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by XAPBob
Tue Apr 03, 2012 12:59 pm
Forum: Other projects
Topic: Cycle computer
Replies: 7
Views: 5264

Re: Cycle computer

<t>GPS is the big unknown, WebCams seem to be on the order of a few tens of mA (i.e. less than .5W for a pair, maybe a bit more for high res?)<br/> <br/> The Pi should be able to fit inside a couple of watt with only low res composite output.<br/> <br/> By the time I look at motor control I'll have ...
by XAPBob
Tue Apr 03, 2012 10:02 am
Forum: Other projects
Topic: Cycle computer
Replies: 7
Views: 5264

Re: Cycle computer

<t>For Pi #2 I'm looking at building a cycle computer.<br/> <br/> I already have a hub dynamo with cache battery and USB output, so I have a power source for the Pi which will be constant whilst I am out and about (I expect power draw to be significantly under 3W without significant graphics output)...
by XAPBob
Fri Mar 30, 2012 2:24 pm
Forum: General discussion
Topic: Re: Status Updates (a.k.a where's my pi at?)
Replies: 66
Views: 46736

Re: Status Updates (a.k.a where's my pi at?)

<t>When I did EMC testing it took an amount of time (deliberately not saying how long here) to run the tests at which point we knew the results, just had to wait for the paperwork.<br/> <br/> Now I know you are doing MORE tests than I had to (as you are covering more bits of legislation etc) but do ...
by XAPBob
Thu Mar 29, 2012 9:53 am
Forum: General discussion
Topic: 'Design cases', I don't really get it
Replies: 21
Views: 4247

Re: 'Design cases', I don't really get it

<t>I have to say that the MicroUSB (input power port) does look as if it could probably be rotated 90 degrees to face the same way as the HDMI port without too much board redesign.<br/> <br/> That would (to my mind) be a (slightly) better configuration.  Obviously I can't see how many traces are und...
by XAPBob
Thu Mar 22, 2012 11:23 am
Forum: Off topic discussion
Topic: Cheapest ethernet/wifi based *anything* ??
Replies: 7
Views: 2271

Re: Cheapest ethernet/wifi based *anything* ??

Yep...

Basically anything that can do ethernet and a handful of little things (i.e. trivial compute cf+ IP) with a GPIO or similar.
by XAPBob
Wed Mar 21, 2012 4:05 pm
Forum: General discussion
Topic: Wakeup ?
Replies: 11
Views: 3746

Re: Wakeup ?

<t>Given that the power usage is so low (4W at full burn) you're probably best off just stopping anything that loops through CPU (e.g. XMBC UI) and anything chewing through the CPU (1080p video playing) and lettin ghte chip power regulation do it's thing.<br/> <br/> Then cron can start up a recordin...
by XAPBob
Tue Mar 20, 2012 12:21 pm
Forum: General discussion
Topic: Linux swap partition
Replies: 31
Views: 6296

Re: Linux swap partition

<t>On more powerful machines I've seen people set up a ram disk (i.e. dedicate some RAM as an ultrafast disk partition) which is then compressed and used as swap space.<br/> <br/> That increases the total memory available, at a much lower latency than disks (at the time SSDs weren't common, but it m...
by XAPBob
Mon Mar 19, 2012 9:20 pm
Forum: General discussion
Topic: Tamperproof Pi
Replies: 10
Views: 3733

Re: Tamperproof Pi

IIRC the problem would be thermal expansion - the epoxy would likely rip some components off the board as the board would move just a little more than the epoxy as heated by a few degrees.
by XAPBob
Thu Mar 15, 2012 9:53 pm
Forum: Off topic discussion
Topic: RPi Delivery
Replies: 3
Views: 1032

Re: RPi Delivery

First batch (smug) is shipping in 3-8 days now (5-10 a couple of days ago) according to my latest email at any rate...

Of course those who have engineering samples, alphas or betas already have a slice of pi
by XAPBob
Thu Mar 15, 2012 3:46 pm
Forum: General discussion
Topic: Exactly what is a Pi?
Replies: 65
Views: 10301

Re: Exactly what is a Pi?

<t>One thing I always find a pain with forums is that "interesting" threads tend to cover multiple pages.<br/> <br/> A useful feature would be a "whole thread on one page please" button.<br/> <br/> This would drop the whole thread into a page that can then be accessed easily and read continuously, n...
by XAPBob
Thu Mar 15, 2012 9:34 am
Forum: Other projects
Topic: Cases for the Raspberry Pi
Replies: 866
Views: 384274

Re: Cases for the Raspberry Pi

<t>I've acquired an LTO3 after one of the drives at work decided it was hungry.<br/> <br/> There's an awful lot of tape in one of those puppies.<br/> <br/> Anyhow - Final plans are to block off the big circular hole with clear perspex, then route the microusb to the "write lock" door, and USB, Ether...
by XAPBob
Thu Mar 15, 2012 9:04 am
Forum: General discussion
Topic: Found A cheap monitor
Replies: 37
Views: 10853

Re: Found A cheap monitor

But then add 20% tax - just one of the reasons that electronics tends to be about $=£
by XAPBob
Wed Mar 14, 2012 11:38 am
Forum: Off topic discussion
Topic: Cheapest ethernet/wifi based *anything* ??
Replies: 7
Views: 2271

Re: Cheapest ethernet/wifi based *anything* ??

