Go to advanced search

by Chris.Rowland
Thu Apr 19, 2012 10:46 pm
Forum: Other projects
Topic: Guiding a telescope
Replies: 10
Views: 6014

Re: Guiding a telescope

<t>Do you mean guiding as in collecting an image of a star field, detecting any movement and issuing guide commands to a mount or working out conversions from a star position in Ra and Dec to motor axis positions and drive rates?<br/> <br/> They are different problems, but both non-trivial.<br/> <br...
by Chris.Rowland
Thu Apr 19, 2012 9:14 pm
Forum: Troubleshooting
Topic: Editing config.txt
Replies: 15
Views: 30372

Re: Editing config.txt

<t>I've asked about getting GUI applications such as Leafpad and the file monitor to get admin access on a number of occasions and as far as I can tell it can't be done. You need to forget about the last 20 years of UI design and get into the terminal.<br/> <br/> Then, to get root access (which is L...
by Chris.Rowland
Thu Apr 19, 2012 8:45 pm
Forum: Troubleshooting
Topic: Win 32 disk imager
Replies: 45
Views: 82669

Re: Win 32 disk imager

<t>Joe Schmoe said: <br/> <br/> <br/> Chris, copying an .ISO (CD/DVD image file) to an SD card (presumably, FAT formatted from the factory) has nothing to do with what we are talking about here.<br/> <br/> <br/> <br/> I said I could write an ISO to a previously used SD card without doing anything el...
by Chris.Rowland
Thu Apr 19, 2012 2:18 pm
Forum: Troubleshooting
Topic: Win 32 disk imager
Replies: 45
Views: 82669

Re: Win 32 disk imager

Problems with Win32Disklimager don't seen to be universal.  I've used it to copy various iso files to the same SD card with no problem and no need to do anything else.  The original problem could be because it needs to run as administrator, when I run it it asks for UAC elevation automatically.
by Chris.Rowland
Thu Apr 19, 2012 11:27 am
Forum: Troubleshooting
Topic: Re: New Wiki page for troubleshooting
Replies: 20
Views: 21335

Re: New wiki page for troubleshooting

I've added a link to the power supply information in the hardware section. I put quite a lot about troubleshooting power supply issues there.

Hope that's OK, I'm new to wikis.
by Chris.Rowland
Thu Apr 19, 2012 11:18 am
Forum: Troubleshooting
Topic: Not booting up, stuck on Power LED, no OK LED.
Replies: 48
Views: 12029

Re: Not booting up, stuck on Power LED, no OK LED.

Did you try a different power cable with the different PSUs?

Are you able to measure the voltage on the Pi?

See http://elinux.org/RPi_Hardware.....y_Problems
by Chris.Rowland
Thu Apr 19, 2012 8:17 am
Forum: Beginners
Topic: No Signal
Replies: 29
Views: 10895

Re: No Signal

According to the commits in GitHub the class 10 SD card issue was fixed on March 17th, comment is "Fix for mmc timeouts when erasing multiple blocks".
by Chris.Rowland
Thu Apr 19, 2012 7:42 am
Forum: Beginners
Topic: Debian Admin Password
Replies: 19
Views: 19625

Re: Debian Admin Password

I guess it's an oversight, the debian version for the Pi definitely seems to do this.  I guess that the fix that jojopi suggested could be added to the image quite easily.

There's still the issue that it works with gparted but not for writing files from LXDE.
by Chris.Rowland
Thu Apr 19, 2012 7:38 am
Forum: Beginners
Topic: debian squeeze development tools
Replies: 4
Views: 2167

Re: debian squeeze development tools

<t>The latest debian image - debian6-13-04-2012.img comes with python and geany (a light IDE) but not scratch - unless I misunderstand how you get to it.<br/> <br/> The earlier version of debian doesn't so unless the vendor is confident about exactly what he's supplying I would not get it.<br/> <br/...
by Chris.Rowland
Thu Apr 19, 2012 7:24 am
Forum: Beginners
Topic: Debian Admin Password
Replies: 19
Views: 19625

Re: Debian Admin Password

<t>Yes, we went through this a week or two ago.<br/> <br/> Where would be best to put this? In the wiki somewhere but what page? I don't mind adding something.<br/> <br/> While either of these approaches used allow Gparted to be used from lxde neither help with moving or copying files using the file...
by Chris.Rowland
Wed Apr 18, 2012 10:42 am
Forum: Beginners
Topic: COM port
Replies: 34
Views: 20415

Re: COM port

<r>mahjongg said: <br/> <br/> <br/> The link was not working, but I assume you were talking about this breakout box:<br/> <br/> <URL url="http://www.bitwizard.nl/catalo.....ucts_id=41">http://www.bitwizard.nl/catalo.....ucts_id=41</URL><br/> <br/> <br/> That link doesn't work either. Maybe it's some...
by Chris.Rowland
Wed Apr 18, 2012 10:31 am
Forum: General discussion
Topic: eBay madness
Replies: 16
Views: 2453

Re: eBay madness

<t>piglet said: <br/> <br/> <br/> I'd have liked to see a few hundred dumped on there by the foundation to provide funds to the foundation, not to scalpers <br/> <br/> <br/> <br/> That's a very reasonable idea but wouldn't it just cause cries of "they are selling my Pi!" from people who feel they ha...
by Chris.Rowland
Wed Apr 18, 2012 10:18 am
Forum: Troubleshooting
Topic: Power Supply Issues
Replies: 2
Views: 2030

Re: Power Supply Issues

I've added some notes about power supply issues to the wiki:

http://elinux.org/RPi_Hardware#Power

Hope this is helpful.
by Chris.Rowland
Wed Apr 18, 2012 9:36 am
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 335942

Re: Debian Hard Float (armhf) for RPi

Could your bandwidth be reduced considerably by only providing a torrent?  I realise than not everyone can use this but there seems to be a number of generous people with bandwidth to spare who can provide mirrors.
by Chris.Rowland
Wed Apr 18, 2012 8:05 am
Forum: Beginners
Topic: Wireless Keyboard/Mouse will it work?
Replies: 12
Views: 6681

Re: Wireless Keyboard/Mouse will it work?

