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by PeterO
Sun Aug 26, 2012 9:43 am
Forum: User groups and events
Topic: Second Milton Keynes Jam.
Replies: 25
Views: 3883

Re: Second Milton Keynes Jam.

Sway_1233 wrote: What does anyone else think?
Good ideas ! When I've got the (currently being worked on) "Milton Keynes Raspberry Jam" Forum sorted out we can use that to discuss meeting formats and find out who is bringing something to show etc .

PeterO
by PeterO
Sun Aug 26, 2012 8:24 am
Forum: Advanced users
Topic: Netowrk not functioning while GUI is showing.
Replies: 9
Views: 2069

Re: Netowrk not functioning while GUI is showing.

Maybe an interaction in the USB drivers between the network and the mouse. I used to see it on older kernels but seems to be fixed now.
PeterO
by PeterO
Sun Aug 26, 2012 6:29 am
Forum: Beginners
Topic: How to Create Raspberry Pi SD Card in 5 Minutes!!!
Replies: 8
Views: 2502

Re: How to Create Raspberry Pi SD Card in 5 Minutes!!!

It may be worth noting that if the card has already been programmed one or more times, then there will be two partitions that need unmounting (e.g. /dev/sdb2 and /dev/sdb2).
PeterO
by PeterO
Sat Aug 25, 2012 6:57 pm
Forum: Graphics, sound and multimedia
Topic: writing directly to Pi's audio output?
Replies: 10
Views: 9800

Re: writing directly to Pi's audio output?

There is some example code on the ALSA site at
http://www.alsa-project.org/alsa-doc/al ... ample.html

As you've found ALSA is not as simple as the old oss sound libraries, but it is not to hard to trim down that example to just the bits you need.

PeterO
by PeterO
Sat Aug 25, 2012 6:51 am
Forum: Staffroom, classroom and projects
Topic: Educational resources for Raspberry Pi and Educational dist.
Replies: 20
Views: 4886

Re: Educational resources for Raspberry Pi and Educational d

" runs ahavi daemon (Bonjour client) and is called raspberrypi.local"

How does that work when you've got more than one PRI on the network ?

PeterO
by PeterO
Fri Aug 24, 2012 11:19 pm
Forum: Automation, sensing and robotics
Topic: Anyone sucessful in getting I2C /dev entries to show up?
Replies: 13
Views: 22555

Re: Anyone sucessful in getting I2C /dev entries to show up?

[ I also noticed that after you install i2c-tools with apt-get sudo apt-get update sudo apt-get install i2c-tools the group i2c is made. After which you can upgrade a user's premissions [ edit:incomplete sentence ] to gain access to the i2c devices. sudo usermod -aG i2c yourusername Thanks for that...
by PeterO
Fri Aug 24, 2012 9:05 pm
Forum: Automation, sensing and robotics
Topic: Anyone sucessful in getting I2C /dev entries to show up?
Replies: 13
Views: 22555

Re: Anyone sucessful in getting I2C /dev entries to show up?

It seems the information about needing a custom kernel is out of date. My PI is running 3.2.27+ #60 , and after removing the entry in /etc/modprobe.d/raspi-blacklist.conf and running "sudo modprobe i2c-dev" the devices appeared and are working. I used the code at http://www.robot-electronics.co.uk/f...
by PeterO
Fri Aug 24, 2012 4:59 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

Just out of interest, is anyone having the same problem as me at the moment? At random moments throughout the day I seem to be going online and buying pi related stuff :? I'll put my hand up ! This evening I ordered a "pibow" and some GPIO bits and bobs. PeterO The GPIO bits arrived from skpang tod...
by PeterO
Fri Aug 24, 2012 4:57 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

MattPoat wrote: See above post ;)
Which one ? The one that starts "The project will of course be demonstrated, all I need is a hot air balloon, two dozen chinamen, a dinosaur egg and a vinyl record, preferably jazz...."

I think I stopped reading it at that point :-)

PeterO
by PeterO
Fri Aug 24, 2012 1:48 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

Is it wrong that a grown man was seen this evening dancing around like a lunatic by his neighbours because he had just sent a few characters through the ether from his Arduino to his Pi :? Clearly you are well on your way to becoming a geek :-) What is your "project" that is going to use this commu...
by PeterO
Thu Aug 23, 2012 2:43 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

See this comment from Liz about the Maplin bundle.
http://www.raspberrypi.org/phpBB3/viewt ... in#p156106
PeterO
by PeterO
Thu Aug 23, 2012 2:41 pm
Forum: User groups and events
Topic: Second Milton Keynes Jam.
Replies: 25
Views: 3883

Second Milton Keynes Jam.