<t>With Pi arrival day drawing closer I've been thinking about a number of things, but many of them require some sort of comms from a simple sensor/actuator.<br/> <br/> Most of my house has Cat5, but many people won't<br/> <br/> What's the cheapest (and lowest power if poss) simple comms device we c...
by XAPBob
Wed Mar 14, 2012 12:01 am
Forum: Off topic discussion
Topic: WooT, Updated shipping timeframe (at least for me. Newark/Element14)
Replies: 9
Views: 1551

Re: WooT, Updated shipping timeframe (at least for me. Newark/Element14)

<t>Week commencing 12/3 has been bumped (due to the jack issue) to 10-15 days from today.<br/> <br/> Although their email did say "You are one of the first people in the world who will get their hands on a Raspberry Pi Model B. Congratulations."<br/> <br/> That's nice of them.<br/> <br/> 7+10 = 11?<...
by XAPBob
Tue Mar 13, 2012 1:51 pm
Forum: General discussion
Topic: Raspberry Pi Leads
Replies: 5
Views: 852

Re: Raspberry Pi Leads

No cables - you get a board only (unless buying a bundle from one of the suppliers)
by XAPBob
Tue Mar 13, 2012 10:08 am
Forum: General discussion
Topic: RGB out ?
Replies: 12
Views: 12680

Re: RGB out ?

HDMI/Composite -> RGB convertor: £40ish

New screen: £more

Not buying an RPi: £saving

The device isn't actually designed as a media centre.  It just happens to make a rather good one IFF you have the other bits in your "bits bin"
by XAPBob
Tue Mar 13, 2012 10:04 am
Forum: General discussion
Topic: FYI: disabling strength checking/aging on the fedora image
Replies: 8
Views: 1693

Re: FYI: disabling strength checking/aging on the fedora image

I like the idea of using the Pi epoch
by XAPBob
Thu Mar 08, 2012 3:44 pm
Forum: General discussion
Topic: chasis mounted extentions.
Replies: 17
Views: 4111

Re: chasis mounted extentions.

<t>Out of interest (and because I've found a nice looking case) I looked for an HDMI extension that wasn't 3 feet long - I didn't get below £10, which is frankly ridiculous.<br/> <br/> Where are people sourcing sensible versions? (of any of the connectors)<br/> <br/> I have enough USB extensions fro...
by XAPBob
Wed Mar 07, 2012 2:01 pm
Forum: General discussion
Topic: chasis mounted extentions.
Replies: 17
Views: 4111

Re: chasis mounted extentions.

If that's the only one left then surely that defines where the board will be placed - no need to make everything a flying lead...
by XAPBob
Tue Mar 06, 2012 4:34 pm
Forum: General discussion
Topic: R-Pi inside LCD - all-in-one computer for sub-$150 including accessories
Replies: 11
Views: 2859

Re: R-Pi inside LCD - all-in-one computer for sub-$150 including accessories

Doesn't have to be the only input to the monitor.

And of course the RPi might be "obsolete" but it will still work as fast as it ever did...
by XAPBob
Tue Mar 06, 2012 3:58 pm
Forum: General discussion
Topic: Post your estimated arrival dates
Replies: 323
Views: 51787

Re: Post your estimated arrival dates

<t>Tass said: <br/> <br/> <br/> I still haven't heard anything from Farnell since my initial email confirming a date of 12th March.<br/> <br/> I'm going optimistically assume that I'm just that lucky <br/> <br/> P.S.  Not sure if that's optimism or denial<br/> <br/> <br/> Neither have I.  I'm going ...
by XAPBob
Mon Mar 05, 2012 9:48 am
Forum: Off topic discussion
Topic: Idea For RaspberryPi case
Replies: 8
Views: 2819

Re: Idea For RaspberryPi case

There might well be room inside the BBC without stripping out the BBC.

You just might need to rewire the keyboard to a USB KB controller so you type on both at once
by XAPBob
Mon Mar 05, 2012 9:43 am
Forum: General discussion
Topic: Post your estimated arrival dates
Replies: 323
Views: 51787

Re: Post your estimated arrival dates

7:53 order at Farnell -> w/c 12th March EDD.



Also got in a registration with RS - deciding whether to purchase for a friends kid, or to let it slip for someone else...
by XAPBob
Wed Feb 15, 2012 9:15 am
Forum: General discussion
Topic: Tiny Core Linux
Replies: 32
Views: 9078

Re: Tiny Core Linux

<t><br/> Quote from Chris on September 3, 2011, 10:46<br/> On the resource side it is good, but I spend 30 mins playing with it and found no way to access a file manager. I tried installing several programs which either just hung or the process "went away".<br/> <br/> Its not a good enviroment to us...
by XAPBob
Fri Feb 10, 2012 3:30 pm
Forum: General discussion
Topic: Raspberry Pi base station
Replies: 8
Views: 2431

Re: Raspberry Pi base station

<t>Many TVs and the like come with USB ports – so power can be brought in from many places.  Keyboard with a built in trackball, or touchpad will do for most users.<br/> <br/> I agree that the lack of an ethernet port is a weakness for hobbyists.  But in a school environment it means that students c...

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