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by AndrewS
Mon May 07, 2012 11:09 pm
Forum: General discussion
Topic: Colour-coded PCB photos
Replies: 64
Views: 18065

Re: Colour-coded PCB photos

<t>jbeale said: <br/> <br/> <br/> I wonder if there's some way to do something in javascript or the like, where you hover your mouse over the text and the matching parts light up.<br/> <br/> <br/> Something like this?   http://www.andrewscheller.co.u.....dules.html<br/> <br/> Let me know if you like...
by AndrewS
Mon May 07, 2012 3:15 pm
Forum: General discussion
Topic: Colour-coded PCB photos
Replies: 64
Views: 18065

Re: Colour-coded PCB photos

Robert_M said:

one pair with all the BCM2835 info, and the second pair with everything else? 
The BCM2835 is such a highly-integrated SoC, it's basically all "BCM2835 info"
by AndrewS
Mon May 07, 2012 10:50 am
Forum: General discussion
Topic: Colour-coded PCB photos
Replies: 64
Views: 18065

Re: Colour-coded PCB photos

<r>Yeah, I had trouble choosing enough different colours (it's obvious I'm not a designer!), with the result that it's hard to distinguish between them   I decided to stick to the "modules" used by the schematics PDF, rather than try to invent/decide my own component grouping.<br/> <br/> I guess the...
by AndrewS
Mon May 07, 2012 4:12 am
Forum: General discussion
Topic: Colour-coded PCB photos
Replies: 64
Views: 18065

Re: Colour-coded PCB photos

<r>Hi all,<br/> I've "combined" the PCB photos from <URL url="http://www.elinux.org/RPi_Hardware">http://www.elinux.org/RPi_Hardware</URL> with the PCB schematics, to colour-code each 'component' on each side of the board, according to which schematic module it's used by.<br/> Could be useful as a t...
by AndrewS
Mon May 07, 2012 3:49 am
Forum: General discussion
Topic: Power via gpio
Replies: 5
Views: 1481

Re: Power via gpio

It is mentioned at http://www.elinux.org/RPi_Hardware#Power but that doesn't count as a FAQ page
by AndrewS
Mon May 07, 2012 3:28 am
Forum: General discussion
Topic: Reverse engineering GPU drivers from other devices using the BCM2835
Replies: 15
Views: 4677

Re: Reverse engineering GPU drivers from other devices using the BCM2835

<r>I managed to "reverse engineer" (some) information from the schematics PDF that was released: <URL url="http://www.elinux.org/RPi_BCM2835_Pinout">http://www.elinux.org/RPi_BCM2835_Pinout</URL><br/> <br/> Yeah, this doesn't help with writing code, but people might find it interesting nonetheless.<...
by AndrewS
Fri May 04, 2012 12:53 am
Forum: General discussion
Topic: Wiring for the Raspberry Pis GPIO
Replies: 20
Views: 8402

Re: Wiring for the Raspberry Pis GPIO

<r>GordonH said: <br/> <br/> <br/> And as usual in the unix world, there are 1000 ways of doing something <br/> <br/> (and have you actually poked /sys/class/gpio entries yourself from a script? It's great that they exist, but a bit of a pita - the Python wrapper is a good step forwards in that depa...
by AndrewS
Thu May 03, 2012 11:46 pm
Forum: General discussion
Topic: Securing your RasPi and external HDD's/USB drives.
Replies: 9
Views: 1889

Re: Securing your RasPi and external HDD's/USB drives.

<t>jell0zz said:<br/> <br/> <br/> <br/> However, there seems to be no real solution. Almost every solution i have encountered needs a computer side client to unlock the client on the drive.<br/> <br/> What I would love is a way to just plug in the drive, let the window pop up which tells you it is l...
by AndrewS
Thu May 03, 2012 11:30 pm
Forum: General discussion
Topic: What is this ?
Replies: 27
Views: 10006

Re: What is this ?

There's more information about these, and other RasPi connectors, on the wiki:

http://elinux.org/RPi_Hardware
by AndrewS
Thu May 03, 2012 11:26 pm
Forum: General discussion
Topic: Early Acorn Risc Machine (ARM precursor) promo video
Replies: 1
Views: 679

Re: Early Acorn Risc Machine (ARM precursor) promo video

Couldn't see if anyone has posted this yet, but I thought it was worth sharing

http://hackaday.com/2012/05/02.....c-machine/

A long lost grandfather of the RasPi
by AndrewS
Thu May 03, 2012 12:52 am
Forum: General discussion
Topic: Wiring for the Raspberry Pis GPIO
Replies: 20
Views: 8402

Re: Wiring for the Raspberry Pis GPIO

error404 said:


Isn't this why the driver exports the /sys/class/gpio interface to userspace...?


Yeah, exactly like this python library does http://pypi.python.org/pypi/RPi.GPIO
by AndrewS
Mon Apr 30, 2012 11:53 am
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 372756

Re: Debian Hard Float (armhf) for RPi

<t>bleep42 said: <br/> <br/> <br/> I naively assumed all float operations would be posted through a common interface, which would either then handle them itself in software, or, if a hard float unit was available pass them on to that.<br/> <br/> <br/> AIUI that would only work if every single floati...
by AndrewS
Sat Apr 28, 2012 5:00 pm
Forum: General discussion
Topic: We've just released the schematics!
Replies: 34
Views: 8113

Re: We've just released the schematics!

