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by rpdom
Sun Jun 29, 2014 12:17 pm
Forum: Troubleshooting
Topic: Did I burn out my Pi? No LEDs, doesn't boot when powered.
Replies: 4
Views: 1222

Re: Did I burn out my Pi? No LEDs, doesn't boot when powered

Did I burn out my Pi? Possibly. But you might just have blown the fuse. Unplug your Pi from everything for 24 hours. Then connect just the power supply, no SD card or anything else. See if the PWR light comes on. If that works, unplug it again, then try with the SD card, video and keyboard/mouse. I...
by rpdom
Sun Jun 29, 2014 8:48 am
Forum: Camera board
Topic: Open source H264 encoder/decoder
Replies: 10
Views: 5613

Re: Open source H264 encoder/decoder

Hmm, fairly old news article. From a brief looks it seems to be require at least x86, ARMv7 or some other CPUs. I doubt the Pi CPU would be fast enough to use it well.
by rpdom
Sun Jun 29, 2014 7:06 am
Forum: Raspberry Pi OS
Topic: Cannot start X from pi user
Replies: 2
Views: 1096

Re: Cannot start X from pi user

The last message isn't the important one. That one basically means "Finished". The "lots of messages" bit is most likely to show what is wrong, particularly any that have "EE" at the beginning. If you can post all of those messages (inside tags to make it easier to read) then we might be able to spo...
by rpdom
Sun Jun 29, 2014 6:07 am
Forum: Beginners
Topic: Wifi connected http request refrigerator magenet
Replies: 1
Views: 364

Re: Wifi connected http request refrigerator magenet

The Raspberry Pi is probably overkill for something that simple. A few lines of Python should do the job. I don't do Python, so I can't tell you how, but I do know it can be done simply and others will point you in the right direction. Hardware wise you will need: A Raspberry Pi, an SD card of suffi...
by rpdom
Sat Jun 28, 2014 5:37 pm
Forum: Beginners
Topic: Symbols Mixup
Replies: 7
Views: 1284

Re: Symbols Mixup

This question comes up at least once a week. I think yours is the second time today. The Raspberry Pi defaults to an English keyboard layout. If you want it to work with American keyboards you will need to reconfigure it. At a command prompt/terminal prompt type "sudo raspi-config". Use the up/down ...
by rpdom
Sat Jun 28, 2014 5:20 pm
Forum: Troubleshooting
Topic: Help me recover these deleted files!
Replies: 8
Views: 2872

Re: Help me recover these deleted files!

If fsck found any fragments of files that it couldn't identify, it may have stored them in /.lost+found with a name like #000012345, which would be the inode that the file fragment is stored at.
by rpdom
Sat Jun 28, 2014 12:39 pm
Forum: Android
Topic: android on debian? and other discussions
Replies: 10
Views: 3308

Re: android on debian

No, that is for different hardware.

It is still running Android on an android compatible platform, even though it is launched from Linux.
by rpdom
Sat Jun 28, 2014 12:31 pm
Forum: Troubleshooting
Topic: Low Power - Overheat?
Replies: 21
Views: 2704

Re: Low Power - Overheat?

mimi123 wrote:A note. The Pi can run at 3.3V . It is the minimal voltage.
Yes, if you remove the 3.3V regulator and feed the 3.3V directly in.

You need a bit more than that if you leave the regulator in place.
by rpdom
Sat Jun 28, 2014 7:03 am
Forum: General discussion
Topic: armel vs armhf
Replies: 3
Views: 3723

Re: armel vs armhf

Because Debian decided that their armhf release only supports ARMv7 and above, while the Pi is ARMv6. This is because the ARMv7 has a larger instruction set than the ARMv6 (more floating point stuff, Thumb2, etc). armel supports both types of ARM but won't use the advanced features of the ARMv7 or e...
by rpdom
Sat Jun 28, 2014 5:19 am
Forum: Troubleshooting
Topic: Low Power - Overheat?
Replies: 21
Views: 2704

Re: Low Power - Overheat?

I should probably comment; what I have witnessed might indicate a LAN/USB overheat as oppose as an actual CPU crash, because what I have witnessed is loss of remote connectivity over SSH and sometimes if I leave it 5 minutes and try to reconnect it responds again just fine! Presumably it had a peri...
by rpdom
Sat Jun 28, 2014 4:54 am
Forum: General discussion
Topic: Very Long-Term Raspberry Pi Use
Replies: 12
Views: 2582

Re: Very Long-Term Raspberry Pi Use

As dougie says, it sounds like an ideal application for the Compute Module, however as producing your own PCB isn't currently an option, you're best sticking with the Pi. Having a read-only filesystem will protect the SD card from wearing out, but you will need to store some information somewhere. Y...
by rpdom
Fri Jun 27, 2014 8:44 pm
Forum: General discussion
Topic: Raspberry pi codec license does not work now
Replies: 23
Views: 5339

Re: Raspberry pi codec license does not work now

Is it possible for someone to change the serial number by hacking into the rpi system? Unlikely the serial number is burnt into the EEPROM and cannot be changed afterwards (well it can be spoofed but only dom knows how). Eh? Spoofing the serial is three lines of code. http://www.raspberrypi.org/for...
by rpdom
Fri Jun 27, 2014 8:40 pm
Forum: Troubleshooting
Topic: Low Power - Overheat?
Replies: 21
Views: 2704

Re: Low Power - Overheat?

