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by veronicathecow
Thu Mar 16, 2017 8:32 pm
Forum: Other projects
Topic: The Speed of Light
Replies: 6
Views: 1712

Re: The Speed of Light

Hi Geoff, I saw your project whilst looking for anything about voltmeter interfacing, nicely done this is what Pis are about having fun. I was wondering if you would consider it cheating to add a couple of bit of circuitry that might give you better accuracy? My thought is the Pi operates a circuit ...
by veronicathecow
Thu Aug 29, 2013 7:11 am
Forum: General discussion
Topic: Many LEDs But One Resistor In Parallel?
Replies: 18
Views: 10491

Re: Many LEDs But One Resistor In Parallel?

There is a Raspberry Pi 7 page PDF available here to help with soldering.
http://www.raspberrypi.org/archives/1494
And unless you are Clark Kent or his alter ego then I would recommend a lightly damp sponge (proper soldering sponge not one taken from the sink) for cleaning rather than fingers.
by veronicathecow
Thu Aug 29, 2013 6:50 am
Forum: General discussion
Topic: Android watch plus a Raspberry Pi, and ideas?
Replies: 5
Views: 1328

Re: Android watch plus a Raspberry Pi, and ideas?

Silly me, I clearly didn't think it through properly, thank goodness for the help we newbies can get on forums huh :lol:
And as my friend Marty pointed out I can replace that old fashioned car battery with a "Mr Fusion" so all sorted now.
by veronicathecow
Wed Aug 28, 2013 10:17 am
Forum: General discussion
Topic: Many LEDs But One Resistor In Parallel?
Replies: 18
Views: 10491

Re: Many LEDs But One Resistor In Parallel?

Hi Schorschi, if you are worried about space then search for "dil resistor array". There are lots of packages types that may give you a smaller size than discrete resistors. Of course if your driver device automatically and safely limits the amount of current to each O/P pin then you won't need a re...
by veronicathecow
Tue Aug 27, 2013 4:55 pm
Forum: General discussion
Topic: Android watch plus a Raspberry Pi, and ideas?
Replies: 5
Views: 1328

Re: Android watch plus a Raspberry Pi, and ideas?

Fun though that might be, once you have added a watch circuit, wifi, bluetooth, 3g internet dongles, phone, display, camera, gps and a small car battery to power this lot I'm not sure i could lift my arm to see the time 8-)
Other than that I feel it's a direct replacement...
by veronicathecow
Tue Aug 27, 2013 8:14 am
Forum: General discussion
Topic: Android watch plus a Raspberry Pi, and ideas?
Replies: 5
Views: 1328

Android watch plus a Raspberry Pi, and ideas?

I've just ordered one of these and was wondering if anyone was planning on any projects combining this and a Raspberry Pi? http://www.kickstarter.com/projects/omate/omate-truesmart-water-resistant-standalone-smartwa I'm thinking remote control robots (Think General Jumbo from the Dandy back in the 1...
by veronicathecow
Fri Jan 27, 2012 10:24 pm
Forum: Other projects
Topic: interesting Idea - Looking for info!
Replies: 27
Views: 6531

Re: interesting Idea - Looking for info!

Nanites.
by veronicathecow
Fri Jan 27, 2012 7:58 pm
Forum: Other projects
Topic: interesting Idea - Looking for info!
Replies: 27
Views: 6531

Re: interesting Idea - Looking for info!

<t>There are so many variables and the calcs I made assumed mostly no extra losses so here are some more thoughts.<br/> <br/> Skin thermal resistance, probably quite high, perhaps best situated near a major blood vessel that is close to the surface of the skin so increases heat flow to that area.<br...
by veronicathecow
Fri Jan 27, 2012 7:52 pm
Forum: Off topic discussion
Topic: So, this thing called Linux.
Replies: 36
Views: 7893

Re: So, this thing called Linux.

<t>The other day I was installing Windows 7 for a friend. I tried to create a folder called "Music" Windows 7 said "There is already a folder called "My Music" do you wish to merge the contents."<br/> <br/> I replied "n"o and it did not create the folder! I tried again with "Yes" on the off chance a...
by veronicathecow
Fri Jan 27, 2012 7:42 pm
Forum: General discussion
Topic: If you could order now..
Replies: 151
Views: 26838

Re: If you could order now..

One model B for me with a possible second one later on. All these model B replies makes me wonder if the model A will actually get produced? I believe the first batch is all "B"'s?
by veronicathecow
Fri Jan 27, 2012 7:21 pm
Forum: Other projects
Topic: GPIOs suitable for Microswitches? Joysticks?
Replies: 14
Views: 4812

Re: GPIOs suitable for Microswitches? Joysticks?

Might be worth adding some protection circuitry like diodes, Zener diodes and some resisters to protect from static as I am not sure how well the GPIO are protected and for a few pence it is worth it.
by veronicathecow
Wed Jan 25, 2012 5:17 pm
Forum: Other projects
Topic: interesting Idea - Looking for info!
Replies: 27
Views: 6531

Re: interesting Idea - Looking for info!

