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by W. H. Heydt
Fri Jul 20, 2018 8:57 pm
Forum: General discussion
Topic: Is it suitable? For a Computer Science course?
Replies: 10
Views: 275

Re: Is it suitable? For a Computer Science course?

Put me down in the "yes" camp.

Even though I had managed--unusual at the time--learned to program before going off to university, I would have been incredibly happy to get a Pi a month of two before then....had they existed at the time. Which, alas, they did not, what with it being 1966.
by W. H. Heydt
Fri Jul 20, 2018 5:17 pm
Forum: General discussion
Topic: We're looking at introducing more swag - what would you like to see?
Replies: 43
Views: 761

Re: We're looking at introducing more swag - what would you like to see?

How about alternate case tops? For instance, ones that work well with HATs? Or an alternate case bottom that has holes to terminate stand-offs securely? (I dare say one could just drill out the posts that are there, but having a case *designed to use standoffs would be better.)
by W. H. Heydt
Fri Jul 20, 2018 5:14 pm
Forum: General discussion
Topic: We're looking at introducing more swag - what would you like to see?
Replies: 43
Views: 761

Re: We're looking at introducing more swag - what would you like to see?

How about an airline sick bag with a Raspberry logo? So that we're ready for the next time that wibbly wobbly sick making things are planted on the home page. Seriously, the best swag I ever got (from BMC Software) is a keyring with bottle opener. https://www.wedunit.com.au/19005-large_default/pers...
by W. H. Heydt
Fri Jul 20, 2018 5:03 pm
Forum: General discussion
Topic: Problem with connecting raspberry to Linux
Replies: 34
Views: 754

Re: Problem with connecting raspberry to Linux

Oh, how I wish this forum made it easier for me not to see time-wasting posts . . . :mrgreen: Ah! But it does. As soon as you find that a thread isn't productive (in your estimation), stop reading it and don't read it in the future. If you find a given poster has nothing to say that you consider in...
by W. H. Heydt
Fri Jul 20, 2018 4:55 pm
Forum: General discussion
Topic: Raspberry Pi Podcasts
Replies: 3
Views: 103

Re: Raspberry Pi Podcasts

I kind of have to shrug at the idea of podcasts. I think they're an acquired taste--and one that I haven't acquired. Even if a podcast is really well done (good sound level, speakers with clear enunciation, stays on topic, avoids filler fluff, etc.), they are so very, very linear. Mich easier (for m...
by W. H. Heydt
Fri Jul 20, 2018 4:36 pm
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 51
Views: 1422

Re: A new level of seasickness

For the forum, switch to the prosilver theme. It makes navigation easier. As for the main raspberrypi.org site, I don't really care one way or another. I usually just go there to click on one of the links at the top, the they're still there, so... ¯\_(ツ)_/¯ It does seem to be targeted at a younger ...
by W. H. Heydt
Fri Jul 20, 2018 4:30 pm
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 51
Views: 1422

Re: A new level of seasickness

Gavinmc42 wrote:
Fri Jul 20, 2018 5:09 am
You are all a bunch of grumpy old men :lol:
Yes. Yes, I am. But my wife, an even older grumpy old woman, has even shorter shrift for gewgaws and animation on web sites than I do.
by W. H. Heydt
Fri Jul 20, 2018 12:23 am
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 51
Views: 1422

Re: A new level of seasickness

Another minor annoyance...it used to be that if you were looking at the forum listing, you could very quickly get tt the bottom of the listing and click the "Board Index" link to do a refresh and return to the top. Now there is too much boiler plate down there and the button scrolls off the top of t...
by W. H. Heydt
Thu Jul 19, 2018 7:19 pm
Forum: General discussion
Topic: RPi (Zero) in extreme temperatures experiences
Replies: 7
Views: 231

Re: RPi (Zero) in extreme temperatures experiences

That's the Pi3B. The defaults have been: Model B, 700MHz. Model A, 700MHz, Model B+, 700MHz, Model A+, 700MHz, Pi2B (both variants), 900MHz, Pi0/Pi0W, 1GHz, Pi3B, 1.2GHz, Pi3B+, 1.4GHz. IIRC, when I got my first Pi 1B (May 2012), the default was 600MHz, later raised to 700. Hmmm... Doesn't match my...
by W. H. Heydt
Thu Jul 19, 2018 7:13 pm
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 51
Views: 1422

Re: A new level of seasickness

It reminds me of the Good Old Days, people's first forays into HTML and throwing everything they had discovered into the mix before coming to understand that just because one can doesn't mean one should, that style is more than about making an impact. My wife's web site, www.kithrup/com/~djheydt is...
by W. H. Heydt
Thu Jul 19, 2018 4:51 pm
Forum: General discussion
Topic: The problem with the operating system file!
Replies: 13
Views: 397

Re: The problem with the operating system file!

Peazip on Windows also handles the >4GB zip file.
by W. H. Heydt
Thu Jul 19, 2018 4:48 pm
Forum: General discussion
Topic: RPi (Zero) in extreme temperatures experiences
Replies: 7
Views: 231

Re: RPi (Zero) in extreme temperatures experiences

The Raspberry Pi zero is set to 1GHz by default, thats why it doesn't say it has been throttled. Thats odd though, as it should have dropped to ~600 MHz after hitting ~82℃ Oh is that so? For some reason I thought 1.2ghz was the default. Yeah then I don't know why it did not do that. That's the Pi3B...
by W. H. Heydt
Thu Jul 19, 2018 4:42 pm
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 51
Views: 1422

