Search found 47 matches
- Mon Aug 13, 2012 10:02 pm
- Forum: For sale
- Topic: Relay card for GPIO
- Replies: 12
- Views: 13786
Re: Relay card for GPIO
I've seen a couple of projects that get round the electrical safety issue by using remote control mains power sockets. These can be bought cheaply from pretty much anywhere and are usually already CE approved, etc. The Pi GPIOs can then be interfaced with the remote control which can control the rel...
- Thu Aug 02, 2012 12:45 pm
- Forum: HATs and other add-ons
- Topic: PWM code
- Replies: 13
- Views: 6500
Re: PWM code
Hi Gert, Thanks for your reply. I thought PWM had constant frequency by definition. Maybe there are some variants? I'm not sure I understand why this would be impossible to generate, but thanks for the info. The problem that I have is that with a changing frequency, the switching losses in my transi...
- Thu Aug 02, 2012 7:28 am
- Forum: HATs and other add-ons
- Topic: PWM code
- Replies: 13
- Views: 6500
Re: PWM code
Hi Gert,
So in your code it seems that the PWM frequency will change depending on the duty cycle.
Is it possible to keep the PWM frequency the same, regardless of duty cycle?
This would be a preferred implementation for many people.
Felix
So in your code it seems that the PWM frequency will change depending on the duty cycle.
Is it possible to keep the PWM frequency the same, regardless of duty cycle?
This would be a preferred implementation for many people.
Felix
- Tue Jul 31, 2012 5:37 am
- Forum: Automation, sensing and robotics
- Topic: 240 v mains controller
- Replies: 28
- Views: 12241
Re: 240 v mains controller
Have a look a the Piface. http://pi.cs.man.ac.uk/ This has two relays on it that can switch mains voltage (up to 10A, as long as you are careful!). It also has 8 digital I/Os that could be used for other applications. It piggybacks on top of the Pi and costs 30 gbp. There is already some good simple...
- Fri Jul 27, 2012 12:10 am
- Forum: General discussion
- Topic: PiFace
- Replies: 3
- Views: 1511
Re: PiFace
Hi Gordon,
I too have a PiFace, and haven't had a chance to play around with it much yet.
This code looks like a good starting point. What kernel/distro are you using?
Thanks,
Felix
I too have a PiFace, and haven't had a chance to play around with it much yet.
This code looks like a good starting point. What kernel/distro are you using?
Thanks,
Felix
- Thu Jul 12, 2012 11:18 am
- Forum: Debian
- Topic: 3.5 GB rootfs is full?
- Replies: 15
- Views: 5840
Re: 3.5 GB rootfs is full?
what is the output from :-
df -h ?
you could clear some space easily using
sudo apt-get clean
df -h ?
you could clear some space easily using
sudo apt-get clean
- Tue Jul 10, 2012 1:30 am
- Forum: Networking and servers
- Topic: Ampache (not Apache)
- Replies: 4
- Views: 6674
Re: Ampache (not Apache)
I use mpd with client175.
I also tried mpd with groovebasin for a while and that worked well too.
Ampache looks entirely possible since you basically just need a LAMP server configuration.
I also tried mpd with groovebasin for a while and that worked well too.
Ampache looks entirely possible since you basically just need a LAMP server configuration.
- Wed Jul 04, 2012 1:56 am
- Forum: Off topic discussion
- Topic: Rant: Netbooks were better three years ago
- Replies: 32
- Views: 10606
Re: Rant: Netbooks were better three years ago
The spec of what you want is virtually the same as the spec of your current Asus Eee PC 900. Why not just keep using this, since it has the spec that you want? You can get extended life batteries for these computers very cheaply from Ebay, so you could have your 8 hours battery life at minimal cost ...
- Mon Jul 02, 2012 11:00 pm
- Forum: Troubleshooting
- Topic: Trying to get an RTL8188CUS wireless USB NIC working.
- Replies: 57
- Views: 81804
Re: Trying to get an RTL8188CUS wireless USB NIC working.
Here is an update to the 8192cu.ko module for Arch 3.1.9-26 kernel. https://www.dropbox.com/s/7nyqd06dhs3j2bk/3.1.9-26-ARCH-8192cu.tar.gz To install, firstly create file /etc/modprobe.d/modprobe.conf and add the line blacklist.rtl8192cu Next wget http://dl.dropbox.com/s/7nyqd06dhs3j2bk/3.1.9-26-ARCH...
- Mon Jul 02, 2012 10:11 pm
- Forum: Media centres
- Topic: Stream audio from command line
- Replies: 8
- Views: 12556
Re: Stream audio from command line
mpd can do this. it's quite easy to set up
- Mon Jul 02, 2012 6:04 am
- Forum: Arch
- Topic: Noice on analouge audio with mpd
- Replies: 17
- Views: 5362
Re: Noice on analouge audio with mpd
Dom, can you point me towards the fix that you are talking about? Is it in the main Arch repositories?dom wrote:@moobsen
There was another analogue audio fix a few days ago. Any better?
If there is still a problem, explain how I can reproduce it.
Thanks.
- Mon Jul 02, 2012 5:57 am
- Forum: Arch
- Topic: sound, maybe I'm an idiot
- Replies: 17
- Views: 7309
Re: sound, maybe I'm an idiot
The noise is still present on Arch (fully updated from the repositories).
