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by Jim Manley
Sun Jan 03, 2016 7:16 am
Forum: General discussion
Topic: Keep time: leap second?
Replies: 11
Views: 2413

Re: Keep time: leap second?

As you surmised, RTCs don't know anything about leap seconds, so, it comes down to the OS. I'm guessing that Linus Torvalds' reference Linux kernel, Debian, and hence Raspbian and Ubuntu (which both derive from Debian) both implement the following via the Network Time Protocol, and occasional access...
by Jim Manley
Sun Jan 03, 2016 6:53 am
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

OK my homies in NYC, my parents grew up in Queens and I was born and grew up about 25 miles East of the MicroCenter in Brooklyn, so please help me hook my students up with some Zeroes from the Brooklyn/Gowanus Expressway store - thanks Jim, Sent you a PM. Got it and replied. I knew there were real ...
by Jim Manley
Sun Jan 03, 2016 6:37 am
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

I don't know why I didn't think of this earlier (or, more likely, someone else who's actually sane ;) ), but in theory, if we get enough people together (preferably students, their parents, and their educators, first), we should be able to contract with Element 14 to build us Zeroes at whatever qua...
by Jim Manley
Sun Jan 03, 2016 5:31 am
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

Jim, Do stop it with abusive, baseless and muddled rants. You are an embarrassment to your countrymen. There's a good chap. I'll make you a deal, Heater. You apologize for your every single negative comment about the U.S. and Americans who saved your country, and pretty much every other one in most...
by Jim Manley
Sat Jan 02, 2016 10:31 pm
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

Emma, et al, I took the opportunity to point out exactly how far some people have their craniums (cranii? ;) ) stuck up their posterior orifices (there's some quaint, colloquial English for you! :lol: ). They either don't know their own history from which they've benefited their entire lives (so muc...
by Jim Manley
Sat Jan 02, 2016 9:50 pm
Forum: General discussion
Topic: Pi zero connections
Replies: 11
Views: 4987

Re: Pi zero connections

The B+/2B test points were reported in https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=89522 as: PP1 5V from micro-USB PP2 5V from micro-USB PP3 GND PP4 GND PP5 GND PP6 GND PP7 5V after polyfuse PP8 3V3 PP9 1V8 PP10 Goes from 3V3 to 2V on brownout PP11 DAC_2V5 (for composite video DAC) PP12 ...
by Jim Manley
Sat Jan 02, 2016 9:12 pm
Forum: General discussion
Topic: What is default dns-nameservers number in raspberry?
Replies: 2
Views: 613

Re: What is default dns-nameservers number in raspberry?

There's no such thing as a default DNS server set in any host, Pi or otherwise. It has to be set either automagically via DHCP (Dynamic Host Configuration Protocol - the typical method that is usually set in most systems) or manually (so-called "static" network configuration). You normally just let ...
by Jim Manley
Sat Jan 02, 2016 2:22 am
Forum: General discussion
Topic: powering up rasp pi
Replies: 10
Views: 1378

Re: powering up rasp pi

Had this system up and running with xbmc - but had a lot of issues with static interference with the sound system - After reading a few forums I came to the conclusion it might be the psu - I currently run it through a 12v adapter with a buck converter to bring the v down to about 5v's anyway witho...
by Jim Manley
Sat Jan 02, 2016 1:54 am
Forum: General discussion
Topic: Pi zero connections
Replies: 11
Views: 4987

Re: Pi zero connections

Anyone made a list of them to identify them? Sure ... 1, 2, 3, 4, 5 ... :lol: They're just test points that make it mechanically easier to make connection with the testing rig, rather than stressing the connectors. You can get the same access through the micro-USB, mini-HDMI, GPIO, composite video,...
by Jim Manley
Fri Jan 01, 2016 7:49 am
Forum: General discussion
Topic: 2 node raspberry pi supercomputer
Replies: 71
Views: 15441

Re: 2 node raspberry pi supercomputer

I was wondering about the networking over USB idea. There is a slight chance that using PPP over the UARTs may be a bit quicker. One is not shoveling all data through the same interface. Did you mean my post regards USBNET which I undertook as proof of concept: https://www.raspberrypi.org/forums/vi...
by Jim Manley
Fri Jan 01, 2016 2:23 am
Forum: General discussion
Topic: First time poster, have some general questions
Replies: 9
Views: 1353

Re: First time poster, have some general questions

So im new to this whole thing and have some questions on general use. Im 16 years old and have always had a passion for technology, and the appeal of having a mini computer setup you can take anywhere and have the versatility is just so freakin cool to me xD. The first question being versatility. I...
by Jim Manley
Fri Jan 01, 2016 12:06 am
Forum: General discussion
Topic: Pi zero connections
Replies: 11
Views: 4987

Re: Pi zero connections

In addition to the 40-pin GPIO connector solder pads, there are a pair of solder pads to allow the Zero to be rebooted when connected momentarily, and a pair for the NTSC/PAL composite video output available on all Pi models. So, it is possible to solder to those latter two pads a thin 75-ohm coaxia...
by Jim Manley
Thu Dec 31, 2015 7:03 pm
Forum: General discussion
Topic: Pi Z on top
Replies: 3
Views: 670

Re: Pi Z on top

Seems to me that hats are no use plugged on top of the Pi Zero. It should be the other way round. Hats with a Pi Z plugged on top. That would be OK for some smaller HATS that don't have anything significant on top, but it won't work for HATs that have displays, LED matrices, prototyping areas, etc....
by Jim Manley
Thu Dec 31, 2015 6:27 pm
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

I think you'll find that most of the counties in the UK are shires, so it's nothing quaint at all. There are fewer counties that aren't shires. https://en.wikipedia.org/wiki/List_of_United_Kingdom_county_name_etymologies 55 out of 105 according to that page, so juuuust barely, and there are none in...
by Jim Manley
Thu Dec 31, 2015 5:08 am
Forum: General discussion
Topic: Operating System Suggestions?
Replies: 15
Views: 2281

Re: Operating System Suggestions?

