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by BerryPicker
Thu Oct 31, 2013 11:36 am
Forum: General discussion
Topic: Can/should the raspi control 100+ LEDs?
Replies: 12
Views: 4479

Re: Can/should the raspi control 100+ LEDs?

The data and timing lines of LED strips present an insignificant load to the Pi so you should be OK adding more.
www.youtube.com/watch?v=R-0Beb7i7Sk
by BerryPicker
Wed Oct 23, 2013 9:21 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SPI: problem with spi_async, waits in spin_unlock_irqrestore
Replies: 11
Views: 4411

Re: SPI: problem with spi_async, waits in spin_unlock_irqres

Thank you for your analysis and solution.
With your solution, how would the SPI subsystem cope with multiple spi_async calls from a variety of running proceses? Would all calls be accepted without needing to wait for the SPI subsystem to become free?
by BerryPicker
Fri Aug 30, 2013 4:28 pm
Forum: General discussion
Topic: Boblight possible?
Replies: 707
Views: 145929

Re: Color calibration: blue is not blue "rgb 0040FF"

Knapster wrote:So i thought setting the "rgb" value in boblight.conf section [color] for blue to 0040FF would compensate this disparity.
If you are using the Pi together with an Arduino to drive your LEDs, you could modify the Arduino fast SPI sketch (LEDstream.pde) to perform the colour mixing you require.
by BerryPicker
Thu Aug 22, 2013 1:06 pm
Forum: Arch
Topic: New rootfs image, June 2013
Replies: 5
Views: 3029

Re: New rootfs image, June 2013

Before that see if this brings up the network dhcpcd eth0 Alas, for me, this doesn't help. The result is: eth0: rebinding of URL eth0: soliciting a DHCP lease timed out forked to background A fresh Arch image will initially make a connection, but after a few reboots or shutdowns it fails to connect...
by BerryPicker
Wed Aug 21, 2013 3:39 pm
Forum: Arch
Topic: Rootfs new 15th June 2013
Replies: 5
Views: 1733

Re: Rootfs new 15th June 2013

For a clear step by step guide on how to resize the partitions on an SD card loaded with the new Arch image see:
http://jan.alphadev.net/post/5359424165 ... -partition
It worked for me, and I feel I learned something about what I was doing!
by BerryPicker
Sun Aug 18, 2013 9:16 am
Forum: Arch
Topic: Latest image boot messages continue write after login prompt
Replies: 3
Views: 1684

Latest image boot messages continue write after login prompt

For my first venture into Arch I have installed the latest image (archlinux-hf-2013-07-22.img.zip). When the pi boots up from the image it produces loads of messages and then a login prompt appears. But before my fingers can reach the keys, more messages appear and fill in the space where I would ex...
by BerryPicker
Sat Aug 17, 2013 1:36 pm
Forum: Troubleshooting
Topic: USB FIQ testing....
Replies: 181
Views: 72757

Re: USB FIQ testing....

jdb wrote:... perhaps try running without fiq_split_enable - set dwc_otg.fiq_split_enable=0 in cmdline.txt.
With this my Philips SPC900NC webcam (a USB1 device) works at [email protected] Without this it only works at 160x120.
by BerryPicker
Sat Aug 10, 2013 1:44 pm
Forum: General discussion
Topic: Boblight possible?
Replies: 707
Views: 145929

Re: Boblight possible?

As my Freeview HDD recorder has both a SCART (analogue) and HDMI outputs, I'm thinking I could use a USB video grabber connected to my Pi for running boblight. A basic tutorial on how to use boblight.v4l explaining the commands to use and any requirements for other files (configuration and options) ...
by BerryPicker
Wed May 29, 2013 4:23 pm
Forum: Beginners
Topic: Rpi can't handle a webcam = angry boss
Replies: 8
Views: 4844

Re: Rpi can't handle a webcam = angry boss

... where is "omxplayer" I never saw this. And how would I use it to view the webcam? Use a webcam which can output MJPEG and stream it using MJPG-streamer. There's a total, step-by-step instruction on how to view an mjpeg stream with omxplayer here. http://www.raspberrypi.org/phpBB3/viewtopic.php?...
by BerryPicker
Tue May 14, 2013 7:28 pm
Forum: Troubleshooting
Topic: RPi not booting after Update
Replies: 33
Views: 26936

Re: RPi not booting after Update

MrEngman wrote:... the next rpi-update will fail to boot.
It did! I delayed until today hoping it wouldn't. Thanks for describing your fix using a pc with microsoft windows.
by BerryPicker
Sat Apr 06, 2013 9:30 am
Forum: General discussion
Topic: Marmalade - Raspberry Pi OS Preview
Replies: 17
Views: 11297

Re: Marmalade - Raspberry Pi OS Preview

I like the colourful rendition. The effect of mouse movement across the pond is fascinating. For me it cries out for sound accompaniment. Hopefully you'll provide such, perhaps with some configurable options!
by BerryPicker
Fri Apr 05, 2013 5:01 pm
Forum: Troubleshooting
Topic: Strange onboard UART behavior (solved)
Replies: 11
Views: 2155

Re: Strange onboard UART behavior

Is this the same problem?
Only a workaround is offered; not a solution.
by BerryPicker
Wed Apr 03, 2013 11:13 am
Forum: Troubleshooting
Topic: omxplayer - Playing http stream fails
Replies: 3
Views: 15685