<r>Even more awesomeness... <br/> <br/> I've copied the GPIO Alternative Functions table from BCM2835-ARM-Peripherals.pdf to the wiki <URL url="http://elinux.org/RPi_BCM2835_GPIOs">http://elinux.org/RPi_BCM2835_GPIOs</URL> and made it fully hyper-linked and cross-referenced. And then added links to ...
by AndrewS
Thu Apr 26, 2012 10:40 pm
Forum: Other projects
Topic: Re: Beta board
Replies: 6
Views: 1817

Re: Beta board "Xray" image

lesliew said:


Very Nice, would make a nice desktop background



Heh, cool idea

http://elinux.org/RPi_xray_wallpapers
by AndrewS
Thu Apr 26, 2012 12:48 pm
Forum: Raspbian
Topic: HISTORY: The start of raspbian (Debian Hard Float (armhf) for RPi)
Replies: 613
Views: 372756

Re: Debian Hard Float (armhf) for RPi

<t>mpthompson said: <br/> <br/> <br/> Not sure how many people are still following this thread and my adventures/misadventures in getting a version of Debian hard float going.<br/> <br/> <br/> I am   Spent yesterday evening and this morning reading through this entire thread. As other posters have s...
by AndrewS
Thu Apr 26, 2012 1:16 am
Forum: Python
Topic: Re: Simple Terminal (framebuffer) menu system in python
Replies: 13
Views: 8321

Re: Simple Terminal (framebuffer) menu system in python

<r>Huh?! Dunno what the forum did there! I tried to post a link to<br/> <br/> Edit: Argh it did it again. <br/> <br/> <br/> <br/> <br/> <br/> 123<br/> <br/> <br/> <br/> #!/usr/bin/env python<br/> # -*- coding: utf-8 -*-<br/> # Topmenu and the submenus are based of the example found at this location ...
by AndrewS
Thu Apr 26, 2012 1:12 am
Forum: Python
Topic: Re: Simple Terminal (framebuffer) menu system in python
Replies: 13
Views: 8321

Re: Simple Terminal (framebuffer) menu system in python

<r>As an experienced programmer, seeing duplicated data (like the way you list every menu item twice) and/or hardcoded values makes me cringe <br/> <br/> So I've updated your program so the the entire menu structure is only specified once, and you can have as many sub-menus, sub-sub-menus etc. as yo...
by AndrewS
Wed Apr 25, 2012 3:23 pm
Forum: General discussion
Topic: We've just released the schematics!
Replies: 34
Views: 8113

Re: We've just released the schematics!

<t>mole125 said: <br/> <br/> Only think I wonder is whether you should swap the white and yellow so that if it is coloured it is connected and if it is plain white it is unconnected?  Or make the white a different colour (blue?)<br/> I chose green for non-pins to resemble the "bare PCB" in the pictu...
by AndrewS
Wed Apr 25, 2012 3:06 pm
Forum: General discussion
Topic: We've just released the schematics!
Replies: 34
Views: 8113

Re: We've just released the schematics!

<r>Apologies for blowing my own trumpet, but I've made <URL url="http://elinux.org/RPi_BCM2835_Pinout">http://elinux.org/RPi_BCM2835_Pinout</URL> even more awesome <br/> <br/> I've rotated the table so it matches the actual chip layout, and I've added colouring to the table so you can instantly see ...
by AndrewS
Wed Apr 25, 2012 3:33 am
Forum: Other projects
Topic: Re: Beta board
Replies: 6
Views: 1817

Re: Beta board

I've only just joined the forum, so I dunno if somebody has already done something similar to this, but I thought what I made this evening is cool so I'd share it anyway ;) I took the high-res images from http://elinux.org/RPi_Hardware and very carefully resized and aligned them, and then used a bit...
by AndrewS
Tue Apr 24, 2012 9:56 pm
Forum: General discussion
Topic: We've just released the schematics!
Replies: 34
Views: 8113

Re: We've just released the schematics!

<t>Michael said: <br/> <br/> <br/> It would be interesting to number those vias in the second photo and report to which pins each is connected.<br/> <br/> <br/> I considered that, but the photo isn't quite sharp enough to follow all the traces (they're very close together!) and there's quite a lot o...
by AndrewS
Tue Apr 24, 2012 6:51 pm
Forum: General discussion
Topic: We've just released the schematics!
Replies: 34
Views: 8113

Re: We've just released the schematics!

<r>I've done a bit more analysis, and I've now managed to map the BCM2835 pins back to the RaspberryPi circuit board itself <br/> <br/> See the images at the bottom of <URL url="http://elinux.org/RPi_BCM2835_Pinout">http://elinux.org/RPi_BCM2835_Pinout</URL><br/> <br/> (and I've added a link to the ...
by AndrewS
Tue Apr 24, 2012 11:50 am
Forum: General discussion
Topic: We've just released the schematics!
Replies: 34
Views: 8113

Re: We've just released the schematics!

<r>jbeale said: <br/> <br/> <br/> I don't know how you found the patience to generate that!<br/> <br/> <br/>   It was a very wet weekend…<br/> <br/> I'm glad to see people appreciate it. If anyone spots any errors, I"m happy to fix them.<br/> <br/> mjtessmer said: <br/> <br/> <br/> Gert:  Can you te...

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