Re: schematics in PDF form?

2009-06-06 Thread Joerg Reisenweber
Am Sa  6. Juni 2009 schrieb Wolfgang Spraul:
 Joerg,
 
  I think this thread should move to [GTA03] (wonder why it's called that 
way)
 
 How about the other way round?
 Looks like gta02-core is the way forward (and as you said the [gta03] 
 list name is even wrong).
 I propose to close the [gta03] mailing list and move discussions to the 
 [hardware] list.
 
 Wolfgang

No good idea. I like the precise focus of [hw]. Spamming it with another 
project would cause at least me not reading it anymore.
This list is meant for GTA02 (+gta01?) hw issues/topics.
gta02-core IS NOT gta02

my 2 €cent
jOERG


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Re: schematics in PDF form?

2009-06-06 Thread Werner Almesberger
[ Cc to the gta03 list added ]

Joerg Reisenweber wrote:
 This list is meant for GTA02 (+gta01?) hw issues/topics.

I guess that's the problem with this sort of list - you can never
be quite sure what it's about :-) E.g., on the kernel lst, we also
had stuff for GTA03-6410, and it didn't seem out of place. Of
course, the kernel is per se shared, while hardware projects don't
necessarily have one big project tree.

I agree that a list called gta03 is not an ideal home for a
project called gta02-core, and I'd also be unhappy if the talk
about gta02-core would prevent discussion about other projects or
project ideas.

I believe there is room for a lot more projects than gta02-core,
be it in parallel or as successors. So having a place to discuss
them is valuable. One might actually just rename gta03 to
future, to make it clear :-)

There is a risk that having discussions of different projects
mixed on a single list will cause confusion. E.g., if three
projects, let's say Openmoko's GTA02, gta02-core, and JoergPhone,
all share hardware, it will be mighty confusing if someone
starts discussing the USB current without precisely identifying
the project in each and every mail.

On the other hand, the more lists you have, the more crossposts
and discussions happening on the wrong list.

So, all things considered, I think creating a new list for
gta02-core makes sense. I'm not sure what to go with the gta03
list, if anything.

Opinions ?

- Werner

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Re: schematics in PDF form?

2009-06-05 Thread Hadyn van der Berg

 Yes, the new board that's still in development.

 2009/6/5 Al Johnson openm...@mazikeen.demon.co.uk

 On Friday 05 June 2009, Hadyn van der Berg wrote:
  Hi,
  I was wondering if someone could print the schematics to PDF for easy
  viewing?

 I assume you are talking about schematics for the gta02-core project since
 the
 schematics for gta01 and gta02 were released as pdf. Is this correct?

 http://downloads.openmoko.org/developer/schematics/GTA01/
 http://downloads.openmoko.org/developer/schematics/GTA02/



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Re: schematics in PDF form?

2009-06-05 Thread Werner Almesberger
Hadyn van der Berg wrote:
  Yes, the new board that's still in development.

We haven't started the schematics yet. I agree, easy access to the
material is important. It sometimes only takes seconds to spot a bug.
It would be foolish to make people waste these precious seconds
wrestling with installation tasks instead.

So ... of course there's something more easily accessible :-) This is
the collection of our circuit symbols, minus a few from the last few
days that I still have to add:

http://people.openmoko.org/werner/gta02-core/gta02-core-expanded-all.ps.gz

There are a few anomalies like odd text locations and a few missing
pin numbers, which are caused by the printing process. I hope to get
rid of these over the next few days.

We don't have PDF at the moment, due to problems with the library
providing the printing functions.

Also, the pin type is printed next to the each pin. That's to help
review. When the symbols are used in real schematics, this pin type
isn't visible.

Hardware design experience is just what we need. So, welcome ! :)

- Werner

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Re: schematics in PDF form?

2009-06-05 Thread Hadyn van der Berg
Hi  Werner,
Can I ask, what format this is in?  I'm presuming GZIP , but I'm struggling
to open it.

Is there any document about what the plan is for the new board?  Based on
which existing hardware, improvements to be made, etc.

What is the thinking about using different chips, for example the power
management or audio section?
Would it be preferable to stick to the existing chips due to existing
software/driver implementation or, if there is a justifiable reason, would
the group be prepared to change?

I presume cost is an issue, since I believe the project isn't funded
commercially . I would guess then that a motivating factor would be lower
cost devices.

