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by RDK
Thu Mar 12, 2015 5:39 pm
Forum: Beginners
Topic: Can the B+ have both wireless and wired Ethernet connection
Replies: 5
Views: 917

Can the B+ have both wireless and wired Ethernet connection

Folks....Tried searching for this but did not find anything that seemed to match my question. My Pi is happy with a WiFi/wireless USB dongle Ethernet/network connection or with the on-board wired connection. However, when I have both attached to the Pi, only the wired connection gets an address and ...
by RDK
Tue Mar 10, 2015 4:13 pm
Forum: Troubleshooting
Topic: Update/Upgrade killed Python Program
Replies: 9
Views: 985

Re: Update/Upgrade killed Python Program

Folks.....I made the change to the /boot/config.txt and now my program again finds the DS18B20 probes. Thanks for the help.....RDK
by RDK
Tue Mar 10, 2015 6:58 am
Forum: Troubleshooting
Topic: Update/Upgrade killed Python Program
Replies: 9
Views: 985

Re: Update/Upgrade killed Python Program

Guys...OK, if I have time this PM I will take it down, put in the "upgraded OS" SD card, add the line and give it a try. I always have the old SD card as a backup. I guess there are lots of web sites which will need to be updated to include this step as people develop software around the DS18B20 tem...
by RDK
Mon Mar 09, 2015 5:31 pm
Forum: Troubleshooting
Topic: Update/Upgrade killed Python Program
Replies: 9
Views: 985

Update/Upgrade killed Python Program

Folks.....I have a Python program which uses the DS18B20 temperature sensors to record temperatures at several locations in our basement. I have been running the Pi for several weeks with a wireless network connection which was periodically dropping out and causing issues with my program. It was sug...
by RDK
Mon Mar 09, 2015 11:33 am
Forum: Troubleshooting
Topic: Pi loses WiFi periodically and does not recover
Replies: 10
Views: 1309

Re: Pi loses WiFi periodically and does not recover

Dougie.....Oh, good grief. Sorry for my stupidity.....RDK
by RDK
Mon Mar 09, 2015 5:51 am
Forum: Troubleshooting
Topic: Pi loses WiFi periodically and does not recover
Replies: 10
Views: 1309

Re: Pi loses WiFi periodically and does not recover

Hmmmm, When I run "Isusb" I get an error "Command not found". So I ran "apt-get install usbutils" which gave me these messages: sudo apt-get install usbutils Reading package lists... Done Building dependency tree Reading state information... Done usbutils is already the newest version. 0 upgraded, 0...
by RDK
Sun Mar 08, 2015 8:10 pm
Forum: Troubleshooting
Topic: Pi loses WiFi periodically and does not recover
Replies: 10
Views: 1309

Re: Pi loses WiFi periodically and does not recover

Dougie....On second thought, what is the story behind your "power management stuff" comment? Are there system or hardware issues around this subject? How does it relate to my Wi-Fi issue?

Thanks for clarifying this issue.....RDK
by RDK
Sun Mar 08, 2015 5:33 pm
Forum: Troubleshooting
Topic: Pi loses WiFi periodically and does not recover
Replies: 10
Views: 1309

Re: Pi loses WiFi periodically and does not recover

Dougie and Pluggy...Thanks for the ideas. I'll give them a try tomorrow. If all else fails I will start using a wired connection which will require the purchase of a new switch.....RDK
by RDK
Sun Mar 08, 2015 5:05 pm
Forum: Troubleshooting
Topic: Pi loses WiFi periodically and does not recover
Replies: 10
Views: 1309

Pi loses WiFi periodically and does not recover

Folks......I've set up a Pi (B+ / standard Raspbian OS) running a Python program which monitors some temperatures in our cellar. It is working fine most of the time. However, randomly, once in a while, it will lose its WiFi connection which affects some features of my program and kills SSH remote ac...
by RDK
Wed Jan 14, 2015 2:29 pm
Forum: Other projects
Topic: Why Specific GPIO pins??
Replies: 4
Views: 898

Re: Why Specific GPIO pins??

OK, thanks. I'll just use GPIO 4. More of a curiosity than anything else....RDK
by RDK
Wed Jan 14, 2015 5:58 am
Forum: Other projects
Topic: Why Specific GPIO pins??
Replies: 4
Views: 898

Why Specific GPIO pins??

Folks....I'm getting ready to try one of the projects using the DS18B20 temperature sensor. Looking at the web I find lots of references ( https://www.modmypi.com/blog/ds18b20-one-wire-digital-temperature-sensor-and-the-raspberry-pi or https://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18...
by RDK
Wed Jan 07, 2015 8:12 pm
Forum: Beginners
Topic: Pins vs GPIO pins??
Replies: 6
Views: 1724

Re: Pins vs GPIO pins??

OK, thanks. I will approach that project with a bit more confidence.....RDK

ps...I'll check back when I actually have the components and the board working. Or, possible, smoke and fire....
by RDK
Wed Jan 07, 2015 7:43 pm
Forum: Beginners
Topic: Pins vs GPIO pins??
Replies: 6
Views: 1724

Re: Pins vs GPIO pins??

Dougie...I see the diagram and understand the correspondence, BUT I still don't know how to interpret the instructions in the LED project in Chapter 15 of the Raspberry Pi User guide. Which is the correct pin 11? Physical layout number and GPIO designation?...RDK
by RDK
Wed Jan 07, 2015 6:26 pm
Forum: Beginners
Topic: Pins vs GPIO pins??
Replies: 6
Views: 1724

Pins vs GPIO pins??

