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'[pic] USB Business card'
2010\11\06@105037 by Michael Watterson

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 Which PIC would you pick to make one?

http://www.slashgear.com/frank-zhao-creates-flat-usb-business-card-05112690

2010\11\06@131637 by Harold Hallikainen

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>   Which PIC would you pick to make one?
>
> www.slashgear.com/frank-zhao-creates-flat-usb-business-card-05112690/
>

2010\11\06@133135 by Tamas Rudnai

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part 1 513 bytes content-type:text/plain; charset="iso-8859-1" (decoded quoted-printable)

It is not a new thing. More or less flash disks are using this kind or
connector already (see attachment).

BTW: I believe this is a soft usb module on that AVR, which is very hard to
do on a PIC.

Tamas



On Sat, Nov 6, 2010 at 5:16 PM, Harold Hallikainen
<spam_OUTharoldTakeThisOuTspamhallikainen.org>wrote:

>
> >   Which PIC would you pick to make one?
> >
> >
> www.slashgear.com/frank-zhao-creates-flat-usb-business-card-05112690/
> > --

2010\11\06@141925 by Michael Watterson

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 On 06/11/2010 17:31, Tamas Rudnai wrote:
> It is not a new thing. More or less flash disks are using this kind or
> connector already (see attachment).
>
> BTW: I believe this is a soft usb module on that AVR, which is very hard to
> do on a PIC.
>
> Tamas
>
Well a PIC18F2550 SMD isn't big and has USB. I've done USB on JAL on the PIC18F4550 and powered it + Graphics LCD from the USB.
But there may be better choice. the JALV2 USB libraries seem easy to use on 18Fxxxx and 18FxxJxx that has USB built in.

So no-one have a preference on PIC 18F that has built in USB?

What could you add to make it a more useful gift but still cheap enough to give away?

2010\11\06@152142 by Oli Glaser

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On 06/11/2010 18:19, Michael Watterson wrote:
>    On 06/11/2010 17:31, Tamas Rudnai wrote:
>> It is not a new thing. More or less flash disks are using this kind or
>> connector already (see attachment).
>>
>> BTW: I believe this is a soft usb module on that AVR, which is very hard to
>> do on a PIC.
>>
>> Tamas
>>
> Well a PIC18F2550 SMD isn't big and has USB. I've done USB on JAL on the
> PIC18F4550 and powered it + Graphics LCD from the USB.
> But there may be better choice. the JALV2 USB libraries seem easy to use
> on 18Fxxxx and 18FxxJxx that has USB built in.
>
> So no-one have a preference on PIC 18F that has built in USB?
>
> What could you add to make it a more useful gift but still cheap enough
> to give away?
>

Off the top of my head, I'd maybe use something like the 18F24J50. Not sure about what you could add to it, have to think about that one. Be nice if there was a similar software USB option for PICs..

2010\11\06@153933 by Tamas Rudnai

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Good idea - last time I have checked there was a huge shortage on the 2550,
not sure what is the situation right now?

Tamas



On Sat, Nov 6, 2010 at 7:21 PM, Oli Glaser <.....oli.glaserKILLspamspam@spam@talktalk.net> wrote:

{Quote hidden}

>

2010\11\06@153954 by Mark Rages

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On Sat, Nov 6, 2010 at 1:19 PM, Michael Watterson <mikespamKILLspamradioway.org> wrote:
>  On 06/11/2010 17:31, Tamas Rudnai wrote:
>> It is not a new thing. More or less flash disks are using this kind or
>> connector already (see attachment).
>>
>> BTW: I believe this is a soft usb module on that AVR, which is very hard to
>> do on a PIC.
>>
>> Tamas
>>
> Well a PIC18F2550 SMD isn't big and has USB. I've done USB on JAL on the
> PIC18F4550 and powered it + Graphics LCD from the USB.
> But there may be better choice. the JALV2 USB libraries seem easy to use
> on 18Fxxxx and 18FxxJxx that has USB built in.
>
> So no-one have a preference on PIC 18F that has built in USB?
>
> What could you add to make it a more useful gift but still cheap enough
> to give away?
>

Something like the GoodFET but instead a 3.3v, LVP-only pickit 2 clone
instead? (The GoodFET uses relatively more expensive ICs)

(For that matter, a GoodFET port to 18F would be fun to give out to
MSP430 partisans.)

Regards,
Mark
markrages@gmail
-- Mark Rages, Engineer
Midwest Telecine LLC
.....markragesKILLspamspam.....midwesttelecine.com

2010\11\06@164646 by Isaac Marino Bavaresco

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Em 6/11/2010 15:31, Tamas Rudnai escreveu:
> It is not a new thing. More or less flash disks are using this kind or
> connector already (see attachment).
>
> BTW: I believe this is a soft usb module on that AVR, which is very hard to
> do on a PIC.
>
> Tamas

Some years ago, a guy in eastern Europe published an AVR-based USB
design using an AVR *without* USB hardware. It was called IgorUSB, if I
remember it right.

It was capable only of low-speed USB (1.5Mbps) and the AVR was overclocked.


It appears that nobody credits him anymore.


Isaac

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2010\11\06@192401 by William \Chops\ Westfield

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On Nov 6, 2010, at 10:16 AM, Harold Hallikainen wrote:

> The web page on the project is a bit strange.
> Hitting download brings up an ad

That'd be the referral page rather than the web page itself, right?
Looks like a blog I'll avoid.

Hackaday is much better:
  http://hackaday.com/2010/10/29/tiny-usb-business-card/

And the original developer page:
  http://frank.circleofcurrent.com/cache/usbbusinesscard_details.htm


> Does that chip have some USB hardware in it, or is it done in  
> software?


Software.  The AVR is "well known" to be just barely able to fake low- speed USB using software only.

BillW

2010\11\06@194920 by William \Chops\ Westfield

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On Nov 6, 2010, at 1:46 PM, Isaac Marino Bavaresco wrote:

> Some years ago, a guy in eastern Europe published an AVR-based USB
> design using an AVR *without* USB hardware. It was called IgorUSB,  
> if I
> remember it right.

IgorPlug USB.  No overclocking required (well, 12MHz.  I guess there  are AVRs that don't go that fast.)  http://www.cesko.host.sk/

>
> It appears that nobody credits him anymore.

this particular hack credits V-USB (not its first name, IIRC) (http://www.obdev.at/products/vusb/index.html   ), which is apparently a much different implementation (and much  more "professionally" documented.)  Its documentation includes a link  to Igor's page.  I don't know and didn't look for detailed "this was  based on that, etc" history of the concept; it's hard to evaluate the  importance of an initial proof-of-concept for something like this...

Igor has a SW only Ethernet too (sort of.  Transmit only.)  Scary  stuff.  I guess that pre-computing a "blastible" bitstream is a pretty  powerful concept, but not particularly exciting after the first time...

BillW

2010\11\07@154757 by alan.b.pearce

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> That is VERY CLEVER. The use of the card edge as a USB connector is
> something I never thought of.

I have considered it recently, to make a USB dongle from a PIC18F14K50
USB chip. The other trick there is that the USB pins also double as some
of the pins required to program the chip.
-- Scanned by iCritical.

2010\11\07@155134 by alan.b.pearce

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> So no-one have a preference on PIC 18F that has built in USB?

Yeah, the 18F13K50 or 18F14K50. The first would be ideal for a very
simple application like this. It also comes in a very thin package that
would suit this style of application.
-- Scanned by iCritical.

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