- Sun Jul 01, 2012 10:53 pm
- Forum: Arch
- Topic: sound, maybe I'm an idiot
- Replies: 17
- Views: 7309
Re: sound, maybe I'm an idiot
The current bcm sound module exhibits a burst of white noise at the beginning of playback, but only on analogue (3.5mm jack) output, not HDMI.
This is present in all distributions and there is, at present, no work around that I know of, apart form using an external usb sound card.
This is present in all distributions and there is, at present, no work around that I know of, apart form using an external usb sound card.
- Sun Jul 01, 2012 12:40 pm
- Forum: Arch
- Topic: Noice on analouge audio with mpd
- Replies: 17
- Views: 5362
Re: Noice on analouge audio with mpd
I have had some success with a Creative Labs Soundblaster Live! 24-bit, USB sound card (Model Number SB0490). It works without any additional kernel modules in Arch and has both coaxial and optical SPDIF. The sound quality is much better than the analogue sound on the Pi. However, the support in Lin...
- Sun Jul 01, 2012 12:28 pm
- Forum: Media centres
- Topic: mpd Web-Radio
- Replies: 23
- Views: 102991
Re: mpd Web-Radio
@paat. I managed to stream music from mpd to a remote client (is this what you mean?), but it is not 100% reliable. I compiled the git version 0.17 from source and that worked slightly better, for me but I think the Pi may be struggling to re-compress audio stream on the fly.
- Tue Jun 26, 2012 2:43 am
- Forum: Graphics, sound and multimedia
- Topic: USB Audio
- Replies: 18
- Views: 17501
Re: USB Audio
FYI, I also noticed SD card causing noise on the integrated audio. One SD card that I have seems to cause noticeable glitches in the sound, whereas the other does not.
Interestingly, the one that has the problems is a 32Gb Class 10, whereas the one without any audio glitches is a 2Gb Class 4.
Interestingly, the one that has the problems is a 32Gb Class 10, whereas the one without any audio glitches is a 2Gb Class 4.
- Sun Jun 24, 2012 10:40 pm
- Forum: Arch
- Topic: full guide to first Arch update
- Replies: 12
- Views: 10503
Re: full guide to first Arch update
Hi Lesto, It fails for me on glibc update. Many of the other packages are dependent on glibc. The work around that I found was to hold back glibc until I had installed all the other, non-dependent packages and then disable bcm sound module, increase ram to 224Mb and add a swap partition. I'm not sur...
- Sun Jun 24, 2012 2:32 am
- Forum: Arch
- Topic: full guide to first Arch update
- Replies: 12
- Views: 10503
Re: full guide to first Arch update
Unfortunately this guide did not work for me. Just a note to say that there is a newer build of Arch available for download, but not on the main downloads page here: http://downloads.raspberrypi.org/downlo ... 6-2012.zip
- Thu Jun 21, 2012 11:20 pm
- Forum: Media centres
- Topic: My project : the raspberry radio
- Replies: 22
- Views: 19073
Re: My project : the raspberry radio
Shutting down could be problematic if a disk write is in progress when the shutdown occurs. There are a few options in this regard. 1) Leave it switched on all the time. It only consumes around 3 Watts, so not too much of a power drain 2) Shut down remotely using ssh command 3) Once set up, mount al...
- Thu Jun 21, 2012 5:55 am
- Forum: Media centres
- Topic: My project : the raspberry radio
- Replies: 22
- Views: 19073
Re: My project : the raspberry radio
I have set up something similar to what you describe, but without any display or buttons. I use mpd running on Debian to stream BBC radio channels here in new zealand, and also use it as an mp3 jukebox. The pi is simply connected up via the 3.5mm jack to my amplifier for the audio. Also, I use a web...
- Thu Jun 21, 2012 5:45 am
- Forum: Media centres
- Topic: mpd Web-Radio
- Replies: 23
- Views: 102991
Re: mpd Web-Radio
Yes, I have mpd up and running on the pi and have successfully used it to stream web radio. Setting up the backend daemon is reasonably easy and you can then choose a number of different front ends. I use client175 which is a web browser interface so the pi does not need to be physically connected t...
- Tue Jun 19, 2012 4:37 am
- Forum: Arch
- Topic: Noice on analouge audio with mpd
- Replies: 17
- Views: 5362
Re: Noice on analouge audio with mpd
Same issue here. white noise at the beginning of playback when using analogue output. The issue is not confined to mpd. Also hear the same behaviour using speaker-test or aplay I suspect it is due to the alpha status of the bcm sound module. To make matters worse, I also now hear glitches during pla...
- Fri May 25, 2012 1:02 am
- Forum: Troubleshooting
- Topic: Compiling Kernal Module
- Replies: 7
- Views: 2232
Re: Compiling Kernal Module
what .config file did you use?
- Thu May 24, 2012 1:47 am
- Forum: Troubleshooting
- Topic: New PSU... but "repeated keypresses" problem persists
- Replies: 8
- Views: 4084
Re: New PSU... but "repeated keypresses" problem persists
Same issue here. Repeated keypresses. Running Arch, with Acer wireless keyboard/mouse. No hub. 

- Thu May 17, 2012 1:58 am
- Forum: Troubleshooting
- Topic: Having lots of problems...
- Replies: 12
- Views: 3678
Re: Having lots of problems...
Try booting it with the bare minimum of usb perhiperals plugged in. i.e. just a keyboard and no hub or anything like that.