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by electronicsguy
Sun May 10, 2015 3:08 am
Forum: Graphics, sound and multimedia
Topic: pi-timolo (pi, timelapse, motion, lowlight)
Replies: 44
Views: 18117

Re: pi-timolo (pi, timelapse, motion, lowlight)

hi,
great work. a question about motion detection: does this implement a circular buffer? If motion is detected, I'd like some past (maybe 30 sec) images also to be stored, so that the final timelapse video is more fluid.
by electronicsguy
Fri May 08, 2015 8:25 pm
Forum: General discussion
Topic: Simple(?) temperature setup
Replies: 3
Views: 440

Re: Simple(?) temperature setup

Image
by electronicsguy
Fri May 08, 2015 3:07 am
Forum: Networking and servers
Topic: Remote Connection
Replies: 14
Views: 2391

Re: Remote Connection

@ktb .. duh! thanks for pointing it out. sorry i misread.
by electronicsguy
Fri May 08, 2015 1:29 am
Forum: General discussion
Topic: Simple(?) temperature setup
Replies: 3
Views: 440

Re: Simple(?) temperature setup

I am as certain as I can be that the hardware is set up correctly, with two DS18B20's connected in parallel and the 4k7 resistor in place. The voltmeter says the 3.3v are there. Is there anything I need to install or activate before I use the terminal to :- sudo modprobe w1-gpio sudo modprobe w1-th...
by electronicsguy
Fri May 08, 2015 1:17 am
Forum: Networking and servers
Topic: Remote Connection
Replies: 14
Views: 2391

Re: Remote Connection

Hi. I'm pretty new with the pi and programming in general. I have been trying to setup my pi (B+ with Raspian) so that I can access it remotely and graphically on a different network. I got x11vnc to work, but it only works on my local network of course. The issue is that I live in an apartment whe...
by electronicsguy
Wed May 06, 2015 10:04 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

Let me put it this way - what specific purpose is being served by having the capability to modify kernel parameters already baked in, in the Raspbian distro, for its users? Not being able to modify kernel parameters would make the Pi unusable for a lot of people without major headaches. The main ex...
by electronicsguy
Tue May 05, 2015 10:44 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

Let me put it this way - what specific purpose is being served by having the capability to modify kernel parameters already baked in, in the Raspbian distro, for its users? There is no general ability to modify kernel parameters. To edit /boot/cmdline.txt you must either already have root access, o...
by electronicsguy
Tue May 05, 2015 9:31 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

All points taken. and thanks for highlighting the business side scenarios, of which I have little knowledge. but at the end of the day, the 'Raspbian' is not a business oriented OS, bound by contracts where you cannot modify the OS. If it is a customized OS designed from Debian by the foundation, wh...
by electronicsguy
Tue May 05, 2015 6:17 pm
Forum: Beginners
Topic: Backing up SD card
Replies: 10
Views: 1087

Re: Backing up SD card

Hello, Can anyone point me at an idiot's guide to backing up an SD card so that I can just reinstall rather than have to go through the whole set up process the next time my pi corrupts? I've tried Win32diskmanager as suggested all over Google but keep getting an image that is WAY too large. Cheers...
by electronicsguy
Tue May 05, 2015 6:13 am
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

again, so what? btw, it can be on an USB stick too.
by electronicsguy
Tue May 05, 2015 12:19 am
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

ghans wrote:The Pi can only boot from SD cards initially. The rootfs might be an USB harddrive , but you still need the SD card for bootup.

ghans
Ya, so? I don't think this has anything to do with boot time security.
by electronicsguy
Sun May 03, 2015 1:50 am
Forum: Networking and servers
Topic: My B+ is a torrent and a NAS, what else?
Replies: 3
Views: 822

Re: My B+ is a torrent and a NAS, what else?

big45-70 wrote:I have my raspberry pi set up as a torrent server, as well as a NAS with samba. I'd like to add yet another function to it and was wondering if anyone had any ideas?
wordpress server?
by electronicsguy
Sun May 03, 2015 1:04 am
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

The trouble is that it's a lifeline, it's the thing you use when the filesystem needs to be fsck'd to recover the system. When you have a system that you can't install a new kernel on but you need it back in a hurry. The RPF kernel also has the magic SysReq key enabled. You'll probably consider tha...
by electronicsguy
Sun May 03, 2015 12:03 am
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

Being able to override the init program is essential. The fact that you can use init=/bin/sh to breach security is an unfortunate side-effect. It's the least of your problems if you're trying to harden a RPi. thanks :) no i am not really trying to harden my system right now, just trying to understa...
by electronicsguy
Sat May 02, 2015 11:59 pm
Forum: Beginners
Topic: default running frequency
Replies: 4
Views: 414

Re: default running frequency

hamza wrote:Why??

