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'[PIC]: Dwarf boards.'
2004\01\13@162026 by

picon face
Wouter van Ooijen wrote :

> check http://www.voti.nl/dwarf

Hi Wouter.

I just took a look at your "Dwarf boards". They look nice.

In the DN001.PDF document ("introduction, overview and reference"),
there are some products that don't have any pictures. Are those
not released yet ? They seems to have prices in the price list,
though...

Jan-Erik.

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2004\01\13@163237 by Wouter van Ooijen

face picon face
> In the DN001.PDF document ("introduction, overview and reference"),
> there are some products that don't have any pictures. Are those
> not released yet ? They seems to have prices in the price list,
> though...

For those I have only a print design (at least untill the next Olimex
shipment arrives), or only a prototype, or I did not take a good picture
yet. The DwarfBoard 'product group' still very much in development.

Wouter van Ooijen

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2004\01\13@164312 by D. Jay Newman

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> Wouter van Ooijen wrote :
>
> > check http://www.voti.nl/dwarf
>
> Hi Wouter.
>
> I just took a look at your "Dwarf boards". They look nice.

Interesting. I like the idea.
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2004\01\13@164530 by

picon face
Wouter van Ooijen wrote :

> > In the DN001.PDF document ("introduction, overview and reference"),
> > there are some products that don't have any pictures. Are those
> > not released yet ? They seems to have prices in the price list,
> > though...
>
> For those I have only a print design (at least untill the next Olimex
> shipment arrives), or only a prototype, or I did not take a
> good picture
> yet. The DwarfBoard 'product group' still very much in development.

OK, I understand. It seems as a fair bit of commitment there...
Perhaps just add a "release status" column to the product list
in the overview ?

Are any parts orderable today, and if so, which of them ?

And, b.t.w, with this flexible design, it will always be
"in development" with new interface boards added, right ? :-)

Jan-Erik.

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2004\01\13@172502 by Robert Reimiller

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On Tue, 13 Jan 2004 22:18:31 +0100, you wrote:
>I just took a look at your "Dwarf boards". They look nice.

Please, they preferred to be called "little boards". :)

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2004\01\14@025429 by Wouter van Ooijen

face picon face
> OK, I understand. It seems as a fair bit of commitment there...
> Perhaps just add a "release status" column to the product list
> in the overview ?

I'll think about that.

> Are any parts orderable today, and if so, which of them ?

DB016 is on stock, kit, PCB and build. For the others PCBs are on order.
If you want you can order those today, but you will have to wait a few
weeks till I have the boards.

> And, b.t.w, with this flexible design, it will always be
> "in development" with new interface boards added, right ? :-)

Probably, DB008 for instance is part of a design I made for a customer.
If this takes off new boards will be added,  both on demand and on my
initiative.

Wouter van Ooijen

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2004\01\14@031748 by

picon face
Wouter van Ooijen wrote :

> > Are any parts orderable today, and if so, which of them ?
>
> DB016 is on stock, kit, PCB and build. For the others PCBs
> are on order.
> If you want you can order those today, but you will have to
> wait a few weeks till I have the boards.

>
> > And, b.t.w, with this flexible design, it will always be
> > "in development" with new interface boards added, right ? :-)
>
> Probably, DB008 for instance is part of a design I made for a
> customer. If this takes off new boards will be added,  both on
> demand and on my initiative.

I understand that. No problem.

Now what about the possibility to make *own* interface boards
that works with the "Dwarf bus" ? Would that be free or will
there be some kind of licensing to use that part of your
design in a "3-part" design ?

Just 2 final questions... :-)

The "C020", that's the flat cable between the CPU board and the
peripheral boards, right ?

The Wisp628 connector on the DB016/DB008, is that for the usuable
"game port cable" that you can pull from an old sound card ?

I'm probably going to order a DB016 (or DB008 if available/orderable)
kit and some other stuff, I'll take that to a private communication...
:-)

Thanks !
Jan-Erik.

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2004\01\14@033903 by Wouter van Ooijen

face picon face
> Now what about the possibility to make *own* interface boards
> that works with the "Dwarf bus" ? Would that be free or will
> there be some kind of licensing to use that part of your
> design in a "3-part" design ?

I don't think assigning a function to 10 pins in a fairly obvious way
can be claimed as intellectual property. And it probably would help me
sell processor boards if other people make and/or market peripheral
boards. And the pin assignment was copied from an existing Atmel board
anyway, which was already copied to other AVR-boards. So feel free to do
so. The connector is the very common 10-pin shrouded type.

> The "C020", that's the flat cable between the CPU board and the
> peripheral boards, right ?

Correct. Note that I have no objections whatsoever to anyone making his
own cables. But some customers insist on buying everything, presumably
it gives them a better position towards their boss (and me) if something
does not work.

> The Wisp628 connector on the DB016/DB008, is that for the usuable
> "game port cable" that you can pull from an old sound card ?

It is the same type of cable, but what you buy was not salvaged from an
old computer.

> I'm probably going to order a DB016 (or DB008 if available/orderable)
> kit and some other stuff, I'll take that to a private communication...

I'll probably hear from you. I quick check of my stock showed one DB001
and three DB008 PCBs. DB008 is usefull only when you have a matching LCD
(I seem to recall you have some LCDs :).