Folks...I'm confused, not an unusual state for me :-) I'm reading the Raspberry Pi User guide and have arrived to the project (Chapter 15) with the LED's, etc. The author introduces the GPIO connector (40 pins for my B+) and then proceeds to tell me how to set up a simple LED blinker project, but wi...
by RDK
Wed Nov 05, 2014 7:26 am
Forum: General discussion
Topic: CanaKit Raspberry Pi B+ Ultimate Starter Kit
Replies: 3
Views: 1994

Re: CanaKit Raspberry Pi B+ Ultimate Starter Kit

Wow, at £227 in the UK instead of $70 in the USA, I'd be smarter to order from the US and pay postage!!!

Oh well, just a thought, thanks for the reply.....RDK

ps....I did order one for my son at the $70 price in the USA and had it sent to his wife....
by RDK
Wed Nov 05, 2014 6:29 am
Forum: General discussion
Topic: CanaKit Raspberry Pi B+ Ultimate Starter Kit
Replies: 3
Views: 1994

CanaKit Raspberry Pi B+ Ultimate Starter Kit

Folks.....While looking for a Christmas gift for my son in the USA, I found this kit on Amazon USA, CanaKit Raspberry Pi B+ Ultimate Starter Kit (http://www.amazon.com/CanaKit-Raspberry-Ultimate-Starter-Components/dp/B00G1PNG54/ref=sr_1_2?s=pc&ie=UTF8&qid=1415088766&sr=1-2&keywords=raspberry+pi) Is ...
by RDK
Fri Oct 17, 2014 4:45 am
Forum: Beginners
Topic: Powered USB Hub Issues
Replies: 5
Views: 1380

Re: Powered USB Hub Issues

Folks.....I bought a D-Link USB 2 powered hub and it seems to be ok with my B+ Pi, ie no messages during boot up. I will now add another USB memory stick. If there are no follow-up messages on this thread then you can assume it is all working fine,,,,,RDK
by RDK
Wed Oct 15, 2014 7:03 am
Forum: Beginners
Topic: Powered USB Hub Issues
Replies: 5
Views: 1380

Re: Powered USB Hub Issues

Folks...Having pondered my issue with my powered USB hub and my B+ Pi, I'm wondering if:
  • 1. Are there issues with USB 3 devices and the Pi?
    2. Are there issues with USB 3 hubs and the Pi, or more importantly for me, the B+ Pi?
    3. Is there a list of known good powered USB hubs
Thanks....RDK
by RDK
Tue Oct 14, 2014 1:45 pm
Forum: Beginners
Topic: Powered USB Hub Issues
Replies: 5
Views: 1380

Re: Powered USB Hub Issues

Thanks for the reference. I've read through that thread and basically it does not seem to apply to my issue. In my case the Pi's USB ports are all working. I have a 16GB USB memory stick, a USB keyboard and a USB wireless mouse. All are working fine. And, since I fdisk-ed the USB stick via my PC, it...
by RDK
Tue Oct 14, 2014 6:07 am
Forum: Beginners
Topic: Powered USB Hub Issues
Replies: 5
Views: 1380

Powered USB Hub Issues

Folks....I recently bought a powered USB 3.0 hub from Darty in France (IT WORKS brand). When I booted up my Pi, I noticed several messages something like "USB Port 2 over powered...". Unfortunately they went by too fast to get the whole wording. Of course that scared me a bit. So I shutdown and disc...
by RDK
Wed Oct 01, 2014 5:00 pm
Forum: Python
Topic: What are the issues or using Python on Windows 7
Replies: 6
Views: 1162

What are the issues or using Python on Windows 7

Folks....Are there any issues around using Python on Windows 7 to create code and then moving the .py files to the Pi? Are there "things" that will work on the Windows 7 box but will not on the Pi. And vice-versa? Of course, I realize that programming to use Pi functions (pins, etc) will not work on...
by RDK
Thu Sep 18, 2014 8:52 am
Forum: Beginners
Topic: Mounting USBStick for R/W for all users
Replies: 5
Views: 1046

Re: Mounting USBStick for R/W for all users

rpdom....WOW and thanks. Your code works like a champ. Thanks again....RDK
by RDK
Thu Sep 18, 2014 7:23 am
Forum: Beginners
Topic: Mounting USBStick for R/W for all users
Replies: 5
Views: 1046

Re: Mounting USBStick for R/W for all users

lmarmisa....Thanks for the reply. I read the references and I changed the fstab line for the USBStick as follows

Code: Select all

/dev/sda1 /mnt/usbdrive vfat defaults,dmask=027,fmask=137 0 0
Rebooted and I get the same results as before, only the root can copy files to the USBStick.

Thanks again....RDK
by RDK
Thu Sep 18, 2014 5:12 am
Forum: Beginners
Topic: Issues Installing Tomcat
Replies: 1
Views: 630

Issues Installing Tomcat

Folks.....Tried installing Tomcat7 yesterday - very frustrating experience after several other installs that were quick and easy! Running Raspbian OS. sudo apt-get update sudo apt-get install tomcat7 After installing, it tried to start Tomcat7 and failed as JAVA_HOME was not defined. Java is install...
by RDK
Thu Sep 18, 2014 4:55 am
Forum: Beginners
Topic: Mounting USBStick for R/W for all users
Replies: 5
Views: 1046

Re: Mounting USBStick for R/W for all users

Hmmm, could this be because the USBStick is FAT and you can't set permissions on FAT?....RDK

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