As u know, the rpi does not have sleep mode-
So, im trying to reduce its speed instead of sleep mood.
have a look here: http://megakemp.com/2013/02/26/adventur ... pberry-pi/
by electronicsguy
Sat May 02, 2015 11:47 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

It isn't enabled by default, you have to update cmdline.txt to change the init= parm that's passed to the kernel. You need some form of physical security to prevent unauthorised changes to kernel parameters. Sorry that's not what I meant. I meant the ability to use this particular kernel parameter ...
by electronicsguy
Sat May 02, 2015 2:40 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

I understand. My curiosity is: why continue having this in the modern linux architecture. Will a large segment of users be affected if single user mode is disabled today? Is there any reason to disable it? Most proper servers are still kept in a secure (or fairly secure) environment. Single user mo...
by electronicsguy
Fri May 01, 2015 11:42 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

The RPi is unique, you can easily pull the primary data storage device without opening the case. On a secure system you'd a) keep the machine in a secure room, b) not let anyone loose on hardware and c) have a hard drive controller that trashes the data if any tampering occurs. Remember these thing...
by electronicsguy
Fri May 01, 2015 11:40 pm
Forum: Troubleshooting
Topic: Issues with external powered USB HDD
Replies: 8
Views: 842

Re: Issues with external powered USB HDD

Your fstab entry is not going to guarantee reliability. the data reliability will come from not disconnecting the drives before writing all data to it and unmounting it.
by electronicsguy
Fri May 01, 2015 10:28 pm
Forum: General discussion
Topic: gameboy advance LCD for RasPi2
Replies: 4
Views: 5147

Re: gameboy advance LCD for RasPi2

actually the project above uses a replacement screen. If you really want to hack the original GB screen, this page has details: https://flashingleds.wordpress.com/2010 ... meboy-lcd/
by electronicsguy
Fri May 01, 2015 10:20 pm
Forum: General discussion
Topic: gameboy advance LCD for RasPi2
Replies: 4
Views: 5147

Re: gameboy advance LCD for RasPi2

wahoofrix wrote:I have a gameboy advance sp lying somewhere and i am thingking if is it possible to use the lcd for a raspi project.

It will be cool if we can utilize old lcd displays for project
enjoy: https://superpiboy.wordpress.com/

note: it's not for the faint of heart :)
by electronicsguy
Fri May 01, 2015 9:32 pm
Forum: Beginners
Topic: boot from thumb drive
Replies: 4
Views: 392

Re: boot from thumb drive

I am using the original pi and I "update, upgrade and dist-upgrade". Is it possible to boot from a USB drive?. I have part-magic on a USB thumb drive and want to shrink the drive, it is 16GIG. Can I shrink the drive just using pi? jozien1722 as the previous poster, said you can put the entire root ...
by electronicsguy
Fri May 01, 2015 9:30 pm
Forum: Beginners
Topic: How to access Root
Replies: 2
Views: 247

Re: How to access Root

dabonz wrote:Hello,

How can I access Root with Raspbian,so I can add user ???

Regards
Dabonz
if you want interactive root shell, do:
sudo -i
by electronicsguy
Fri May 01, 2015 9:29 pm
Forum: Troubleshooting
Topic: single-user mode on pi + debian wheezy?
Replies: 37
Views: 48270

Re: single-user mode on pi + debian wheezy?

Thanks Dougie. Is there a reason why linux keeps this single user logon? Since you're from a systems background I'm guessing you know a lot about this. Yes I know, if someone has physical access to a machine, they can do whatever they want with the data. But this just seems to make it easier for the...
by electronicsguy
Fri May 01, 2015 9:15 pm
Forum: Advanced users
Topic: Remove NOOBS and migrate Raspbian to new microSD card
Replies: 23
Views: 5978

Re: Remove NOOBS and migrate Raspbian to new microSD card

...the USB drives easily come in sizes of 64GB, 128GB. and are much more reliable than micro-sd cards. Are microSD cards really less reliable than USB drives? Yes, very much so. They're prone to being corrupted - at the data and physical level by ESD, bad connections, etc (I had one which gave out ...

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