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by fredhatfield
Fri Jul 24, 2015 8:22 pm
Forum: Beginners
Topic: installing pifacecad problems
Replies: 11
Views: 1636

Re: installing pifacecad problems

Successfully reinstalled sysvinit-utils but result is still the same. When I do: pidof lirc I get no response at all, just a return to command line prompt. Then I try : sudo apt-get install pidof and I get: E: Unable to locate package pidof I did this from the keyboard directly connected to the Rpi ...
by fredhatfield
Thu Jul 23, 2015 6:24 am
Forum: Beginners
Topic: installing pifacecad problems
Replies: 11
Views: 1636

Re: installing pifacecad problems

Now I am to run a test to see if the previous command worked by typing: pidof lirc to see if the lirc processes are running. I get no results and the tutorial says that if "pidof" is not installed I should install it by typing: sudo apt-get install pidof I get: E: unable to locate package pidof Now ...
by fredhatfield
Sun Jul 19, 2015 12:00 am
Forum: Beginners
Topic: installing pifacecad problems
Replies: 11
Views: 1636

Re: installing pifacecad problems

Found one problem....

The modprobe command did not work when doing it from SSH. When I went to the direct keyboard, it DID work.

Will investigate further. Thanks for the help.

Fred.
by fredhatfield
Sat Jul 18, 2015 9:19 pm
Forum: Beginners
Topic: installing pifacecad problems
Replies: 11
Views: 1636

Re: installing pifacecad problems

The suggestion shows lirc but does not find lirc_rpi.
I still get the error message about "device not exist"

Fred.
by fredhatfield
Sat Jul 18, 2015 4:00 am
Forum: Beginners
Topic: installing pifacecad problems
Replies: 11
Views: 1636

installing pifacecad problems

Just received a pifacecad board for my RPI 2. I have connected it to the PI as detailed. Everything seems to be okay, even lights up with displayed information as described in the element14 setup manual. But when I get to the part to use pin 23 by entering: sudo modprobe lirc_rpi gpio_in_pin=23 I ge...
by fredhatfield
Thu Mar 12, 2015 9:16 pm
Forum: Troubleshooting
Topic: Attached HDD dump program
Replies: 0
Views: 234

Attached HDD dump program

I have used "hd /dev/sda" to get a disk dump from my Attached HD
on my RSPI 1 with no problems. Now that I have graduated to a RSPI 2,
when I do a dump, all the non-hex characters are underlined. I cannot
find a way to inhibit the underlining. Does anyone have a suggestion?

Fred.
by fredhatfield
Sat Nov 22, 2014 3:06 pm
Forum: Automation, sensing and robotics
Topic: Beginner using "How To Build A Robot" magazine (Magician Kit
Replies: 7
Views: 1392

Re: Beginner using "How To Build A Robot" magazine (Magician

Thanks guys! I have scanned most of the chassis available and find that most of them have no upper deck. Consequently, you would expect to find someone selling upper decks as a "stand alone" item -- but I have not seen any product like that anywhere. Of course, I could buy another chassis kit just t...
by fredhatfield
Fri Nov 21, 2014 1:30 am
Forum: Automation, sensing and robotics
Topic: Beginner using "How To Build A Robot" magazine (Magician Kit
Replies: 7
Views: 1392

Beginner using "How To Build A Robot" magazine (Magician Kit

I found a magazine on B&N newsstand titled "How To Build A Robot", evidently originated in the UK. I have some past experience with the Raspi and I thought this would be a good project to build and learn about sensors, etc... I found it to be easy to read and the suggested hardware kit seemed to be ...
by fredhatfield
Fri Apr 25, 2014 9:38 am
Forum: Beginners
Topic: Read-only file system
Replies: 3
Views: 2968

Re: Read-only file system

Thank you, thank you. Just beginning to get into the "thick of Linux" and I appreciate the help. The last line of "mount | grep " /" " does show (........."errors=remount-ro), so that explains the status of the system as read-only. I have made so many errors that I am going to start over with a new ...
by fredhatfield
Fri Apr 25, 2014 7:36 am
Forum: Beginners
Topic: Read-only file system
Replies: 3
Views: 2968

Read-only file system

I am attempting to correct an entry in the /etc/fstab file that I created earlier, using vim. Now when I use "sudo vim /etc/fstab", i get a file that says it is "read-only" and can't be changed. If I use "sudo chmod 664 /etc/fstab" to change the permissions, I get a message: "changing permissions : ...
by fredhatfield
Wed Apr 23, 2014 12:26 pm
Forum: Troubleshooting
Topic: adding external hard drive
Replies: 3
Views: 611