I had hoped we could hold the next Jam on Sept 23rd, but this clashes with another event at the museum which now has more attendees than was originally expected. So the second Raspberry Jam at The National Museum of Computing will be on Sunday September the 30th. 10:00 to 12:30 as before, but we wil...
by PeterO
Thu Aug 23, 2012 2:26 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

I would give their reccomented hub a miss. I had the 7 port version of it for a while (before it ended up in the bin) I didn't work well, and despite having an external AC supply it took power from my Pi. It also tried to power the pi when the main supply was disconnected.

PeterO
by PeterO
Wed Aug 22, 2012 8:27 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

I've found the "right way" to access GPIO pins.

"Safe, controlled access to GPIO on the Raspberry Pi"
http://quick2wire.com/2012/05/safe-cont ... pberry-pi/

I'll write a "Step by step HowTo" if anyone needs one to give it a try.

PeterO
by PeterO
Wed Aug 22, 2012 8:24 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

rembrandt wrote: Just out of interest, is anyone having the same problem as me at the moment? At random moments throughout the day I seem to be going online and buying pi related stuff :?
I'll put my hand up ! This evening I ordered a "pibow" and some GPIO bits and bobs.
PeterO
by PeterO
Wed Aug 22, 2012 5:52 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

From the INSTALL file.... "You will also need to add Apache's user (www-data) to the sudoers : $ sudo visudo then add the following line at the end of file : www-data ALL=(ALL) NOPASSWD: ALL" Kinda opens up a huge security hole :-( I'm sure there is a better way of doing this than giving the web-ser...
by PeterO
Wed Aug 22, 2012 5:28 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

I'll give it a whirl, when rpi-update finishes :-)
PeterO
by PeterO
Wed Aug 22, 2012 3:19 pm
Forum: Advanced users
Topic: Trouble powering pi from batteries
Replies: 10
Views: 3416

Re: Trouble powering pi from batteries

Glad you fixed it...

Actually I'm tempted to try something similar. I've got several LiPo packs for models that could be used for mobile computing purposes.

PeterO
by PeterO
Wed Aug 22, 2012 10:49 am
Forum: User groups and events
Topic: User Group in Braintree Essex
Replies: 24
Views: 4010

Re: User Group in Braintree Essex

AntGriff wrote:Hi All
If anyone would like to make contact regarding Essex pi group then please email me
[email protected]
Regards
Griff
Is anything going to happen ?

PeterO
by PeterO
Wed Aug 22, 2012 9:35 am
Forum: General discussion
Topic: Maplin pre-order bundle
Replies: 36
Views: 6597

Re: Maplin pre-order bundle

I would be a bit wary of this bundle. Has anyone actually got one yet ? The USB hub they include does not work well with the PI, or at least it didn't a few weeks ago when I tried one. It also tried to power the PI down the USB lead so needs the "cut the red wire" mod doing to it. And despite being ...
by PeterO
Tue Aug 21, 2012 5:55 pm
Forum: User groups and events
Topic: Raspberry Jam for Milton Keynes
Replies: 92
Views: 19936

Re: Raspberry Jam for Milton Keynes

I really **MUST** get round to doing something with my arduino enternet shield. Should be fun to send some packets to the pi.

PeterO
by PeterO
Tue Aug 21, 2012 3:42 pm
Forum: Advanced users
Topic: Trouble powering pi from batteries
Replies: 10
Views: 3416

Re: Trouble powering pi from batteries

There is no additional regulation on the 5V supply on the RPI board. However there is a 1A ployfuse in the 5V line from the micro-usb socket. Try applying the power via the Test points TP1 and TP2 on the board (or via the 5V and GND pins on the GPIO). It might be that the switching regulator in the ...
by PeterO
Tue Aug 21, 2012 8:56 am
Forum: C/C++
Topic: C program to play a WAV file
Replies: 11
Views: 18747

Re: C program to play a WAV file

You may have found this already, but there is a set of examples in C on the ALSA web site...
http://www.alsa-project.org/alsa-doc/al ... mples.html

PeterO
by PeterO
Mon Aug 20, 2012 5:30 pm
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 271171

Re: USB - the Elephant in our Room

Thanks dom.
PeterO
by PeterO
Mon Aug 20, 2012 5:11 pm
Forum: Troubleshooting
Topic: USB - the Elephant in our Room
Replies: 802
Views: 271171

Re: USB - the Elephant in our Room

Can someone post a link to the latest set of recommended kernel command line options to use/test latest USB code please.

Ta, PeterO

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