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by Wendo
Thu Dec 06, 2012 6:17 pm
Forum: Troubleshooting
Topic: /var/log takes up alot of space
Replies: 8
Views: 11757

Re: /var/log takes up alot of space

As a more permanent solution (since they will likely just grow again), you probably want to look at logrotate and configure it to compress or delete that log more regularly. Compressing a straight log file will drop it's size by 90%
by Wendo
Thu Dec 06, 2012 6:13 pm
Forum: Troubleshooting
Topic: Some GPIO pins do not work
Replies: 12
Views: 2654

Re: Some GPIO pins do not work

If you connected them to 7V they are dead.

The easiest test is probably to setup a simple circuit with an LED and a resister and see if they can toggle the LED, but more than likely you have fried those pins
by Wendo
Sun Dec 02, 2012 3:32 am
Forum: HATs and other add-ons
Topic: Question about Atmel chip
Replies: 66
Views: 9872

Re: Question about Atmel chip

If you're uploading to the gertboard ATmega chip via a windows PC and a programmer, you need to tell the Windows Arduino IDE that your ATmega is running at 12Mhz rather than the standard for Arduino of 16Mhz. Otherwise the baud rate will be wrong on the programmed chip. You can do that by adding the...
by Wendo
Sun Dec 02, 2012 1:03 am
Forum: Troubleshooting
Topic: raspbian: ifconfig <interface> down - does nothing
Replies: 6
Views: 6109

Re: raspbian: ifconfig <interface> down - does nothing

Did you make sure to put sudo in from of the commands?

You need root priviledges to use ifconfig
by Wendo
Sat Dec 01, 2012 4:01 am
Forum: Raspbian
Topic: Lack of RAID1 and RAID10 in 3.2.27
Replies: 3
Views: 1218

Re: Lack of RAID1 and RAID10 in 3.2.27

The CPU power required to do mirroring and striping is so low you shouldn't notice it on the Pi.

RAID5 or RAID6 would probably have a noticeable affect though
by Wendo
Fri Nov 30, 2012 2:29 am
Forum: HATs and other add-ons
Topic: Question about Atmel chip
Replies: 66
Views: 9872

Re: Question about Atmel chip

Sorry, I don't understand. The Pi has 1 serial port in the GPIO header. What you connect to it is up to you
by Wendo
Fri Nov 30, 2012 2:14 am
Forum: HATs and other add-ons
Topic: Question about Atmel chip
Replies: 66
Views: 9872

Re: Question about Atmel chip

The serial port on the Pi is /dev/ttyAMA0

You'll need to disable the console output on it before you try to use it
by Wendo
Tue Nov 27, 2012 8:00 am
Forum: General discussion
Topic: VLC and mpeg4 part 2 playback
Replies: 3
Views: 1291

Re: VLC and mpeg4 part 2 playback

VLC doesn't use the hardware to decode anything, so unless you can convince the VLC devs to add hardware decoding for the pi you're probably not going to get very far
by Wendo
Fri Nov 23, 2012 5:05 am
Forum: Raspbian
Topic: chromiium 22 packages available for testing
Replies: 11
Views: 4143

Re: chromiium 22 packages available for testing

Instant segfault here too on a rev1 pi with a well used raspbian install
by Wendo
Fri Nov 23, 2012 4:50 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: pin 11 isn`t working
Replies: 3
Views: 840

Re: pin 11 isn`t working

Yup, sorry, was thinking pin 13 now that I look it up.

Most likely the pin is fried then would be my guess :(

I've managed to blow a pin on one of my pi's somehow, it's now running as a media center
by Wendo
Thu Nov 22, 2012 6:55 pm
Forum: Networking and servers
Topic: Pi not setting correct IP address
Replies: 9
Views: 1736

Re: Pi not setting correct IP address

That address is not 'incorrect' as such, it's the localhost address, and it's normal for the lo interface to have it.

When running ifconfig you need to be looking for the eth0 interface

'ifconfig eth0' will show you only that interface, and be more useful to you
by Wendo
Wed Nov 21, 2012 4:44 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: pin 11 isn`t working
Replies: 3
Views: 840

Re: pin 11 isn`t working

From memory pin 11 was remapped with the rev2 boards, so you're probably flipping the wrong GPIO pin on a rev 2 board.

What are you using to access the pins?
by Wendo
Wed Nov 21, 2012 4:41 am
Forum: Networking and servers
Topic: My rPi is under attack
Replies: 29
Views: 12100

Re: My rPi is under attack

Depending on your router/firewall you may also be able to firewall countries. So you could drop connections from everywhere but your home country. Certainly forwarding a different port number will cut down heavily on this
by Wendo
Thu Nov 15, 2012 4:43 am
Forum: HATs and other add-ons
Topic: Minicom problem with AVR?
Replies: 5
Views: 2209

Re: Minicom problem with AVR?

