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by bobstro
Mon Nov 23, 2015 4:57 pm
Forum: Automation, sensing and robotics
Topic: Old-school serial port
Replies: 21
Views: 2562

Re: Old-school serial port

Have you verified the serial settings the elevator is expecting, particularly hardware or software flow control and confirmed that they're set the same on the RPi and PC?
by bobstro
Sat Oct 24, 2015 5:39 am
Forum: Troubleshooting
Topic: OpenVPN with PIA Speed Issues
Replies: 25
Views: 7473

Re: OpenVPN with PIA Speed Issues

[...] I mean 2-3MB/s download is decent. Are other people with faster internet seeing faster speeds over VPN than that? On a virtualized Linux box running OpenVPN to a PIA German server, I get about 45 Mbps on my 60 Mbps Internet connection. Yes, much faster. The RPi is simply not going to compete ...
by bobstro
Fri Oct 23, 2015 4:58 am
Forum: Troubleshooting
Topic: OpenVPN with PIA Speed Issues
Replies: 25
Views: 7473

Re: OpenVPN with PIA Speed Issues

I suspect if you monitor CPU utilization (e.g. using top, htop), you'll see one of your core utilization running near max. That will likely be associated with the OpenVPN process. The RPi simply doesn't have the horsepower your desktop has, and keeping up with encryption is causing your slowdown.
by bobstro
Wed Oct 21, 2015 6:14 pm
Forum: Off topic discussion
Topic: What is this old thing?
Replies: 29
Views: 4335

Re: What is this old thing?

I wouldn't bother with trying to get it to function. Most of those old word processors were very simplistic. If you can get someone to safely gut the case, you could build a RPi into it.
by bobstro
Wed Oct 21, 2015 6:04 pm
Forum: General discussion
Topic: Passwords in configuration files
Replies: 14
Views: 2706

Re: Passwords in configuration files

[...] [*]Store the password in an option file, that will live in /root - so it is effectively the "Linux way" I first mentioned, but not available to ps You seem to be moving the goalpost on what the "Linux way" is. You've now got the option to put it in the root user's directory with permissions r...
by bobstro
Wed Oct 14, 2015 2:22 am
Forum: General discussion
Topic: Passwords in configuration files
Replies: 14
Views: 2706

Re: Passwords in configuration files

The mysql documentation discusses the issue at length and details other options that can be used. It's always worth researching what any online article is telling you to do, much less accept a site called "Dude My Dad's a Geek" as authoritative.
by bobstro
Tue Oct 13, 2015 9:46 pm
Forum: Off topic discussion
Topic: Are you a Geek or a Nerd?
Replies: 13
Views: 2123

Re: Are you a Geek or a Nerd?

I had this discussion with my boys a few years back when they were in high school. They were very much of the opinion that a "geek" was something you wanted to be (techie), while a "nerd" was not (social outsider). I have been called a "computer nerd" since the 1980's though, and "pencil neck geek" ...
by bobstro
Tue Oct 13, 2015 3:33 am
Forum: Off topic discussion
Topic: Pi in the News...but not really the way you'd want it
Replies: 1
Views: 544

Re: Pi in the News...but not really the way you'd want it

Hmm. While technically correct, the article is more than a little bit sensational. If you're using unlicensed spectrum, interference is a given, and along with that, the possibility of disruption. I wouldn't call that earth shattering news. And there are plenty of ways to disrupt 2.4 GHz without a c...
by bobstro
Thu Oct 01, 2015 12:29 pm
Forum: Troubleshooting
Topic: wlan repeater ip-address difficulties
Replies: 2
Views: 980

Re: wlan repeater ip-address difficulties

A bit of clarification: Are you trying to configure your RPi as a Layer 2 repeater simply repeating traffic received on one adapter out the other and vice-versa, or a Layer 3 router handing out IP addresses on one subnet and routing that traffic out to another subnet? Dave Conroy has an excellent ar...
by bobstro
Tue Sep 29, 2015 2:14 am
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

Can you at least stick a display on the A+ to verify it's booting that card?
by bobstro
Mon Sep 28, 2015 3:11 pm
Forum: Français
Topic: High quality camera
Replies: 6
Views: 2615

Re: High quality camera

dougui wrote:[...] J'ai décidé de mettre un message bilingue.
Google translate is working surprisingly well!