Do you struggle to obtain components, when it comes time for manufacture,
and so is another issue, ease of sourcing of components?  Some parts have
minimum order quantities, or are only available on large reels.


Sorry for all the questions - but I think they're important to know, when
the product is developed.

Hadyn


2009/6/5 Werner Almesberger wer...@openmoko.org

 Hadyn van der Berg wrote:
   Yes, the new board that's still in development.

 We haven't started the schematics yet. I agree, easy access to the
 material is important. It sometimes only takes seconds to spot a bug.
 It would be foolish to make people waste these precious seconds
 wrestling with installation tasks instead.

 So ... of course there's something more easily accessible :-) This is
 the collection of our circuit symbols, minus a few from the last few
 days that I still have to add:

 http://people.openmoko.org/werner/gta02-core/gta02-core-expanded-all.ps.gz

 There are a few anomalies like odd text locations and a few missing
 pin numbers, which are caused by the printing process. I hope to get
 rid of these over the next few days.

 We don't have PDF at the moment, due to problems with the library
 providing the printing functions.

 Also, the pin type is printed next to the each pin. That's to help
 review. When the symbols are used in real schematics, this pin type
 isn't visible.

 Hardware design experience is just what we need. So, welcome ! :)

 - Werner

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Re: schematics in PDF form?

2009-06-05 Thread Werner Almesberger
Joerg Reisenweber wrote:
 I think this thread should move to [GTA03] (wonder why it's called that way)

Agreed. Hadyn, I'll just forward your mail to the gta03 list,
https://lists.openmoko.org/mailman/listinfo/gta03
and then cross-post my answer.

And yes, one of these days, we'll have make a new list. While it's
nice to have everyone's attention, I don't really want gta02-core
to shush any other projects that go in the same general direction.

- Werner

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Re: schematics in PDF form?

2009-06-05 Thread Wolfgang Spraul
Joerg,

 I think this thread should move to [GTA03] (wonder why it's called that way)

How about the other way round?
Looks like gta02-core is the way forward (and as you said the [gta03] 
list name is even wrong).
I propose to close the [gta03] mailing list and move discussions to the 
[hardware] list.

Wolfgang

Joerg Reisenweber wrote:
 Am Fr  5. Juni 2009 schrieb Hadyn van der Berg:
   
 Hi  Werner,
 Can I ask, what format this is in?  I'm presuming GZIP , but I'm struggling
 to open it.

 Is there any document about what the plan is for the new board?  Based on
 which existing hardware, improvements to be made, etc.

 What is the thinking about using different chips, for example the power
 management or audio section?
 Would it be preferable to stick to the existing chips due to existing
 software/driver implementation or, if there is a justifiable reason, would
 the group be prepared to change?

 I presume cost is an issue, since I believe the project isn't funded
 commercially . I would guess then that a motivating factor would be lower
 cost devices.

 Do you struggle to obtain components, when it comes time for manufacture,
 and so is another issue, ease of sourcing of components?  Some parts have
 minimum order quantities, or are only available on large reels.


 Sorry for all the questions - but I think they're important to know, when
 the product is developed.

 Hadyn


 2009/6/5 Werner Almesberger wer...@openmoko.org

 
 Hadyn van der Berg wrote:
   
 Yes, the new board that's still in development.
   
 We haven't started the schematics yet. I agree, easy access to the
 material is important. It sometimes only takes seconds to spot a bug.
 It would be foolish to make people waste these precious seconds
 wrestling with installation tasks instead.

 So ... of course there's something more easily accessible :-) This is
 the collection of our circuit symbols, minus a few from the last few
 days that I still have to add:

 http://people.openmoko.org/werner/gta02-core/gta02-core-expanded-all.ps.gz

 There are a few anomalies like odd text locations and a few missing
 pin numbers, which are caused by the printing process. I hope to get
 rid of these over the next few days.

 We don't have PDF at the moment, due to problems with the library
 providing the printing functions.

 Also, the pin type is printed next to the each pin. That's to help
 review. When the symbols are used in real schematics, this pin type
 isn't visible.

 Hardware design experience is just what we need. So, welcome ! :)

 - Werner

   

 I think this thread should move to [GTA03] (wonder why it's called that way)
 /j
   
 

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