Thanks for the information about the wireless keyboard/mouse.  It WBN if people could post what they have tried and how it works.

I've been looking at the Logitech MK260 set, it seems a reasonable compromise between cheap and reliable, has anyone tried it?  Thanks for any feedback.
by Chris.Rowland
Tue Apr 17, 2012 12:26 pm
Forum: Troubleshooting
Topic: Intermittent network problems (Debian 13-04)
Replies: 28
Views: 9857

Re: Intermittent network problems (Debian 13-04)

<t>Just a few thoughts:<br/> <br/> Is the meter accurate? The way all the voltages are low makes me wonder.<br/> <br/> It's interesting that a working keyboard drops the voltage by 0.2V I would guess that the keyboard is taking less than 100mA so it seems to be a big voltage drop.<br/> <br/> Somethi...
by Chris.Rowland
Tue Apr 17, 2012 9:35 am
Forum: General discussion
Topic: Worthwhile me buying a pi? Want to learn a language for running calculations ...
Replies: 15
Views: 2622

Re: Worthwhile me buying a pi? Want to learn a language for running calculations ...

<t>If you are doing complex numerical computation then you will almost certainly need more processing power than the Pi can deliver - and that probably means some sort of personal computer. They deliver a lot of performance very cheaply.<br/> <br/> I think that when learning something new it's best ...
by Chris.Rowland
Tue Apr 17, 2012 7:45 am
Forum: General discussion
Topic: Boot menu to choose distro and/or memory model of choice.
Replies: 54
Views: 18128

Re: Boot menu to choose distro and/or memory model of choice.

Speculation but 1920 * 1200 * 4 bytes per pixel * 2 frame buffers comes to 18 MB. The 4 bytes per pixel could be red, green, blue and alpha (aka transparency).
by Chris.Rowland
Tue Apr 17, 2012 7:27 am
Forum: Beginners
Topic: SD card image writing - I'm puzzled
Replies: 6
Views: 2747

Re: SD card image writing - I'm puzzled

I've added a note to the wiki saying that in Windows only about 75MB of the SD card will be visible.
by Chris.Rowland
Mon Apr 16, 2012 4:25 pm
Forum: General discussion
Topic: Delivery !
Replies: 72
Views: 23167

Re: Delivery !

Good to see it's the correct CE mark

Congratulations and have fun!!!
by Chris.Rowland
Mon Apr 16, 2012 2:53 pm
Forum: Beginners
Topic: sd image and more
Replies: 10
Views: 3733

Re: sd image and more

<t>I don't see this issue with not being able to overwrite an existing SD card image at all, and I spent some time yesterday evening trying it.<br/> <br/> Use Win32DiskImager to put an image on a SD card - it's there.<br/> <br/> Use Win32DiskImager to put a different image there - and the new one is...
by Chris.Rowland
Mon Apr 16, 2012 1:02 pm
Forum: Beginners
Topic: Where can you get 'bootable' SD cards?
Replies: 10
Views: 7521

Re: Where can you get 'bootable' SD cards?

<t>Do you mean a SD card that already has the Raspberry Pi operating system loaded on it?<br/> <br/> If so that's not available yet, you need to download an image of the card and burn the image to it yourself.<br/> <br/> Most SD cards will do, I would start with a 4Gb class 4 or class 6 SanDisk. Try...
by Chris.Rowland
Mon Apr 16, 2012 12:54 pm
Forum: Other projects
Topic: Using Laptop as keyboard and mouse
Replies: 22
Views: 20502

Re: Using Laptop as keyboard and mouse

<t>No disrespect but something I see is that people often present a problem not as a problem but as a solution.<br/> <br/> It's often useful to dig down and find out what the problem really is because there can be a much better solution than the one the user wants. That's where the networking sugges...
by Chris.Rowland
Mon Apr 16, 2012 12:27 pm
Forum: Beginners
Topic: Writing to, and backing up SD Card (Using Windows, Alternative Software)
Replies: 42
Views: 30489

Re: Writing to, and backing up SD Card (Using Windows, Alternative Software)

<r>I tried using Win32DiskImager last night and it seems fine, it overwrites whatever is there.<br/> <br/> Format in Windows said it was only doing 75 mb but it might actually do the lot.<br/> <br/> There's a low level formatter for SD cards:<br/> <br/> <URL url="https://www.sdcard.org/downloads/for...
by Chris.Rowland
Mon Apr 16, 2012 12:02 pm
Forum: Beginners
Topic: What version of Linux is it?
Replies: 25
Views: 4728

Re: What version of Linux is it?

<t>JamesH said: <br/> <br/> <br/> Chris Rowland said: <br/> <br/> <br/> So, as an admin you think that being smug, patronising and unhelpful is a good thing. This is not a good example.<br/> <br/> Linux needs to move into the 21st century and pay some attention to application design and usability an...

Go to advanced search