<r>Hi, TEGs output voltage varies with Tdiff (Difference in temp between hot and cold).<br/> <br/> Here is a graph some people have done. Assuming a 20oC Tdiff (body to ambient ) you will be getting about 0.5 of a volt.<br/> <br/> <URL url="http://www.picotech.com/experi.....sults.html">http://www.p...
by veronicathecow
Fri Jan 13, 2012 7:42 pm
Forum: Other projects
Topic: Star trek-style 'tricoder' invention using an r-pi
Replies: 38
Views: 9140

Re: Star trek-style 'tricoder' invention using an r-pi

I'm wondering if a finely tunable set of LEDs and sensors could read specific absorption lines on either the disease or it's waste products? Scan the fingers or earlobes?
by veronicathecow
Fri Jan 13, 2012 7:39 pm
Forum: Other projects
Topic: Puppy
Replies: 16
Views: 4490

Re: Puppy

Hi Lobster, nice to see you over here promoting Puppy. It's definitely the distro I will be using when I get my Pi. I'm thinking a tiny mouse, roll up keyboard and a VGA/HDMI lead, small PSU and away we go.
by veronicathecow
Fri Jan 13, 2012 7:32 pm
Forum: General discussion
Topic: How Much RAM does these distros use ?
Replies: 38
Views: 9070

Re: How Much RAM does these distros use ?

<t>Hi, I find Puppy (There are so many variants!) is the one I always go back to for a small fast and easy to use distro that is very light on Proc and memory usage.<br/> <br/> You may be able to run windows 98 in 16mb of RAM but connect it to the net, no thanks, the anti virus alone would need 50-2...
by veronicathecow
Fri Jan 13, 2012 7:25 pm
Forum: General discussion
Topic: Offer a "made in UK/EU/West" batch?
Replies: 90
Views: 11226

Re: Offer a "made in UK/EU/West" batch?

<t>Hi, first of all many thanks to all for making the Pi happen I can't imagine all the hard work you have and continue to put in.<br/> <br/> I know it may well be impossible to build a batch in UK (I will write to my M.P.) but I would be happy to pay extra for it to happen. Perhaps one way to achie...
by veronicathecow
Fri Jan 13, 2012 8:16 am
Forum: Other projects
Topic: Puppy
Replies: 16
Views: 4490

Re: Puppy

Hi Lobster, nice to see you over here. Puppy will be my choice of distro for Rasp. It's the best Mini distro out there and Barry and others like yourself are so helpful. Thanks for posting. Tony
by veronicathecow
Tue Oct 11, 2011 4:34 pm
Forum: General discussion
Topic: What have we missed?
Replies: 286
Views: 53644

Re: What have we missed?

I would also agree a RTC would be most useful, if nothing else for a wake from sleep function that would keep power consumption low. Very useful for remote sensing where power is limited.
by veronicathecow
Tue Oct 11, 2011 7:32 am
Forum: General discussion
Topic: What have we missed?
Replies: 286
Views: 53644

Re: What have we missed?

<t>Might I request that it is made as environmentally friendly as possible, I.E. recycled packing materials, lower power modes.<br/> Also a connector that will allow the use of that old PSU we all have laying around that belonged to a phone (etc) that died 2 years ago like this.<br/> http://www.onli...
by veronicathecow
Tue Oct 11, 2011 6:44 am
Forum: General discussion
Topic: How would you complete a Raspi for a needy child.
Replies: 12
Views: 2410

Re: How would you complete a Raspi for a needy child.

<r>A quick trip to your local dump or car boot sale may provide all these things for nothing or a lot less. A PCB mounted screw connector for PSU with a diode included would mean a large percentage of standard PSUs from long dead phones etc could be used.<br/> Even better start a give and take stall...
by veronicathecow
Mon Oct 10, 2011 3:41 pm
Forum: Off topic discussion
Topic: So, this thing called Linux.
Replies: 36
Views: 7893

Re: So, this thing called Linux.

<r>If you can get puppy linux running on an arm then it is an amazing system that will run in 128Mb or will totally load into ram if you have 256mb and runs very fast. Very helpful people in the forums as well as there are many different varieties of it including a barebones version.<br/> <URL url="...
by veronicathecow
Mon Oct 10, 2011 3:31 pm
Forum: General discussion
Topic: If you could order now..
Replies: 151
Views: 26838

Re: If you could order now..

Model B for me as well.
It would be interesting to see what the ratio of sales were for instance Model "A" or Model "B" BBC Micros etc. This might give an indication of the initial run ratios for this project.
by veronicathecow
Mon Oct 10, 2011 3:23 pm
Forum: General discussion
Topic: Will the device be sort of "fairtrade"?
Replies: 25
Views: 3448

Re: Will the device be sort of "fairtrade"?

If it\'s not \"Fair trade\" then it\'s \"Unfair Trade\" and all that implies.
Me I would rather pay more for a Fairtrade Raspi, very glad to hear it\'s being assembled at least in UK, well done!
by veronicathecow
Wed Oct 05, 2011 10:42 pm
Forum: General discussion
Topic: What have we missed?
Replies: 286
Views: 53644

Re: What have we missed?

Could I please ask for D to and A to D, some simple digital O/P pins, options of more RAM, low power or pause and wake up on signal mode. Also Puppy Linux would be perfect for this although it's x86 not Arm based. Many thanks.
by veronicathecow
Wed Oct 05, 2011 10:19 pm
Forum: Off topic discussion
Topic: Problems installing Linux
Replies: 8
Views: 2435

Re: Problems installing Linux

<r>Hi obarthelem-y, can I recommend Puppylinux which will run happily in 256Mb of RAM. There are numerous variations, you might as well start with the latest. <URL url="http://distro.ibiblio.org/pupp.....pu-528.iso">http://distro.ibiblio.org/pupp.....pu-528.iso</URL><br/> <br/> If you have 512 or mo...

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