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by Severian
Mon Mar 14, 2016 4:12 am
Forum: Troubleshooting
Topic: No HDMI audio on TV
Replies: 1
Views: 448

No HDMI audio on TV

Howdy. I have tried this with a Raspberry Pi A+, B, B+, 2B and zero. I plug the Raspberry Pi into an APEX 32 inch TV HDMI port. I run OMXplayer or some other player and tell the program to output audio to the HDMI port. No sound gets played, but the video does fine. If I use a Raspberry PI B and pla...
by Severian
Fri Feb 27, 2015 8:34 am
Forum: General discussion
Topic: gb nic?
Replies: 26
Views: 5404

Re: gb nic?

Howdy, I am hoping someone from Canonical will see this. The page at http://www.ubuntu.com/things says about the Raspberry Pi 2 that "along with gigabit networking". /quote] no it does not to quote bolded for emphasis From the $35 ARMv7 Odroid-C1, which offers 1 GB RAM along with gigabit networking...
by Severian
Fri Feb 27, 2015 8:31 am
Forum: General discussion
Topic: gb nic?
Replies: 26
Views: 5404

Re: gb nic?

Have you got any links which prove your claim ? I'm very curious :D . ghans I found the quote. It is an excerpt from an interview for Make magazine that someone gave me. I had not read the whole interview until just now. In context, I probably misunderstood. Eben said Well, you have a 100Mbit inter...
by Severian
Thu Feb 26, 2015 11:41 am
Forum: Automation, sensing and robotics
Topic: How to let an Android phone communicate with a RPi?
Replies: 3
Views: 1291

Re: How to let an Android phone communicate with a RPi?

The answer depend on what you can do with your phone. I'd run a web server, ssh server, or maybe an ftp server as a last resort on the Pi. You can use wifi on the phone to connect to the Pi and upload images. If you want a direct connection, use an OTH cable and a USB nic on the phone with a crossov...
by Severian
Thu Feb 26, 2015 11:35 am
Forum: General discussion
Topic: Battery Power???
Replies: 4
Views: 730

Re: Battery Power???

Howdy, Your link to the battery is bad, so I can't look at the specs. If that battery puts out a good 5V, Id guess the PI could run for a few hours. It it does not put out 5V, you need to up or down convert it and give the Pi a regulated 5V. Your time will vary. Using an effecient regulator will hel...
by Severian
Thu Feb 26, 2015 11:01 am
Forum: General discussion
Topic: Samba issues/alternative for Windows 7+
Replies: 13
Views: 3094

Re: Samba issues/alternative for Windows 7+

Howdy, I would make these changes. I setup server like the following(adding the path parameter). I don't allow Windows on my LAN, so I can't test for you at the moment. But, I have used this setup for Linux samba servers on systems for friends who do run Windows. guest ok = yes locking = no writeabl...
by Severian
Thu Feb 26, 2015 10:52 am
Forum: General discussion
Topic: gb nic?
Replies: 26
Views: 5404

Re: gb nic?

Howdy,
I am hoping someone from Canonical will see this. The page at http://www.ubuntu.com/things
says about the Raspberry Pi 2 that "along with gigabit networking". They ought to fix that. I wonder if some prototype RPI 2 had that feature, or whether they just saw it on a spec sheet.
by Severian
Thu Feb 26, 2015 10:38 am
Forum: General discussion
Topic: gb nic?
Replies: 26
Views: 5404

Re: gb nic?

It isn't possible at all. The BCM2836 doesn't actually *have* a NIC. The NIC is part of the LAN chip, and SoC. I don't believe this is correct. I watched an interview with Eben where he said the 2836 did have a gigabit ethernet on board. They decided to keep the old NIC setup on the RPI 2 for compa...
by Severian
Thu Feb 26, 2015 10:23 am
Forum: Beginners
Topic: Snappy Ubuntu Core
Replies: 6
Views: 3975

Re: Snappy Ubuntu Core

OK, I have at least one technical question for now. I understand why there is no GUI. Who needs a gui with a mouse on their thermostat or quad-copter, after all? But, I expect to be able to drive a display. That thermostat needs to show the temperature and accept user input to request environmental ...
by Severian
Thu Feb 26, 2015 10:18 am
Forum: Beginners
Topic: Snappy Ubuntu Core
Replies: 6
Views: 3975

Re: Snappy Ubuntu Core

I installed it tonight and I have lots of questions. I read the documentation on the Ubuntu site, which did not answer many of them. So, I'll start with a couple here. 1. Does anyone from the snappy core project followw the Raspberry Pi forum? 2. I don't see hardly anything on ubuntuforums about Sna...
by Severian
Mon Feb 23, 2015 9:48 am
Forum: Automation, sensing and robotics
Topic: reliable power relays
Replies: 7
Views: 1339

Re: reliable power relays

Howdy, I don't have a part number, but I can probably get one for you. I have built relays into a few projects and reliability is important to me, too. I used 12V relays designed to go into cars. I bought mine at a great electonics surplus store here in Dallas, Texas. Hopefully, you can find a local...
by Severian
Mon Feb 23, 2015 7:57 am
Forum: Beginners
Topic: Can I use Raspberry PI as USB display adapter?
Replies: 2
Views: 577

Re: Can I use Raspberry PI as USB display adapter?

