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by pwhbeck
Mon Jul 30, 2018 6:19 pm
Forum: Wanted
Topic: 240 volt power supply
Replies: 1
Views: 4611

240 volt power supply

I would like to buy multiple 240 volt power supplies. They are for use at a school in Uganda. I am in California and they would be shipped here so it would be best if they originated in the U.S. Any suggestions?
Thanks,
Peter
by pwhbeck
Tue May 28, 2013 5:15 pm
Forum: General discussion
Topic: Kernel Compile Errors
Replies: 0
Views: 260

Kernel Compile Errors

I apologize if this is a duplicate of my prior posting attempt. I am using the following instructions to do the build: http://mitchtech.net/raspberry-pi-kernel-compile/ I used them a few months ago successfully but now have problems. This error is at the and of the linux compile output: make[1]: Tar...
by pwhbeck
Sat May 11, 2013 5:21 pm
Forum: General discussion
Topic: Strange Time Loss
Replies: 6
Views: 1037

Re: Strange Time Loss

anacron does not appear to be installed but cron is.
Is this part of my problem?
Should I change to anacron? If I should, can you tell me how?
Thank you,
Peter
by pwhbeck
Sat May 11, 2013 5:18 pm
Forum: General discussion
Topic: Strange Time Loss
Replies: 6
Views: 1037

Re: Strange Time Loss

Content of /etc/cron.daily: pi@rpiA /weather $ ls -l /etc/cron.daily total 44 -rwxr-xr-x 1 root root 14985 Dec 24 07:00 apt -rwxr-xr-x 1 root root 314 Nov 16 21:46 aptitude -rwxr-xr-x 1 root root 355 Jun 14 2012 bsdmainutils -rwxr-xr-x 1 root root 256 Oct 30 2012 dpkg -rwxr-xr-x 1 root root 89 May 2...
by pwhbeck
Sat May 11, 2013 4:18 am
Forum: General discussion
Topic: Strange Time Loss
Replies: 6
Views: 1037

Re: Strange Time Loss

Multiple issues/questions: First: I have not defined cron hourly, daily, etc. jobs. Does the time waste still occur? Second: Do the jobs I have defined in sudo crontab wait for 17 minutes before starting? Third: I replaced the RPi with a different one, but with the same sdcard and all my crontab job...
by pwhbeck
Sat May 11, 2013 3:39 am
Forum: General discussion
Topic: Strange Time Loss
Replies: 6
Views: 1037

Strange Time Loss

My RPi is powered on by a digital timer six times a day, 0600, 0900, 1200, 1500, etc. Something is wrong with the time, as shown by the following syslog excerpt from the 0600 boot: May 10 06:17:01 rpiA /USR/SBIN/CRON[1979]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) May 10 06:25:01 rp...
by pwhbeck
Thu Nov 29, 2012 7:57 pm
Forum: General discussion
Topic: Missing 17 minutes
Replies: 11
Views: 1433

Re: Missing 17 minutes

Thnaks again.
I will proceed.
peter
by pwhbeck
Thu Nov 29, 2012 6:52 pm
Forum: General discussion
Topic: Missing 17 minutes
Replies: 11
Views: 1433

Re: Missing 17 minutes

Which is preferred:
sudo halt
or sudo
shutdown -h now
?

Thanks very much for your help.
Peter
by pwhbeck
Thu Nov 29, 2012 6:03 pm
Forum: General discussion
Topic: Missing 17 minutes
Replies: 11
Views: 1433

Re: Missing 17 minutes

It does have internet access. "If the Pi is shut down cleanly it restarts from that time, otherwise from the last 17 minutes past an hour it remembers. Nothing to do with dmesg, the time is stored in /etc/fake-hwclock.data." Does this have anything to do with the hourly setting in /etc/crontab? As i...
by pwhbeck
Tue Nov 27, 2012 12:49 am
Forum: General discussion
Topic: Missing 17 minutes
Replies: 11
Views: 1433

Missing 17 minutes

My Rpi B boots every three hours on the hour when it is powered on by a timer.
But entries in /var/log/messages indicate the first action taking place at 17 minutes after the hour.
Has anyone else seen this?
Thanks,
Peter
by pwhbeck
Thu Nov 08, 2012 7:26 pm
Forum: Linux Kernel
Topic: Default kernel config required
Replies: 7
Views: 10947

Re: Default kernel config required

This bit of information is a true gem. It and the following allowed me to finally build a kernel with the modules I need. http://mitchtech.net/raspberry-pi-kernel-compile/ The new kernel is 5325476 bytes. The one from wheezy-2012-10-28 is 2695192. I added only one module. Any suggestions as to why t...
by pwhbeck
Mon Oct 08, 2012 3:29 pm
Forum: General discussion
Topic: Cron Puzzle
Replies: 4
Views: 767

Re: Cron Puzzle

How do you know? Have you verified that they are indeed booting 17 minutes later? The RPi doesn't have an RTC, so if you are logging times before it has set its clock , the timer could be off if it is setting itself according to (approximately) last shutdown time. I am embarrassed to say I had not ...
by pwhbeck
Mon Oct 08, 2012 3:25 pm
Forum: General discussion
Topic: Cron Puzzle
Replies: 4
Views: 767