I can confirm this happens even with the right speed set. I saw the same thing when testing my setup and have had it happen on occasion while doing additional programming of the AVR (talking to the ADC and DAC over the secondary SPI of the AVR)
by Wendo
Mon Nov 12, 2012 7:00 am
Forum: Troubleshooting
Topic: I/O terribly slow
Replies: 4
Views: 2645

Re: I/O terribly slow

Class 4's traditionally have better random I/O patterns though, as there is a minimum specified in the class 4 spec, but none specified in the class 10 spec
by Wendo
Mon Nov 12, 2012 6:56 am
Forum: General discussion
Topic: HELP !! I try everything ..
Replies: 2
Views: 580

Re: HELP !! I try everything ..

DTS isn't hardware decoded, and that's probably what it's choking on, try re-encoding with a different audio track
by Wendo
Thu Nov 08, 2012 6:29 am
Forum: Networking and servers
Topic: mysql database wont work with webserver
Replies: 5
Views: 2198

Re: mysql database wont work with webserver

But your best bet is to make mysql bind to an external network interface first, since by default it doesn't

Look for skip-networking in mysql's config file
by Wendo
Thu Nov 08, 2012 6:27 am
Forum: Networking and servers
Topic: Local Network Connection Problems
Replies: 2
Views: 851

Re: Local Network Connection Problems

127.0.0.1 is whats known as the localhost address. Every single computer with a network stack has that address, so no matter what computer you type it on, you're talking to that computer. As you've discovered, to access something across a network you need an IP address tied to a network interface ot...
by Wendo
Sat Nov 03, 2012 8:33 pm
Forum: General discussion
Topic: how much current do I need
Replies: 17
Views: 6364

Re: how much current do I need

Thats max power, not what it will actually use. I'm happily powering my Edimax EW-7811un from the pi itself on a rev 1 board, so that's absolute proof it doesn't need 500ma, the polyfuses only allow 100ma per port
by Wendo
Sat Nov 03, 2012 6:55 am
Forum: Networking and servers
Topic: Boot from LAN
Replies: 9
Views: 23658

Re: Boot from LAN

Etherboot won't work, don't even get your hopes up. Currentely, and for the forseeable future, you CAN NOT boot from anything other than the SD card. I'm not going to say it's impossible, but it's pretty damn close. The reason is that, the GPU is what actually boots the system. When it does that the...
by Wendo
Fri Nov 02, 2012 7:50 pm
Forum: Troubleshooting
Topic: 2 not upgraded
Replies: 2
Views: 593

Re: 2 not upgraded

That by itself is fine, and normal even.

You can do apt-get dist-upgrade instead but there isn't any real reason to do so unless you're upgrading between major debian releases
by Wendo
Thu Nov 01, 2012 7:22 am
Forum: Raspbian
Topic: Read hostname from config file
Replies: 52
Views: 8184

Re: Read hostname from config file

You could edit /etc/init.d/hostname.sh and make that point to /boot/hostname rather than /etc/hostname.

No idea if it would in fact work, but I can't see why it woulnd't
by Wendo
Thu Nov 01, 2012 6:34 am
Forum: General discussion
Topic: Why Default Answer is "sounds like power issue"?
Replies: 14
Views: 2076

Re: Why Default Answer is "sounds like power issue"?

It's because, at least in the very early days, power supply _was_ the problem in probably 90% of cases. Cell phone charges really aren't designed to be real power supplies for devices, and so they caused a LOT of problems. Obviously in your case that wasn't the issue, and it's good you found the sol...
by Wendo
Thu Nov 01, 2012 6:29 am
Forum: General discussion
Topic: Multiple raspberry pi's as server?
Replies: 8
Views: 7169

Re: Multiple raspberry pi's as server?

A high performance cluster (which is what you're talking about) doesn't work to make a single program like apache run faster. It works by taking a single large job, with a large dataset, and splitting that job and dataset so each node can perform a small section of the total job and the results can ...
by Wendo
Wed Oct 31, 2012 4:22 am
Forum: HATs and other add-ons
Topic: Gertboard and D5 not working
Replies: 8
Views: 2034

Re: Gertboard and D% not workig

You don't mention what revision board you have, but my guess is it's a rev2 board in which GPIO21 is replaced by GPIO27.

You'll have to edit the test programs to update the code to flip GPIO27 instead of GPIO21 is that's the case

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