Howdy, As said above. The Raspberry Pi will not help you with your problem. You should look for a USB DisplayLink adapter. They seem to work well under Windows(which I can't verify since I don't run it) I have one on order and should be testing it with both desktop and Raspberry Pi linux in a couple...
by Severian
Mon Feb 23, 2015 6:29 am
Forum: Other projects
Topic: Pi into Old Laptop
Replies: 11
Views: 21041

Re: Pi into Old Laptop

Howdy, I have been wanting to do something similar to this. The biggest thing I have not figured out is using these HDMI to LVDS boards. They all say to send them your exact LCD pannel model and then they will tell you if their board is compatible. Did you just get lucky, or did youfind a compatibil...
by Severian
Mon Feb 23, 2015 6:10 am
Forum: Beginners
Topic: Create a log with time
Replies: 9
Views: 1170

Re: Create a log with time

The fix is just what I showed you, even if I pointed to the wrong line
f.write(str(elapsed))

The write method expects a string to write and so you need to give it one. You have a float and so cast it to a string.
by Severian
Fri Feb 20, 2015 8:12 am
Forum: Beginners
Topic: Create a log with time
Replies: 9
Views: 1170

Re: Create a log with time

The error really told you exactly the problem. Print expects to print strings

print str(elapsed), datestring

So, cast that float to a string and print it, as above
by Severian
Thu Feb 19, 2015 9:04 am
Forum: Graphics, sound and multimedia
Topic: Kivy, KivyPie and PiTFT
Replies: 3
Views: 1372

Re: Kivy, KivyPie and PiTFT

I am working towards such a setup as you propose. I am using the same display, but I am developing my Kivy application on a desktop PC first and then I'll move it to the Pi. I experienced the same problem you describe on an Ubuntu 12.04 desktop. It turned out I was missing some of the dependancies a...
by Severian
Thu Feb 19, 2015 8:57 am
Forum: Graphics, sound and multimedia
Topic: Saving time-lapse photography onto a USB flash drive
Replies: 3
Views: 1668

Re: Saving time-lapse photography onto a USB flash drive

As for restricting the device to certain times and temperatures, that is also simple. Add a RTC(Real Time Clock) module and a temperature probe. I like the waterproof DS18b20 temperature probes. Write a short Python script that checks the yime and temperature and then calls the program to snap a pic...
by Severian
Thu Feb 19, 2015 8:53 am
Forum: Graphics, sound and multimedia
Topic: Saving time-lapse photography onto a USB flash drive
Replies: 3
Views: 1668

Re: Saving time-lapse photography onto a USB flash drive

Howdy, Wht you ask is not difficult. I'll tell you how I would do it and make a few comments. Your needs may be a little different from what I am picturing and that will affect what you would want for an optimal solution. I assume you won't have a monitor or keyboard hooked up in the field. I assume...
by Severian
Thu Feb 19, 2015 6:10 am
Forum: General discussion
Topic: How to boot pi from blu-ray disc?
Replies: 3
Views: 615

Re: How to boot pi from blu-ray disc?

The simplest answer is no. It always boots from the SD card. But, you can configure it to mount the root filesystem somewhere other than the SD card. I do it with hard drives. I don't know what all you would need to use BlueRay. Probably a custom kernel with support for BlueRay, at least. I'd expect...
by Severian
Thu Feb 19, 2015 4:03 am
Forum: Beginners
Topic: Create a log with time
Replies: 9
Views: 1170

Re: Create a log with time

Hello again, Because of the way my scripts run, I usually don't worry about closing file objects, but I should have added that for you. Instead of the code I just gave you, try: datestring = datetime.datetime.strftime(datetime.datetime.now(), '%Y-%m-%d %H:%M:%S') + "\n" with open('test.txt','a') as ...
by Severian
Thu Feb 19, 2015 3:57 am
Forum: Beginners
Topic: Create a log with time
Replies: 9
Views: 1170

Re: Create a log with time

There are several ways to do this. A first pass at this would be to add import datetime at the top of your file and datestring = datetime.datetime.strftime(datetime.datetime.now(), '%Y-%m-%d %H:%M:%S') + "\n" with open('/home/pi/test.txt','a') as f: f.write(datestring) where you wanted the log entry
by Severian
Thu Feb 19, 2015 3:11 am
Forum: Beginners
Topic: Create a log with time
Replies: 9
Views: 1170

Re: Create a log with time

Assuming your python script writes the time to stdout, just have a line like this /usr/bin/python /home/pi/eventime.py >> /home/pi/time.txt Put that command in crontab to run on whatever schedule you want or as an init entry in /etc/rc.local to make it run once every time you boot. The two > symbols...
by Severian
Thu Feb 19, 2015 2:53 am
Forum: Beginners
Topic: LCD screen Controller board
Replies: 2
Views: 1457

Re: LCD screen Controller board

There are controller boards under $30 on ebay. But, I haven't figured out which LCD pannels will work. I want to find a reasonably priced panel in the 12 to 15 inch size range. The controller sellers want you to give them the exact model of the panel and then they will tell you if the controller is ...
by Severian
Wed Jul 10, 2013 6:35 am
Forum: Other projects
Topic: Screenly OSE -- Digital Signage for the Raspberry Pi
Replies: 1104
Views: 382713

Re: Screenly OSE -- Digital Signage for the Raspberry Pi

Howdy, I installed Screenly last night and it looks quite interesting. I plan to show it to my local Unix Users Group. I'd like to have a large video file to demo with. After several attempt to upload the asset failed, I just used scp to copy the file to the machine. But, I have not figured out how ...

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