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by electronicsguy
Fri Apr 10, 2015 8:21 pm
Forum: General discussion
Topic: Raspberry Pi Logo Usage
Replies: 8
Views: 1022

Re: Raspberry Pi Logo Usage

like your signature 1 :)

"if it ain't broke , don't fix it" is ok for noobs, but it kills all tech innovation.
by electronicsguy
Thu Apr 09, 2015 8:37 pm
Forum: Troubleshooting
Topic: Pi2 won't stay off
Replies: 18
Views: 2243

Re: Pi2 won't stay off

Nothing on gpios. Connected are: TV (HDMI), lan-cable and power supply. Power is Deltaco USB charger (2,1A) so I concider that quite ok power supply. the power source may be ok on paper, but not necessarily in action. One way to verify it would be to connect an oscilloscope to record the voltage. A...
by electronicsguy
Thu Apr 09, 2015 8:33 pm
Forum: General discussion
Topic: Does the Raspberry Pi work in a Vacuum?
Replies: 60
Views: 8271

Re: Does the Raspberry Pi work in a Vacuum?

3corey2, Be serious, -40C is a common low end spec. for industrial and automotive equipment. Heck it's a normal temperature in winter around here. At 40Km up the temperature is said to be -20C. Mind you, you have to pass though a layer of about -60C at 20Km up ! Your GoPro could not handle it. That...
by electronicsguy
Thu Apr 09, 2015 8:12 pm
Forum: Beginners
Topic: The NOOBS root folder
Replies: 3
Views: 1276

Re: The NOOBS root folder

so what will you do after entering the menu?
by electronicsguy
Thu Apr 09, 2015 3:07 pm
Forum: Beginners
Topic: When is wiringPi required?
Replies: 0
Views: 201

When is wiringPi required?

Hello, I have been using simple GPIO on my RPi B+ with raspbian and python. I can also control the piglow module. I came across the wiringPi python module by Mr. Gordon. Though RPi.GPIO is installed by default in raspbian, the wiringpi module doesn't seem to be install (tested by doing 'gpio' or 'gp...
by electronicsguy
Tue Apr 07, 2015 11:04 pm
Forum: Troubleshooting
Topic: max usb current
Replies: 2
Views: 1040

Re: max usb current

by electronicsguy
Tue Apr 07, 2015 10:37 pm
Forum: Off topic discussion
Topic: Is Raspberry Pi Masculine or Feminine?
Replies: 23
Views: 3519

Re: Is Raspberry Pi Masculine or Feminine?

I would say its like the Bynars, since it only talks to others in 1s and 0s.

Image
by electronicsguy
Tue Apr 07, 2015 6:21 pm
Forum: Advanced users
Topic: Will these relays stand a chance?
Replies: 4
Views: 883

Re: Will these relays stand a chance?

You should read the specs. If these are the original sainsmart brand relays, the specs say: AC250V 10A ; DC30V 10A so the answer to you is yes, technically. However, 8 amps is pretty high current. Its prone to high amount of heat, sparking and fire if you're not careful. You'll need good quality wir...
by electronicsguy
Mon Apr 06, 2015 11:33 pm
Forum: Advanced users
Topic: VirtualBox and Pi
Replies: 12
Views: 6295

Re: VirtualBox and Pi

The user "dietmar" reports that he is able to run XP using qemu on the RPi2 (as of feb 2015), with internet support.

http://www.raspberrypi.org/forums/viewt ... 51#p704451
by electronicsguy
Sun Apr 05, 2015 10:25 pm
Forum: Advanced users
Topic: VirtualBox and Pi
Replies: 12
Views: 6295

Re: VirtualBox and Pi

Just read an issue of Linux Format which claims that Oracle's VirtualBox runs on the Pi. Is this true, it's my understanding that VirtualBox is only supported on X86 hardware ? I think what you mean is virtualbox can emulate a raspberry pi, not run VB on RPi. Virtual box can't emulate a pi anyway. ...
by electronicsguy
Sun Apr 05, 2015 9:48 pm
Forum: Beginners
Topic: Is this a feasible project?
Replies: 2
Views: 453

Re: Is this a feasible project?