Some of the very early Pi's did suffer from hot USB chips though, but that shouldn't cause failures. I've read Model A user's experiences contrary to that. As I have gathered from other Model A users is that there is one chip which handles both LAN and USB and some users have said this could get ve...
by rpdom
Fri Jun 27, 2014 8:13 pm
Forum: Troubleshooting
Topic: Low Power - Overheat?
Replies: 21
Views: 2704

Re: Low Power - Overheat?

You haven't given us any figures to go on, like test point voltages, current consumption or the temperatures you get with vcgencmd.
by rpdom
Fri Jun 27, 2014 6:43 pm
Forum: Beginners
Topic: Can I Just Switch SDCards Between ModelB v1 & Lastest Model?
Replies: 5
Views: 674

Re: Can I Just Switch SDCards Between ModelB v1 & Lastest Mo

vipersnake wrote:cool so if i update the firmware then there should be no problems them right?
Right :)

I keep my firmware/kernel up to date with apt-get update;apt-get upgrade and I can switch my SD card from a first generation model B to the very latest model B without any problems.
by rpdom
Fri Jun 27, 2014 6:39 pm
Forum: General discussion
Topic: Reboot when trying to use camara
Replies: 8
Views: 1460

Re: Reboot when trying to use camara

First thought: Power. Something like 90%+ of issues with Raspberry Pis failing to boot or rebooting unexpectedly are due to inadequate power supplies or cheap microUSB power cables. The camera uses virtually no power when it is idle, but needs quite a lot of power when it is active. It could be that...
by rpdom
Fri Jun 27, 2014 7:22 am
Forum: Bare metal, Assembly language
Topic: Assembly Language w/ Gertboard
Replies: 10
Views: 3099

Re: Assembly Language w/ Gertboard

mimi123 wrote:We threat the Acorn RISC Machine as a microcontroller
Acorn? Not unless you are stuck in a time warp ;)
by rpdom
Thu Jun 26, 2014 11:12 am
Forum: General discussion
Topic: Raspberry pi codec license does not work now
Replies: 23
Views: 5339

Re: Raspberry pi codec license does not work now

Do you know you can put both licenses in the same file, so the SD card will work in either Pi?

Code: Select all

decode_MPG2=0x15670fab,0xfb65e94d
decode_WVC1=0x3017b35a,0x152e6042
The codecs are tied to the serial number of the Pi and nothing else. Passwords won't make any difference.
by rpdom
Wed Jun 25, 2014 6:47 pm
Forum: General discussion
Topic: use RPi with USB HDD only
Replies: 7
Views: 2036

Re: use RPi with USB HDD only

mimi123 wrote:If you have a Model A , you may consider booting as an USB slave.
Which isn't much use. All you can then do is read/write the SD card (which can't have a PI OS on to start with), then pull the USB and reboot from SD.
by rpdom
Wed Jun 25, 2014 3:08 pm
Forum: Troubleshooting
Topic: Can not shutdown the eth0 interface?
Replies: 21
Views: 6568

Re: Can not shutdown the eth0 interface?

Hmm, those commands worked for me.

Try ifdown --force eth0 to override some of the checks.
by rpdom
Wed Jun 25, 2014 2:30 pm
Forum: C/C++
Topic: Raspberry Pi too slow to program on with Codeblocks
Replies: 12
Views: 4341

Re: Raspberry Pi too slow to program on with Codeblocks

As has been mentioned many times, the 700MHz ARM CPU on the Pi has about the same processing power as a 400MHz Pentium CPU.

Don't expect blistering performance from a £30 general purpose computer.

It is possible to tweak it with overclocking and stuff to make it a bit faster.
by rpdom
Wed Jun 25, 2014 2:27 pm
Forum: Advanced users
Topic: Running BASH commands via the GPIO
Replies: 17
Views: 9987

Re: Running BASH commands via the GPIO

Sorry, I didn't mean to say that the way the button was wired determines if you should use internal or external. I meant that the way the button is wired (to 3.3V or 0V) determines if you should use pull-up or pull-down. You can use internal or external as you want, although the internal pull resist...
by rpdom
Wed Jun 25, 2014 2:18 pm
Forum: Troubleshooting
Topic: Can not shutdown the eth0 interface?
Replies: 21
Views: 6568

Re: Can not shutdown the eth0 interface?

You can change the last part of the MAC address with that method, but the hardware/firmware will not let you change the manufacturer part that way. No that is incorrect. You can set any MAC you like with: ifconfig eth0 hw ether 00:11:22:33:44:55 /Ronny Nilsson That will not work, because I can't sh...
by rpdom
Wed Jun 25, 2014 11:27 am
Forum: Troubleshooting
Topic: Can not shutdown the eth0 interface?
Replies: 21
Views: 6568

Re: Can not shutdown the eth0 interface?

I sit semi-corrected.

You can set almost any MAC address you like.

Code: Select all

ifconfig eth0 hw ether 31:41:59:6f:26:c1
SIOCSIFHWADDR: Cannot assign requested address

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