Re: A new level of seasickness

I didn't notice anything in particular moving, Just hover over the raspberry and the 'buy' thingie at the top of any page Ah. That explains it. Not something I do unless I plan to click on an icon. I scrolled down looking for the blog "thimbnails" and when I didn't find them, I scrolled back to the...
by W. H. Heydt
Thu Jul 19, 2018 4:04 pm
Forum: General discussion
Topic: A new level of seasickness - Or how I learnt to stop worrying and love the new website
Replies: 51
Views: 1422

Re: A new level of seasickness

I didn't notice anything in particular moving, but I agree with you on the principle. Also...that is one *radical* change to the front page. I sometimes wonder if web sites get changed just because they can and not to accomplish a relevant goal.
by W. H. Heydt
Thu Jul 19, 2018 4:49 am
Forum: Beginners
Topic: reading RAM value before initialization during boot process
Replies: 1
Views: 63

Re: reading RAM value before initialization during boot process

Welcome to the forums. When you say "read the value of the RAM" do you mean, how much RAM is there (or how much is allocated in the GPU/CPU split), or do you mean that you want read the contents of memory before the OS gets to it? The Linux kernel is the OS. Unless you start by running "bare metal" ...
by W. H. Heydt
Thu Jul 19, 2018 12:38 am
Forum: Off topic discussion
Topic: 'You are permanently banned' error
Replies: 17
Views: 586

Re: How to contact board administrator?

Hmm, thats an odd one. It was a ban by IP adress, rather than username, wihch is also odd. AFAIK, you have not been banned, and you can still post, so perhaps just a glitch in the matrix. Even odder... At the bottom of the OPs posts, where one would expect to see a .sig entry, it says "user is bann...
by W. H. Heydt
Thu Jul 19, 2018 12:33 am
Forum: General discussion
Topic: GPS recommendations
Replies: 5
Views: 167

Re: GPS recommendations

Has anybody tried to make a local differential GPS system using two Pi's? It would need both Pi's to be fitted with similar GPS modules and both be on the same network so that they can communicate with each other. One of the Pi's (static Pi) will be in a fixed position and readings taken over a len...
by W. H. Heydt
Wed Jul 18, 2018 6:17 pm
Forum: General discussion
Topic: GPS recommendations
Replies: 5
Views: 167

Re: GPS recommendations

To get 1 m accuracy (and least in less than hours to days) probably requires military grade equipment, which would be both expensive and--most likely--have restrictions placed on purchase. What I would do is to settle on what you can find within your budget and then replace it in a few years with so...
by W. H. Heydt
Wed Jul 18, 2018 4:17 pm
Forum: Beginners
Topic: Rasberry pi 3 b+ battery
Replies: 7
Views: 254

Re: Rasberry pi 3 b+ battery

There is no current battery technology that can run a Raspberry Pi for two weeks, without charging it. Get a solar setup, and prepare for some learning. Sure there is...a bank of Lead Acid batteries. Preferably "deep discharge" marine batteries. Not very portable, I'll grant you, but it could be do...
by W. H. Heydt
Wed Jul 18, 2018 1:58 am
Forum: Beginners
Topic: Rasberry pi 3 b+ battery
Replies: 7
Views: 254

Re: Rasberry pi 3 b+ battery

There is no current battery technology that can run a Raspberry Pi for two weeks, without charging it. Get a solar setup, and prepare for some learning. Sure there is...a bank of Lead Acid batteries. Preferably "deep discharge" marine batteries. Not very portable, I'll grant you, but it could be do...
by W. H. Heydt
Tue Jul 17, 2018 6:23 pm
Forum: General discussion
Topic: Free Fall detection through Accelerometer using raspberry pi
Replies: 11
Views: 317

Re: Free Fall detection through Accelerometer using raspberry pi

Yeah, that as well. Also if your object is spinning whilst free falling and the accelerometer is not exactly at the center of mass of the object it will read some acceleration due to centrifugal force. Centripetal force, actually. But hey, let's start from basics. Yes...apply the old programming tr...
by W. H. Heydt
Tue Jul 17, 2018 5:24 pm
Forum: General discussion
Topic: Free Fall detection through Accelerometer using raspberry pi
Replies: 11
Views: 317

Re: Free Fall detection through Accelerometer using raspberry pi

Plus a small acceleration caused by drag from air.... (For true zero g, you need to be in a vacuum. Being on the ISS counts as being in a vacuum for this purpose. There is an exception for powered flight designed to counteract the air drag, as practiced by the Vomit Comet.)
by W. H. Heydt
Tue Jul 17, 2018 5:20 pm
Forum: General discussion
Topic: "Low depth" power supply
Replies: 15
Views: 442

Re: "Low depth" power supply

Thanks Mortimer - that is indeed my fall back option. I’d just like to reduce wire clutter as much as possible and try and keep things a bit tidier, even if it will be out of sight :) Cable ties to keep things neat. In the US, I can get extension cords with flat plugs that stick out about 1/4". One...
by W. H. Heydt
Mon Jul 16, 2018 2:04 am
Forum: General discussion
Topic: A Case for RPi
Replies: 8
Views: 341

Re: A Case for RPi

Patents apply to processes, there are also copyrights for images and trade marks. Both patents and copyrights can have a limited lifetime, but trade marks can live forever. Since Nintendo is still an ongoing concern I would try not to infringe on their images or trademarks. If you are selling a pro...
by W. H. Heydt
Sun Jul 15, 2018 10:28 pm
Forum: Beginners
Topic: How to restore rewritten version of CSV file?
Replies: 11
Views: 253

Re: How to restore rewritten version of CSV file?

Thank you all, good people! For the testing - I intentionally use 'w' mode of writing files. Don't need appending etc. No matter how careful you are, it may happen to everyone. Regards! In that case.... I would recommend wrapping your program in a shell script (if it isn't already) and including a ...

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