Hello, I was wondering if anyone has had experience with using the Raspberry Pi in controlling medical gas flow? I am trying to maintain the Oxygen concentration within a tight range inside a plastic chamber using 100% oxygen and 21% oxygen flowing through "flowmeters" from the wall. At this point ...
by electronicsguy
Sun Apr 05, 2015 9:45 pm
Forum: Advanced users
Topic: VirtualBox and Pi
Replies: 12
Views: 6295

Re: VirtualBox and Pi

tdenson wrote:Just read an issue of Linux Format which claims that Oracle's VirtualBox runs on the Pi. Is this true, it's my understanding that VirtualBox is only supported on X86 hardware ?
I think what you mean is virtualbox can emulate a raspberry pi, not run VB on RPi.
by electronicsguy
Sun Apr 05, 2015 9:41 pm
Forum: Advanced users
Topic: Remove NOOBS and migrate Raspbian to new microSD card
Replies: 23
Views: 6245

Re: Remove NOOBS and migrate Raspbian to new microSD card

PERFECT! Raspbian is already running on the new microSD card in the new Pi 2 with loooooooooots of free disk space :D Really a BIIIIIIIIIG THANK YOU all here! Wish I had created this topic a few weeks earlier, but at least I learned a bit on partitioning etc. :) you could also consider buying a usb...
by electronicsguy
Sun Apr 05, 2015 3:29 am
Forum: Raspbian
Topic: What update ruined my RPi's?
Replies: 50
Views: 5218

Re: What update ruined my RPi's?

DavidS, ...enough to keep me from attempting Raspbian ever again. Why for goodness sake? This make no sense. You don't have any evidence so making any claim is illogical. If you're really concerned your pi hardware is "bricked", return it to the RPIi foundation or ARM's research HQ and maybe if the...
by electronicsguy
Tue Mar 31, 2015 11:07 pm
Forum: Beginners
Topic: Joined this world
Replies: 14
Views: 1576

Re: Joined this world

power adapter, a case, Ethernet cable, HDMI cable.
by electronicsguy
Sun Mar 29, 2015 12:07 am
Forum: Beginners
Topic: sudo - what for?
Replies: 22
Views: 2308

Re: sudo - what for?

I disagree. The whole point of the RPi is to learn about programming, basic electronics, controlling external devices, etc. If you introduce too many abstraction layers, what exactly are you going to learn? You may as well code on your laptop and run the program in a simulator if that's the case. U...
by electronicsguy
Sat Mar 28, 2015 11:57 pm
Forum: C/C++
Topic: C takes WAY to long to compile
Replies: 6
Views: 1127

Re: C takes WAY to long to compile

Takes less than a second on my B+. Use 'top' to see your CPU and memory utilization.
by electronicsguy
Sat Mar 28, 2015 11:50 pm
Forum: Beginners
Topic: sudo - what for?
Replies: 22
Views: 2308

Re: sudo - what for?

[*] There should be some "non-privileged" "portal" into the GPIO - maybe implemented as a background process ("daemon") or some such. Then non-priv'd programs could use this portal to access the GPIO. Note that, IIRC, there already is something like this - that is, ISTR that there is some non-priv'...
by electronicsguy
Sat Mar 28, 2015 10:54 pm
Forum: Beginners
Topic: sudo - what for?
Replies: 22
Views: 2308

Re: sudo - what for?

If you find yourself typing sudo a lot of times - than you're doing it wrong. Use: sudo -s and work in root shell, however this is not a recommended practice for new users because it's too easy break your OS. That's a bogus argument. If a newbie just wants to run simple python code with GPIO, he'll...
by electronicsguy
Fri Mar 27, 2015 10:46 pm
Forum: Advanced users
Topic: SD Card Backup and Custom Image...
Replies: 47
Views: 42261

Re: SD Card Backup and Custom Image...

Isn't it true that using dd to copy an active filesystem can lead to data corruption? I've read this in several places and it seems to make sense as some of the files will be open at the time (and possibly being written to). This tool looks great but I want to make sure I'm backing up my Pi in a wa...
by electronicsguy
Fri Mar 27, 2015 10:38 pm
Forum: Advanced users
Topic: Controlling gpio pins from within pd over ad-hoc
Replies: 6
Views: 1418

Re: Controlling gpio pins from within pd over ad-hoc

I'm sorry but you use the phrase "pure data" all the time. What exactly do you mean by that?
by electronicsguy
Fri Mar 27, 2015 10:27 pm
Forum: Advanced users
Topic: PI 2Model b: shut down cores?
Replies: 7
Views: 1294

Re: PI 2Model b

if it'll put the cores in a low-power state, it should save some power. How much is difficult to say.
by electronicsguy
Wed Mar 25, 2015 10:51 pm
Forum: Camera board
Topic: error in raspi camera documentation
Replies: 7
Views: 857

Re: error in raspi camera documentation

ShiftPlusOne wrote:Ah, thanks. I searched for "IFD-O" and nothing popped up.

Just to be 100% sure, is this correct now:
https://github.com/raspberrypi/documentation/pull/202
Yes that's correct. thanks.
by electronicsguy
Wed Mar 25, 2015 6:43 pm
Forum: Camera board
Topic: error in raspi camera documentation
Replies: 7
Views: 857

error in raspi camera documentation

Hello,
I think there's an error in the raspi camera documentation pdf. I am referring to: http://www.raspberrypi.org/wp-content/u ... tation.pdf, page 17. It should read "IFD0" (IFD-zero) and not IFD-O.

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