Re: adding external hard drive

Thanks, guys! Actually discovered that right after posting the question... (happens a lot!) Now I have another problem -- discovered that my original creation of /dev/fstab had an incorrect entry, so I wanted to edit it correctly but every time I tried to use vim, it comes up as a read-only file, so...
by fredhatfield
Sun Apr 20, 2014 10:03 am
Forum: Troubleshooting
Topic: adding external hard drive
Replies: 3
Views: 611

adding external hard drive

I am attempting to add a Western Digital Hard Drive to my RPI. I understand that formatting it in Ext4 format is the best for use on the RPI. I have succesfully attached it via the USB port and the RPI sees it there. However, to format it requires it to be unmounted -- and my RPI constantly tells me...
by fredhatfield
Sat Feb 01, 2014 4:29 pm
Forum: Beginners
Topic: Interface a Pi to a plotter
Replies: 10
Views: 4637

Re: Interface a Pi to a plotter

I see some cables on Amazon that connect a printer connector to a USB input. There are no further details about this cable other than specifying that it could be used on a laptop or similar computer that does not have an LPT port. It appears that software would be needed to create the signals requir...
by fredhatfield
Thu Jan 30, 2014 9:58 pm
Forum: Beginners
Topic: Interface a Pi to a plotter
Replies: 10
Views: 4637

Interface a Pi to a plotter

I have a Comrex 1810 plotter that I would like to control with a Raspberry Pi. It is 1985 vintage but looks to be in good shape. Originally I could connect it to the printer output of a PC and it worked great that way. Now I would like to use it again, only connect it to a RPI. I assume I would have...
by fredhatfield
Mon May 06, 2013 7:32 pm
Forum: Staffroom, classroom and projects
Topic: Installing RPi.Gpio for python
Replies: 27
Views: 33615

Re: Installing RPi.Gpio for python

I have been having trouble getting the initial load of GPIO into Python. When I type: import RPi.GPIO as GPIO I get an error message "syntax error" pointing out "import" -- this is when I am using the graphical interface IDLE. I tried all kinds of things but to no avail. After 2 days of frustration,...
by fredhatfield
Mon Feb 04, 2013 10:44 pm
Forum: General discussion
Topic: STICKY: Introduce yourself!
Replies: 3562
Views: 126537

Re: Introduce yourself!

Hello to all you RPI'ers. My name is Fred Hatfield and I have a long, long history in electronics, computers, amateur radio, cryptography and many technical fields. I started out rewiring old pinball machines to create tic-tac-toe games when I was a kid, taking old radios and adding machines apart t...
by fredhatfield
Fri Jan 18, 2013 4:19 am
Forum: Python
Topic: Displaying Content of Python Files
Replies: 9
Views: 1547

Re: Displaying Content of Python Files

AHA! Thanks, I found the File Manager.... Just some startup aches here. But I am tenacious and determined to become fluent with this little gem. Starting from scratch is always murderous for a noobie. Thank you, thank you, thank you! My newest problem is getting the wifi going, I posted that one in ...
by fredhatfield
Fri Jan 18, 2013 3:45 am
Forum: Python
Topic: Displaying Content of Python Files
Replies: 9
Views: 1547

Re: Displaying Content of Python Files

any text editor, idle, or the Python desktop links will do it. For a console I like nano (VIM is probably better) To just read nano pythonprogram.py If you get permission issues sudo nano pythonprogram.py From the desktop just open the python icons and choose file much like in Windows or Mac to ope...
by fredhatfield
Fri Jan 18, 2013 3:36 am
Forum: Python
Topic: Displaying Content of Python Files
Replies: 9
Views: 1547

Re: Displaying Content of Python Files

-rst- wrote:'File Manager'?
File Manager will display the file? Is this what you are suggesting? How do I
get to File Manager?
by fredhatfield
Fri Jan 18, 2013 2:24 am
Forum: Beginners
Topic: Problem with internet
Replies: 3
Views: 717

Re: Problem with internet

I read the suggested file but nowhere did it address the listed problem. I have the exact same problem with a Belkin Wireless N Nano Usb Adapter. If I hot plug disconnect the adapter, the pi reboots and I get the same result when I try to install the adapter -- it starts out showing a connection but...
by fredhatfield
Thu Jan 17, 2013 10:57 am
Forum: Python
Topic: Displaying Content of Python Files
Replies: 9
Views: 1547

Re: Displaying Content of Python Files

How do I get the python files to display as icons?

When I go to the python section, I always get a text listing of
Program names that can only be executed when I choose one.

Thanks for your response.

Fred.
by fredhatfield
Thu Jan 17, 2013 4:59 am
Forum: Python
Topic: Displaying Content of Python Files
Replies: 9
Views: 1547

Displaying Content of Python Files

I have successfully established wheezy on my Pi. I would like to study the python games on the
python section -- is there a way to show the actual python code from the files? Is there a command that will display the game file contents on the screen?

Thanks for any suggestions.

Fred.

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