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by rpdom
Sat Mar 23, 2013 5:29 pm
Forum: Troubleshooting
Topic: no boot with raspbian but ok with Arch Linux?
Replies: 11
Views: 1645

Re: no boot with raspbian but ok with Arch Linux?

I have an old Pi (nearly a year old now), so don't need the new files, however the files I do have are slightly different sizes to yours. I run rpi_update occasionally to pick up the latest files.
by rpdom
Sat Mar 23, 2013 5:02 pm
Forum: Troubleshooting
Topic: no boot with raspbian but ok with Arch Linux?
Replies: 11
Views: 1645

Re: no boot with raspbian but ok with Arch Linux?

If you have a newer Pi you probably need the latest boot files. The latest Raspbian image has those files (the bootcode.bin, fixup*.dat and start*.elf files). Try that image first. If it works you could try copying those files off, then installing your preferred image and putting those fles back on ...
by rpdom
Sat Mar 23, 2013 5:10 am
Forum: Networking and servers
Topic: Is Wake on Lan command working in Rasbian PI ?????
Replies: 4
Views: 1645

Re: Is Wake on Lan command working in Rasbian PI ?????

Raspberry Pi does not support wakeonlan to wake itself.

It can run the wakeonlan command to wake other computers that do support it.
by rpdom
Sat Mar 23, 2013 5:04 am
Forum: General discussion
Topic: Getting rid of startup password page and auto start
Replies: 7
Views: 1400

Re: Getting rid of startup password page and auto start

If the Pi is just being an MP3 player with no screen, then X is not required. A simple shell script to play MP3s in a loop, or randomly, can be set to run at start up in /etc/rc.local. No need to worry about logins. You will need to make a way to shut down the Pi safely when it is done with. Perhaps...
by rpdom
Sat Mar 23, 2013 4:55 am
Forum: Automation, sensing and robotics
Topic: 5.2v Regulator
Replies: 3
Views: 1526

Re: 5.2v Regulator

The recommended working voltage for the Pi is 5V +/- 5%. Which means anywhere between 4.75V and 5.25V. In practice the lower voltages tend to be unreliable, so I'd recommend a minimum of 4.85V. 5.2V should be fine. It's not outside the specs - unless your supply drifts a little higher. To be safe, f...
by rpdom
Fri Mar 22, 2013 9:07 pm
Forum: Raspbian
Topic: Boot from USB stick?
Replies: 74
Views: 226390

Re: Boot from USB stick?

If the model A could be booted from a PC (ideally a Debian Linux system) via USB, that could make some of the bare metal testing a lot less tedious without all the switching of the SD card. Just compile appropriate image on PC and boot Pi via USB. I expect it wouldn't be worth the effort to set up f...
by rpdom
Fri Mar 22, 2013 7:20 pm
Forum: Troubleshooting
Topic: hardware bug ethernet/hdmi?
Replies: 15
Views: 2358

Re: hardware bug ethernet/hdmi?

Sounds like a grounding problem, without any cable (but power) plugged in the PI isn't connected to earth in any way. Normally that isn't a problem though. I'd agree with this. However the ethernet cable is totally isolated from ground and everything else through the transformers in the socket - un...
by rpdom
Fri Mar 22, 2013 3:39 pm
Forum: Beginners
Topic: 5V and ground pins
Replies: 7
Views: 4406

Re: 5V and ground pins

Hove wrote:Connecting 5V to the GPIO 5V pin in almost certainly safe - it bypasses a fuse which I think has been dropped in the design anyway.
Nope. The fuse F3 is still there. The fuses that were removed were F1 and F2 on the USB 5V lines.
by rpdom
Fri Mar 22, 2013 6:16 am
Forum: Troubleshooting
Topic: I messed up... rc.local freezes
Replies: 6
Views: 5010

Re: I messed up... rc.local freezes

If you have a Windows machine that you can edit cmdline.txt on, you could try something along the lines of the (fairly standard) recovery method detailed by Joe Schmoe here http://www.raspberrypi.org/phpBB3/viewtopic.php?t=29329&p=257826#p257892 . Don't do the bit about editing /etc/inittab (step 3 ...
by rpdom
Thu Mar 21, 2013 8:52 pm
Forum: Beginners
Topic: What is the difference between "~" and "/"?
Replies: 13
Views: 2386

Re: What is the difference between "~" and "/"?

ah, so it looks like my home directory is "/www." pi@raspberrypi:~$ echo $PWD /var/www Is this normal Apache behavior? Can I move this all to a folder called "webserver" or something, and control all these pages from there? Using /var/www for the base directory for the webserver is normal Apache be...
by rpdom
Thu Mar 21, 2013 8:41 pm
Forum: Troubleshooting
Topic: Raspberry Pi won't give any output.. where to start?
Replies: 11
Views: 7369

Re: Raspberry Pi won't give any output.. where to start?

