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by MarkHaysHarris777
Tue Apr 21, 2015 9:55 pm
Forum: Other projects
Topic: Trac on a Pi
Replies: 10
Views: 957

Re: Trac on a Pi

Are you referring to this:

http://trac.edgewall.org/
by MarkHaysHarris777
Tue Apr 21, 2015 9:48 pm
Forum: Python
Topic: Script fails after some hours
Replies: 8
Views: 1496

Re: Script fails after some hours

get htop like this: sudo apt-get install htop htop my be configured to show threads in a different color... also, you can view threads in a 'tree' with f5 toggle, or you can configure the 'tree' option on all the time. Just for your awareness, push-buttons are a terrible way to trigger an interrupt;...
by MarkHaysHarris777
Tue Apr 21, 2015 9:35 pm
Forum: Beginners
Topic: Can I damage my pi by "playing" with the GPIO
Replies: 7
Views: 1003

Re: Can I damage my pi by "playing" with the GPIO

Why are you 'playing' with your GPIO? The foundation downplays the significance for education's sake and to encourage young people... but common, really? Your Raspberry PI is not a toy; it is a sophisticated piece of electrical engineering as well software engineering. If you 'play' with it you're g...
by MarkHaysHarris777
Tue Apr 21, 2015 4:01 pm
Forum: Python
Topic: Script fails after some hours
Replies: 8
Views: 1496

Re: Script fails after some hours

How does it fail? In other words, what does 'fail' mean? Does the RPi reset? Does the code just stop running? Do you get an error message? Does the callback become unresponsive? Does the callback stop working? If you use htop to view the processes while running correctly you will probably notice tha...
by MarkHaysHarris777
Tue Apr 21, 2015 3:17 pm
Forum: Camera board
Topic: Global Shutter options?
Replies: 1
Views: 2684

Re: Global Shutter options?

For the Raspberry PI ?

I would be very surprised if someone has one out... here are the specs, and a good article about the complexities of a global shutter:

https://www.raspberrypi.org/documentati ... /camera.md

http://electroiq.com/blog/2014/09/globa ... e-sensors/
by MarkHaysHarris777
Tue Apr 21, 2015 3:08 pm
Forum: Italiano
Topic: consumo cpu
Replies: 6
Views: 1074

Re: consumo cpu

Yes, it is normal. Even a low priority job will use 100% of the CPU if nothing else is running or needs resources. You could use htop to set a lower priority 'nice' value to this job and then start a foreground process (like an interactive session in libreOffice for instance) and watch what happens ...
by MarkHaysHarris777
Tue Apr 21, 2015 2:59 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: RPi2 usb serial console has corrupted text
Replies: 6
Views: 1436

Re: RPi2 usb serial console has corrupted text

I have confirmed that the OTG usb port of the RPi(2B) and the RPi(B+) have the same interoperability issue with a usb 2.0 four port hub and two(2) downstream usb serial terminals (in my case Intel Edison SoC). If both terminals are open at the same time (one each to an Edison SoC) in 'screen' occasi...
by MarkHaysHarris777
Sun Apr 19, 2015 6:41 am
Forum: General discussion
Topic: Video player saturation
Replies: 9
Views: 1798

Re: Video player saturation

ghans wrote:Which players would that be ? AFAIK all players
except omxplayer still struggle with full HD h.264 material.
https://www.google.com/?gws_rd=ssl#q=vl ... layer+h264
by MarkHaysHarris777
Sun Apr 19, 2015 6:31 am
Forum: General discussion
Topic: Video player saturation
Replies: 9
Views: 1798

Re: Video player saturation

On my Samsung system I can set the video as 'movie,' or 'standard,' or 'sports'... you might try to affect the video quality by adjusting your monitor.
by MarkHaysHarris777
Sun Apr 19, 2015 5:53 am
Forum: Troubleshooting
Topic: Can't SSH into my Pi
Replies: 4
Views: 555

Re: Can't SSH into my Pi

Can you ping the RPi ?

If your RPi does not respond to a ping you will not be able to ssh to it either.

use:
ping 192.168.x.x <whatever your address is>

try
ssh pi@192.168.x.x <whatever your address is>
by MarkHaysHarris777
Sun Apr 19, 2015 5:47 am
Forum: General discussion
Topic: [HELP] One power supply for everything
Replies: 14
Views: 3286

Re: [HELP] One power supply for everything

Sure there is another way... design and build your own switching power supply (there are surface mounted ics that will do the job (take a look at any Arduino board). My supply setup is an extension cord plugged into a UPS... three warts hung off of that (2) at 5v and (1) at 9v. My RPi is powered fro...
by MarkHaysHarris777
Sun Apr 19, 2015 5:40 am
Forum: General discussion
Topic: Video player saturation
Replies: 9
Views: 1798