Wouter van Ooijen

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2004\01\14@040845 by

picon face
Wouter van Ooijen wrote :

> > The Wisp628 connector on the DB016/DB008, is that for the usuable
> > "game port cable" that you can pull from an old sound card ?
>
> It is the same type of cable, but what you buy was not
> salvaged from an old computer.

Sorry, I didn't ment that ! I'm currently using my Wisp628 with
an old sound card cable and I'd just like to use the same cable,
if possible... :-)

>
> > I'm probably going to order a DB016 (or DB008 if
> available/orderable)
> > kit and some other stuff, I'll take that to a private
> communication...
>
> I'll probably hear from you. I quick check of my stock showed
> one DB001 and three DB008 PCBs. DB008 is usefull only when you have a
> matching LCD (I seem to recall you have some LCDs :).

OK, I didn't find any specific PDF file on the DB008 (as there is for
the DB016) so it's a bit hard to tell it's features...

Jan-Erik.

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2004\01\14@041713 by Wouter van Ooijen

face picon face
> Sorry, I didn't ment that ! I'm currently using my Wisp628 with
> an old sound card cable and I'd just like to use the same cable,
> if possible... :-)

No offense taken! You can count on my designs re-using the same
connectors etc. over and over.

> OK, I didn't find any specific PDF file on the DB008 (as there is for
> the DB016) so it's a bit hard to tell it's features...

18-pin PIC, 7805, 2 DB connectors, one connector for UART only, ICD2 &
Wisp628 connectors, intended to be mounted at the back of a 1 or 2 line
LCD. I solde some of these to a customer, but build and with a custom
analog interface and coding, so I did not need the description document
yet. I am a bit busy now, making the document will have to wait (or it
will quickly rise on the priority list when some bloke orders one).

Wouter van Ooijen

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2004\01\14@085110 by Intosh, Ph.D.

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Wouter van Ooijen  says:
>However, I am almost certainly competing between my "Controller" board and
>the DB0016. :-)
>Which just might be an indication that we are both following the same good
>idea?


Probably so.  How did you come to this design?  Was it a Eureka
moment?  Were you helping the kids play with LEGOs?

For me, I was trying to make something that would let me look at RS-232 and
it was a single board idea, when it got too big for the EAGLE freeware.

When I split it into two boards and had to think about the interface, then
all my "modular software" practices woke up and the design got much cleaner.

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2004\01\14@092019 by Wouter van Ooijen

face picon face
> Probably so.  How did you come to this design?  Was it a Eureka
> moment?  Were you helping the kids play with LEGOs?

I am a software guy, much more than hardware. The idea has been in the
back of my head for a long time in one form or another. And finally
someone called who wanted to buy a bunch of boards for his classroom, so
I went ahead and created a few boards. Various PIClist discussions about
the 'ideal starter kit' also contributed to the idea, mainly by
convincing me that a one-fits-all approach is not the way to go. The
simmsticks from Dontronics are also an inspiration, although IMHO Don
has not taken full advantage of the possibilities of modularity.

Wouter van Ooijen

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2004\01\14@102452 by biozen

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part 1 1353 bytes content-type:text/plain (decoded 7bit)

> When I split it into two boards and had to think about the interface, then all my "modular software" practices woke up and the design got much cleaner.

Isn't this similar to the hardware system used in PCs?...

The various modules in such a 'modular' and scalable system could be:
1. Motherboard (PIC, oscillator, lots of connectors),
2. Power supply board (Xmer, 5V...),
3. LCD / LED board,
4. Input board (sensors, signal conditioners, etc.),
5. Output board (optos, etc.),
6. Keypad board,
7. RS232 board,
8. ...

Developing a project then involves merely connecting the PIC motherboard to the other boards and then burning the PIC with the firmware. And Olin's DE modules could then be called "drivers" like in the computer world.

I came up with such an idea while developing my hobby project because EAGLE (Free version) limited the size of the PCB I could design; and I couldn't fit all the components on the same board. Also, I could never autoroute the tracks completely.   ;-)

It&#8217;s a great idea. Very convenient and very clean. Stack boards, one over the other. You save on space; and perhaps, on EMI considerations too.

Regards,
Mohit.

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2004\01\17@204349 by Bob Barr

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On Tue, 13 Jan 2004 22:30:15 +0100, Wouter van Ooijen wrote:

>> In the DN001.PDF document ("introduction, overview and reference"),
>> there are some products that don't have any pictures. Are those
>> not released yet ? They seems to have prices in the price list,
>> though...
>
>For those I have only a print design (at least untill the next Olimex
>shipment arrives), or only a prototype, or I did not take a good picture
>yet. The DwarfBoard 'product group' still very much in development.
>

Excellent concept. I really like it.  :=)

Two minor points regarding the web page:

I'd suggest indicating the availability of the archive file somewhere
nearer the beginning of the page rather that at the bottom of it. I'm
sure that many visitors to your site are downloading a number of the
individual files, as I did, before discovering that all the files are
available as a single download.

Also, the archive file is almost 6 megs long rather than the 2 megs
that you list.


Regards, Bob

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2004\01\18@022835 by Wouter van Ooijen

face picon face
> Two minor points regarding the web page:

Thanks, I'll look into both.

Wouter van Ooijen

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