1-3 day) charging with a USB cable, it's worked out easiest to leave the Apple and micro USB cables in the sockets and just switch out what's charging.
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From:hooloovoo_42
Date:May 14th, 2013 04:58 pm (UTC)
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I also have multi purpose chargers left plugged in - upstairs, downstairs and in the car. The car also has spare USB sockets with enough juice to charge tablets.
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From:drdoug
Date:May 15th, 2013 05:25 am (UTC)
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Hooray! Hope YB has fun with it. I'm guessing you know about Minecraft Pi Edition, and that it was one of the main reasons to get him a Pi?
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