Re: omxplayer - Playing http stream fails

w1tht0uchp4d wrote:Are there any suggestions?
Does this post help? It worked for me.
Total, step-by-step to view mjpeg stream.
http://www.raspberrypi.org/phpBB3/viewt ... 44#p286944
by BerryPicker
Sun Mar 24, 2013 10:18 pm
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 203290

Re: USB redux

M33P wrote:A new kernel is available via rpi-update
@MP33 Thank you. With my Philips Webcam SPC 900NC at 320x240 or below there are now no .xsession-errors reported by guvcview, whereas before there were extensive

Code: Select all

Could not grab image (select timeout): Resource temporarily unavailable
by BerryPicker
Fri Mar 22, 2013 9:26 pm
Forum: Troubleshooting
Topic: USB performance: Isochronous (audio or video)
Replies: 21
Views: 15358

Re: USB performance: Isochronous (audio or video)

I would also like some reports on webcams that use the pwc driver. I have a Philips SPC900NC webcam. With guvcview it "works" in 320x240 or less showing a low frame rate but good pictures. Typing guvcview -v from a console, it reports VID/PID: 0471 0329, driver:pwc. The same information is recorded...
by BerryPicker
Thu Mar 21, 2013 10:01 am
Forum: Beginners
Topic: Software releases
Replies: 5
Views: 751

Re: Software releases

On my new 2013-02-09-wheezy-raspbian I noticed that PulseAudio was no longer included, whereas I don't remember apt-get removing PulseAudio from the earlier image. So, if a later release of Raspbian OS does not contain an element previously included, does (or should) the apt-get remove that element ...
by BerryPicker
Wed Mar 20, 2013 10:35 am
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 203290

Re: USB redux

gsh wrote: I don't have any webcam's do you know which ones work and which ones do not...
There's some potentially useful information here, the caveat being the undefined meaning of the term "work"! It's encouraging to see that this task has been assigned and resourced.
by BerryPicker
Tue Mar 19, 2013 5:38 pm
Forum: Beginners
Topic: USB Power Monitor
Replies: 3
Views: 995

Re: USB Power Monitor

If you like DIY you could make such an item for less than £10 delivered.
Search ebay for the needed components:
  • volt meter LED
    amp meter LED
    USB extension
by BerryPicker
Mon Mar 18, 2013 8:50 pm
Forum: Troubleshooting
Topic: Motion Server Crashes Upon Motion in Feed
Replies: 10
Views: 15520

Re: Motion Server Crashes Upon Motion in Feed

Ay31415 wrote: sudo nano /etc/modprobe.d/modprobe.conf
macintoshgeek wrote: I don't seem to have that module. Hmmmm...
The line I used to make the configuration file is:-
sudo nano /etc/modprobe.d/uvcvideo.conf
by BerryPicker
Mon Mar 11, 2013 1:23 pm
Forum: Python
Topic: RPIO: An extension of RPi.GPIO with interrupts, PWM and more
Replies: 84
Views: 19713

Re: RPIO: An extension of RPi.GPIO with interrupt management

I will implement that. I look forward to it. If holding off change notification is to become the built-in RPIO switch bounce strategy, it might help understanding if you included in the documentation an example to clarify proper usage. May I suggest that RPIO.add_interrupt_callback provides the 'de...
by BerryPicker
Mon Mar 11, 2013 11:42 am
Forum: Python
Topic: RPIO: An extension of RPi.GPIO with interrupts, PWM and more
Replies: 84
Views: 19713

Re: RPIO: An extension of RPi.GPIO with interrupt management

how do you handle debouncing with this Using the listen for GPIO example here http://pythonhosted.org/RPIO/rpio_py.html#example it seems we should expect to receive an interrupt for every switch contact bounce, and the callback function should print out a record of each switch contact bounce, the o...
by BerryPicker
Sun Mar 10, 2013 12:47 pm
Forum: Python
Topic: RPIO: An extension of RPi.GPIO with interrupts, PWM and more
Replies: 84
Views: 19713

Re: RPIO: An extension of RPi.GPIO with interrupt management

Would be nice of you to at least put a little bit of effort into posting why/how Yes, some of us need a little more hand holding to come on board. So, thank you for sharing your creation, and for giving usage examples to help beginners get started. For me, interrupt mamagement of the GPIO is fascin...
by BerryPicker
Sat Mar 09, 2013 6:26 pm
Forum: Python
Topic: invalid character identifier in copied code
Replies: 4
Views: 3365

Re: invalid character identifier in copied code

Yes, thank you joan . The fix works, but I see that the original spacing is lost, as there is no 0x20 character to replace the deleted 0xc2 and 0xa0. To preserve formatting, am I right in thinking the tr command must be used twice, first with -d to delete the 0xc2, then with -t to translate the 0xa0...
by BerryPicker
Sat Mar 09, 2013 5:47 pm
Forum: Python
Topic: invalid character identifier in copied code
Replies: 4
Views: 3365

invalid character identifier in copied code

When, using Midori, if I copy code from a Raspberry Pi Forum Topic Post, and paste it into a new window created from the IDLE3 Python Shell File Menu, then when I then click Run > Check Module a syntax error message box pops up with the message 'invalid character identifier'. On investigation, using...
by BerryPicker
Tue Mar 05, 2013 10:39 am
Forum: Beginners
Topic: Midory download limit
Replies: 5
Views: 718

Re: Midory download limit

For me, a Midori download collapses at 420Mb.
I have no problem downloading with NetSurf.
I have used NetSurf to download fresh Raspbian images without problem.

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