I have not done much with it recently, but a couple of years ago, I had some success using a Logitech C920 webcam on my RPi. The pictures were overall of better quality.
by bobstro
Mon Sep 28, 2015 7:09 am
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

[...] If I bought a new router and didn't even connect it to the Internet at all, would it still work to connect my laptops together with the Raspberry Pies? Absolutely. The router doesn't "care" whether you're connecting to the Internet or not. A cheap router will more than suffice, and you're lik...
by bobstro
Mon Sep 28, 2015 3:16 am
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

What OS is running on your laptop? Perhaps you could configure it as the access point?
by bobstro
Mon Sep 28, 2015 12:18 am
Forum: Français
Topic: High quality camera
Replies: 6
Views: 2615

Re: High quality camera

[...] I saw I can use adapters to put a lens on the picam. I think it can be the simpler way. Will the quality be good ? What are the limitations? I purchased one of those cheap smartphone lens sets for about $15. It comes with a magnetic stick-on ring you put around the camera aperture, then selec...
by bobstro
Mon Sep 28, 2015 12:10 am
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

Obviously, I can't say for sure, but I think you've narrowed it down to a basic incompatibility between the Edimax adapter and your current D-Link router settings . Focus on that for now. Can you try setting the D-Link to some basic wireless compatibility settings? Drop any performance or enhancemen...
by bobstro
Sun Sep 27, 2015 8:54 pm
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

I agree that's the best next step. Is one of your other computers Linux, or can you boot a linux distribution just to see if you can get it to work? Until that works, I would save the frustration of trying to get your RPi configuration going.
by bobstro
Sun Sep 27, 2015 8:11 pm
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

Sorry for all the problems you have. I feel your pain regarding having to start fresh, but it's really the only way to know what your setup is like without you having to dump a long history. Just keep a journal of what you do. After all, you want to be able to reproduce your results next time! I'm j...
by bobstro
Sun Sep 27, 2015 5:48 pm
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

Do you have a desktop computer you could connect the Edimax adapter to for testing, just to see if it will connect to the D-Link router? A complete incompatibility would be rare, especially if you're connecting with other devices. Let's see how far you got on getting basic wireless going: *Is the Ed...
by bobstro
Sat Sep 26, 2015 8:29 pm
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

Ah, that adds a wrinkle. As others have noted, ifplugd likes to disconnect your wifi interface if the wired interface is connected. A simple possibility is to configure it as I've described, then reboot and unplug the wired interface as it boots. With any luck, it will come up and connect to your wi...
by bobstro
Sat Sep 26, 2015 6:25 pm
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

[...] Having said that it was nice having WPA_GUI in the past. There were times in the past when I could access the PI whilst the WiFi dongle was plugged in. But still no WiFi connection. I've been trying many different things over the past few months. I recently lost the ability to have the WiFi d...
by bobstro
Sat Sep 26, 2015 6:16 am
Forum: Troubleshooting
Topic: Totally frustrated trying to set up Headless WiFi
Replies: 75
Views: 12369

Re: Totally frustrated trying to set up Headless WiFi

Do you require the use of a GUI to do the configuration work? I use the same Edimax USB wifi adapter on a RPi A+ to monitor and control multiple B and 2B RPis in the field. I found it easiest to start from scratch with a fresh raspbian image after a lot of experimentation that caused mysterious prob...
by bobstro
Thu Sep 24, 2015 9:41 pm
Forum: Networking and servers
Topic: RPi as NTP server
Replies: 3
Views: 3409

Re: RPi as NTP server

I never got broadcast working, so really can't say what the issues there might be. Unicast is working well though. Do keep in mind it can take some time (10s of seconds) for timesources to synchronize, so give it a few minutes. Also, it may change throughout the day if you're using multiple servers....
by bobstro
Thu Sep 24, 2015 7:15 pm
Forum: Off topic discussion
Topic: Voting system for the forum
Replies: 42
Views: 5321

Re: Voting system for the forum

Joe Schmoe wrote:[...] And note that the OP has not seen fit to return to this thread; that's usually a pretty good indicator of the irrelevance of the responses.
So you're saying you'd down-vote them?
by bobstro
Thu Sep 24, 2015 3:42 pm
Forum: General discussion
Topic: Ping slow wifi adapter[Reopened]
Replies: 4
Views: 1509

Re: Ping slow wifi adapter

A lot will not surprisingly depend on the quality of your wifi connection. What are you seeing with iwconfig in the Link Quality , Signal level and Noise level readings? sudo iwconfig [sudo] password for bob: wlan0 IEEE 802.11bg ESSID:"Mother" Nickname:"<WIFI@REALTEK>" Mode:Managed Frequency:2.447 G...
by bobstro
Thu Sep 24, 2015 3:01 pm
Forum: Networking and servers
Topic: RPi as NTP server
Replies: 3
Views: 3409

Re: RPi as NTP server

I am not an ntp expert by any means, but I've played with ntp in other environments. Does sudo ntpq -p show that ntp is synchronizing properly on the server? You should see at least one with "*" in the status column at left indicating the selected server and (hopefully) some with "+" indicating sele...

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