Re: Cron Puzzle

Cron starts a scheduler that runs certain jobs at certain times of the day.
Anyway, it is my error but I don't know what yet.
Peter
by pwhbeck
Mon Oct 08, 2012 3:14 am
Forum: General discussion
Topic: Cron Puzzle
Replies: 4
Views: 767

Cron Puzzle

I have two Raspberry Pis, one running 2012-09-18-wheezy-raspbian and one running a wheezy with a kernel I generated using Mitch"s instructions. Both run a my python jpb scheduler from sudo cron. Both are started by receiving power from digital timers, set to power on at 0600, 0900, 1200, 1500, 1800,...
by pwhbeck
Thu Sep 27, 2012 7:36 pm
Forum: General discussion
Topic: Obtain SCSI Module
Replies: 0
Views: 340

Obtain SCSI Module

I need scsi support, including scsi-generic (sg). I compiled a new kernel and included them and it runs but introduced other problems. Is it possible to just download scsi_mod and sg and load them at run time? Can I just get them from my Ubuntu 12 system? I would try but don't know what to get or ho...
by pwhbeck
Tue Sep 11, 2012 10:36 pm
Forum: General discussion
Topic: crontab MAILTO=
Replies: 5
Views: 1947

Re: crontab MAILTO=

Thanks very much.
Peter
by pwhbeck
Tue Sep 11, 2012 10:19 pm
Forum: General discussion
Topic: crontab MAILTO=
Replies: 5
Views: 1947

Re: crontab MAILTO=

alexeames wrote:Do you need to install a mail server? Not sure if there's one installed by default.
I don't know. I guess that is my question.
Peter
by pwhbeck
Tue Sep 11, 2012 2:14 am
Forum: General discussion
Topic: crontab MAILTO=
Replies: 5
Views: 1947

crontab MAILTO=

I edited the user pi crontab and added MAILTO=pwhbeck@gmail.com
but I do not get mail when my cron jobs run.
Am I missing a required service?
Thanks,
Peter
by pwhbeck
Mon Aug 27, 2012 5:09 pm
Forum: General discussion
Topic: SCSI Generic - Take 2
Replies: 7
Views: 2344

Re: SCSI Generic - Take 2

@pwhbeck I suspect your problem is that SCSI SG support is not set in the kernel you are using (apologies if you already know this) To check this you can: 1) zcat /proc/config.gz > ~/config.txt 2) grep "_SG" ~/config.txt I suspect you will see in the output: # CONFIG_CHR_DEV_SG is not set If this i...
by pwhbeck
Mon Aug 27, 2012 4:27 pm
Forum: General discussion
Topic: SCSI Generic - Take 2
Replies: 7
Views: 2344

Re: SCSI Generic - Take 2

"... so SCSI appears to be a protocol as well as or instead of a hardware interface."
I don't know for sure but think you are right on. I presume it is the SCSI protocol over USB.
Thanks for your reply.
Peter
by pwhbeck
Mon Aug 27, 2012 3:00 am
Forum: General discussion
Topic: SCSI Generic - Take 2
Replies: 7
Views: 2344

SCSI Generic - Take 2

I asked this before but botched it and will try again. Am running 2012-07-15-wheezy-raspbian. I need SCSI Generic support to control an Olympus C-4040Z with gphoto2. I am reasonably sure SCSI Generic is not installed. When I asked about this before, I got the suggestion: "You would need to install t...
by pwhbeck
Sun Aug 26, 2012 4:03 pm
Forum: Raspbian
Topic: New Raspbian Image
Replies: 30
Views: 10961

Re: New Raspbian Image

"You would need to install the scsi modules, like this: http://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=scsi but for Raspbian of course. I haven't had to use scsi myself, so haven't tested this, and don't know whether or not it would work with the Raspber...
by pwhbeck
Fri Aug 24, 2012 3:46 am
Forum: Raspbian
Topic: New Raspbian Image
Replies: 30
Views: 10961

Re: New Raspbian Image

I hope this is getting to the right thread.

If your image includes the SCSI Generic module I would very much like to use it.
My Olympus C-4040Z "webcam" requires this support and I don't know how to install the sg module.

How do I download your image?

Thank you,
Peter
by pwhbeck
Mon Aug 20, 2012 2:42 pm
Forum: General discussion
Topic: Install sg module
Replies: 1
Views: 396

Install sg module

Can someone tell me how to download and install the sg (SCSI Generic) module.
gphoto2 requires it for the camera I am using, an Olympus C-4040Z.
Thank you,
Peter
by pwhbeck
Fri Aug 17, 2012 10:00 pm
Forum: General discussion
Topic: Edit files on SD card
Replies: 22
Views: 24909

Edit files on SD card

Is it possible to modify files on a Pi SD card by putting the card in a reader and connecting it to a Linux PC or Mac?
I would like to remove the crontab. I think I made an error in something started by cron. The Pi boots but then immediately shuts down.
Thanks,
Peter

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