I downloaded win32diskimager-v0.7-binary.zip and 2012-12-16-wheezy-raspbian.zip. after unzipping the diskimaging file I had Win32DiskImager.exe. I used this to write to the SD card. My green light flashes once only. then nothing. Try using the latest Raspbian image. The memory chip on some of the l...
by rpdom
Thu Mar 21, 2013 7:19 pm
Forum: General discussion
Topic: Never used linux "building" a pc
Replies: 30
Views: 3754

Re: Never used linux "building" a pc

I'm happy to say that both my ISPs provide POP3 email alongside their webmail offerings. :)
by rpdom
Thu Mar 21, 2013 6:42 pm
Forum: Automation, sensing and robotics
Topic: Inexpensive Battery Power for Pi
Replies: 7
Views: 10207

Re: Inexpensive Battery Power for Pi

Congratulations on getting that running :) Just a few things though. The 7805 isn't a good choice of regulator. For one thing it is supposed to be run from a minimum of 7V supply, otherwise it will tend to provide under 5V output, or drop out completely. There are some low dropout regulators that wi...
by rpdom
Thu Mar 21, 2013 4:45 pm
Forum: Beginners
Topic: What is the difference between "~" and "/"?
Replies: 13
Views: 2386

Re: What is the difference between "~" and "/"?

Looks like "www" may be my home directory: You can find out what the real name of your home directory (when you are in it) with "echo $PWD", which shows the path of your current working directory. Also, how do I know if a file is a syslink? That's symlink (short for Symbolic Link). That shows up wh...
by rpdom
Thu Mar 21, 2013 10:57 am
Forum: Beginners
Topic: Software releases
Replies: 5
Views: 770

Re: Software releases

Packages left over from previous updates will be left on the system, unless another package is installed that replaces it or conflicts with it. Sometimes new versions of packages will have "Conflict" or "Replaces" attributes set.

I don't know the status of Pulseaudio, as I don't use it at all.
by rpdom
Thu Mar 21, 2013 6:55 am
Forum: Beginners
Topic: apt-get update VS new SD card image
Replies: 1
Views: 454

Re: apt-get update VS new SD card image

As you haven't said which opertaing system you are running, I'm going to assume you are using the recommended Raspbian image downloaded from the this site. If so, your /etc/apt/sources.list should look something like this: deb http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free...
by rpdom
Thu Mar 21, 2013 6:43 am
Forum: Troubleshooting
Topic: HDMI failure - is it hardware?
Replies: 6
Views: 1086

Re: HDMI failure - is it hardware?

If you have the Hynix chip, it may not work with older boot code meant only for the broadcom chipset. I ran into this issue when a web link directed me to a 2012-02-xx version instead of a 2013-02-xx version. Using the 2013 image allowed me to run with the Hynix chip. I assume that the broadcom chi...
by rpdom
Wed Mar 20, 2013 6:40 am
Forum: Other projects
Topic: Raspberry pi as a Wake on Lan source
Replies: 65
Views: 84544

Re: Raspberry pi as a Wake on Lan source

Another basic question.... GNU Nano. How do I make a #? That's remarking something out, right? Like REM or :: on a Windows command prompt? (It must be, of course.) I just don't see what key command does that on Nano. I don't use nano much, but general I just use the # key ;) It could be that your k...
by rpdom
Wed Mar 20, 2013 6:35 am
Forum: Beginners
Topic: I cannot log in
Replies: 14
Views: 2237

Re: I cannot log in

This is a question that has been asked many times before. When you type the password, nothing is displayed on the screen for security reasons. Just type it in blindly and press enter. If that doesn't work, it is possible that you are having keyboard problems. Try typing the password at the login pro...
by rpdom
Wed Mar 20, 2013 6:29 am
Forum: Beginners
Topic: Root login?
Replies: 2
Views: 5704

Re: Root login?

On the RasPi, when I try to download programs thru apt-get it says access to such-and-such a file was denied then asks if I am root. How do you login as root on Raspbian Wheezy? Usually, you don't. Instead, you put "sudo" in front of the command to make it run as root. pi@raspi1:~$ sudo apt-get upd...
by rpdom
Wed Mar 20, 2013 6:23 am
Forum: Beginners
Topic: What is the difference between "~" and "/"?
Replies: 13
Views: 2386

Re: What is the difference between "~" and "/"?

-rw-r--r-- 1 pi root 220 Mar 19 11:43 index.html Ok, that's a normal file with no links. Perhaps you have two index.html files, or the one in www points at this one. The "1" means only one directory entry. "pi" is the name of the user who owns the file, "root" is group of users who can access the f...
by rpdom
Tue Mar 19, 2013 7:48 pm
Forum: Raspbian
Topic: Very new to this
Replies: 6
Views: 712

Re: Very new to this

The first time you logged in to Raspbian you should have been presented with a menu which would allow you to set things like starting the desktop by default. You can run this again by typing "sudo raspi-config" at the command prompt. If you want to start the desktop from the command prompt, type "st...
by rpdom
Tue Mar 19, 2013 7:42 pm
Forum: Beginners
Topic: What is the difference between "~" and "/"?
Replies: 13
Views: 2386

Re: What is the difference between "~" and "/"?

Thanks much for the replies. This makes a lot of sense! However, I am still confused about why "index.html" shows when I "ls" in my home directory, when it is actually stored in ./www Perhaps it is a linked file. More than one directory entry can point at the same file. If you do a ls -l of the fil...
by rpdom
Tue Mar 19, 2013 5:57 am
Forum: Beginners
Topic: Torrent? Verification?
Replies: 7
Views: 1266

Re: Torrent? Verification?

I did a download and unzip of the image/zip file. When I verified it with the associated exe, the CRC did not match. I down loaded again with the same results. Should I just go ahead and use the image or is there a fix for what I am seeing? Well, there's your problem. You should verify the zip file...

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