DietPi reportedly allows you to configure Raspbian pretty much any way you might want, and if it's missing something you need, just ask for it. The developer is extremely responsive to suggestions and quick to implement them if they're feasible: http://DietPi.com Although not quite as easy to instal...
by Jim Manley
Thu Dec 31, 2015 4:23 am
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

jdb wrote:Living in rural Cambridgeshire will do that for you.
Oh, how quaint, living in the Shire! I suppose the inhabitants are diminutive in stature and have furry feet, too? :lol:
by Jim Manley
Thu Dec 31, 2015 4:02 am
Forum: General discussion
Topic: RF ID missing
Replies: 5
Views: 1018

Re: RF ID missing

I have read through that docuement a bit and turned on echo, when it replies I get : ATID OKA5 which is the 5AA5 you mentioned, but is there a better way to view this so that the OK isn't overwriting? if I do ATRI, I get nothing. These are supposed to talk straight out of the bag as far as I know. ...
by Jim Manley
Tue Dec 29, 2015 6:49 pm
Forum: General discussion
Topic: Acceptable input voltages for power?
Replies: 62
Views: 76649

Re: Acceptable input voltages for power?

BTW note that these don't actually supply 3a as advertised. At least not continuous. Best I could get was 1.9a but that is more than enough for my Pi2 and certainly the Zero. In fact half that would be OK too. Note that the specs say that it supplies 3 Amps of current _MAX_. The amount of current d...
by Jim Manley
Tue Dec 29, 2015 6:26 pm
Forum: General discussion
Topic: DietPi | Minimal Raspbian. Optional "ready to run" software
Replies: 643
Views: 233997

Re: DietPi | Minimal Raspbian. Optional "ready to run" softw

DietPi automation allows users to fully automate the whole installation process with no user input, and, automatically install optimized software from the DietPi-Software catalogue. Essentially 1 file to setup the system how you want it, couldn't be simpler, and you can share your automation file w...
by Jim Manley
Tue Dec 29, 2015 5:56 pm
Forum: General discussion
Topic: Pi Zero Availability
Replies: 83
Views: 16106

Re: Pi Zero Availability

Only RPT know the production schedule, we as a community, are not privvy to their plans :shock: Sure we are - they're apparently going back to their Januarly 2012 plan of making 10,000 boards at a time. Then, a pallet is dropped in the driveway of one of the Foundation "board" members (pun fully in...
by Jim Manley
Mon Dec 28, 2015 4:23 am
Forum: General discussion
Topic: RF ID missing
Replies: 5
Views: 1018

Re: RF ID missing

Here's the Ciseco Radio Unit Configuration Guide: http://openmicros.org/index.php/articles/88-ciseco-product-documentation/260-srf-configuration The default ID is 5AA5, which can be verified via the ATID command. The default ID for remote nodes is -- which can be verified using the ATRI command. If ...
by Jim Manley
Mon Dec 28, 2015 3:35 am
Forum: General discussion
Topic: Dual boot with NOOBS?
Replies: 11
Views: 2647

Re: Dual boot with NOOBS?

You can use Ethernet with a USB adaptor on the Zero... Most schools/districts will not allow any computer they don't completely control onto their wired networks or WLANs that are inside their firewalls, especially not anything that's not running their Windows stack with "security" fluff, and most ...
by Jim Manley
Mon Dec 28, 2015 2:51 am
Forum: General discussion
Topic: Mikrobus Prototyping
Replies: 5
Views: 2004

Re: Mikrobus Prototyping

Hi Jim Hope you are having a great Christmas. And a very Merry Christmas and Happy New Year to you! I agree, the two-fer board seems more than a trifle limiting. I did a GPIO count on the Pi 2 Click Shield and it appears that 18 GP pins are used, which doesn't include any power, ground, or other co...
by Jim Manley
Mon Dec 28, 2015 2:39 am
Forum: General discussion
Topic: Pi Zero with headers
Replies: 50
Views: 11006

Re: Pi Zero with headers

Nope. It's still 'small', and it's not 4x more expensive, one you add the extra connectors you might need (which of course is the point of this thread). But of course, there will always be times when you want something that small, for which the Zero will be fine. But for general Pi use? Go with the...
by Jim Manley
Sun Dec 27, 2015 5:06 pm
Forum: General discussion
Topic: Dual boot with NOOBS?
Replies: 11
Views: 2647

Re: Dual boot with NOOBS?

Not all Pii can be connected to the Internet via Ethernet readily ... ummmm, let me think ... oh, yeah, how about a Zero, well assuming you can acquire one via less than kidnapping or armed robbery ;)? IIRC, it has always been possible to build your own custom NOOBS installer card without needing a ...

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