Re: Video player saturation

@MarkHaysHarris777: Your advice is rather useless, because there is only one usable video player for the Raspberry Pi (omxplayer). So, um, I should just unload the video players I have loaded and built from sources... I see... since, well, they must be useless/ Too bad you only have one useful vide...
by MarkHaysHarris777
Sun Apr 19, 2015 5:19 am
Forum: HATs and other add-ons
Topic: PowerBoost 500c Safe Shutdown
Replies: 12
Views: 12356

Re: PowerBoost 500c Safe Shutdown

I see... clever... you might try a timer (555) that would produce a one-shot (high for 20-40 seconds) then LOW / Automating power-down is typically not done. Automating recycle, yes, or restart after power glitch... UPS and so forth, but for all practical purposes you can leave the RPi on forever. I...
by MarkHaysHarris777
Sun Apr 19, 2015 5:06 am
Forum: General programming discussion
Topic: Wordpress Registration
Replies: 2
Views: 949

Re: Wordpress Registration

I'm sorry, your question is not clear; would you please restate your question? What is it that you would like to do with your Raspberry PI?
by MarkHaysHarris777
Sun Apr 19, 2015 4:54 am
Forum: Troubleshooting
Topic: Compiling Stargus and Stratagus!
Replies: 3
Views: 834

Re: Compiling Stargus and Stratagus!

It looks like your development system is missing the gtk development files; specifically gtk.h

Try to obtain the gtk dev stuff
by MarkHaysHarris777
Sun Apr 19, 2015 4:51 am
Forum: HATs and other add-ons
Topic: PowerBoost 500c Safe Shutdown
Replies: 12
Views: 12356

Re: PowerBoost 500c Safe Shutdown

I doubt it seriously. The RPi draws too much current. You need a switch or sensor to signal the RPi to (shutdown -h now) and then kill the mains (the powerboost) when the RPi is safely down. I would not mess around with any goofy flaky power cap to try to hold the RPi when the mains are down hoping ...
by MarkHaysHarris777
Sun Apr 19, 2015 4:45 am
Forum: General discussion
Topic: Video player saturation
Replies: 9
Views: 1798

Re: Video player saturation

The H264 codec is supported out of box. There are many players you might try... experiment. Many folks are probably satisfied with the saturation level you're complaining about. You need to remember, this is a Raspberry PI, not a state-of-the-art media center. It is a $39 micro controller running gn...
by MarkHaysHarris777
Sun Apr 19, 2015 4:41 am
Forum: Troubleshooting
Topic: Can't SSH w/ weaved
Replies: 2
Views: 967

Re: Can't SSH w/ weaved

You will want to post a question on the Weaved site.

No doubt you have a configuration error; a Weaved specialist or Weaved hobbyist will be able to assist you better than the RPi community in general.

Can you ssh to your RPi from your PC or local network?
by MarkHaysHarris777
Sun Apr 19, 2015 4:27 am
Forum: General discussion
Topic: [HELP] One power supply for everything
Replies: 14
Views: 3286

Re: [HELP] One power supply for everything

You must determine the maximum current draw for each of the devices you plan to use. I would dedicate a 2300 mA mains supply (wall wart) for the RPi. Be careful of the 7805 regulator... even with a heat sink they are really only able to supply 1000 mA although they can be pushed to 1.5 amp for short...
by MarkHaysHarris777
Sun Apr 19, 2015 4:16 am
Forum: Beginners
Topic: run a command on start up
Replies: 21
Views: 128696

Re: run a command on start up

... Isn't there a purpose built way to do this? I feel like sticking it in a file is a little ad-hoc Not at all. You can also start things automatically by time of day by placing your scripts in crontab files. There is a file on your RPi called /etc/crontab which holds entries that will run at vari...
by MarkHaysHarris777
Sun Apr 19, 2015 1:30 am
Forum: Beginners
Topic: run a command on start up
Replies: 21
Views: 128696

Re: run a command on start up

Casey Scalf wrote:I tried this but was unable to save the file because it said it could not be overwritten. How do I force this change?
cd /etc
sudo vi rc.local
by MarkHaysHarris777
Sun Apr 19, 2015 1:22 am
Forum: Beginners
Topic: Cant make LED working with RPi.GPIO with python
Replies: 9
Views: 1132

Re: Cant make LED working with RPi.GPIO with python

Your code shows you using pin 26, not pin 25...

:oops:
by MarkHaysHarris777
Sun Apr 19, 2015 1:12 am
Forum: Troubleshooting
Topic: CPU getting very hot after being unable to boot.
Replies: 6
Views: 1090

Re: CPU getting very hot after being unable to boot.

Take your raspberry pi out behind your house... open one of the metal cans ('ey, they might be plastic) and hold the raspberry pi over it for about three seconds; say, "via con dios," and then let go.

be sure to close the lid on the can before you go back into your house

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