Searching \ for '[EE] Cheapest USB to serial solution::' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/io/serials.htm?key=serial
Search entire site for: 'Cheapest USB to serial solution::'.

Exact match. Not showing close matches.
PICList Thread
'[EE] Cheapest USB to serial solution::'
2007\08\28@210553 by Russell McMahon

face
flavicon
face
I'm looking for the cheapest possible way to implement a PC to "RS232"
serial link.
End product would ideally appear to the PC as a serial port with
standard drivers, but needing drivers is permissible if necessary.

Data speed is subservient to lowest cost.

Output to drive a dumb serial port.

Best candidate so far appears to be something like the AVR309
implementation using an ATtiny2313.
Processor, crystal, regulator, 3Cs, 1R, connector.

       http://atmel.com/dyn/resources/prod_documents/doc2556.pdf

Any advance on that or comments?


Extra credit:

Implement a USB to Parallel port converter.

2007\08\28@230534 by alan smith

picon face
I bought a USB to parallel convertor off ebay.....dunno whats inside it tho

Russell McMahon <spam_OUTapptechTakeThisOuTspamparadise.net.nz> wrote:  I'm looking for the cheapest possible way to implement a PC to "RS232"
serial link.
End product would ideally appear to the PC as a serial port with
standard drivers, but needing drivers is permissible if necessary.

Data speed is subservient to lowest cost.

Output to drive a dumb serial port.

Best candidate so far appears to be something like the AVR309
implementation using an ATtiny2313.
Processor, crystal, regulator, 3Cs, 1R, connector.

http://atmel.com/dyn/resources/prod_documents/doc2556.pdf

Any advance on that or comments?


Extra credit:

Implement a USB to Parallel port converter.

2007\08\28@232310 by alan smith

picon face
Not to hijack this..but it is along the same lines....
 
 Whats the easier way to do a USB connection from a PIC
 
 FTDI or one of the new 18F series with the built in USB?  Its more short on time than $$ so not looking at the cheapest....ok I am...but the simplest

Russell McMahon <.....apptechKILLspamspam@spam@paradise.net.nz> wrote:
 I'm looking for the cheapest possible way to implement a PC to "RS232"
serial link.
End product would ideally appear to the PC as a serial port with
standard drivers, but needing drivers is permissible if necessary.

Data speed is subservient to lowest cost.

Output to drive a dumb serial port.

Best candidate so far appears to be something like the AVR309
implementation using an ATtiny2313.
Processor, crystal, regulator, 3Cs, 1R, connector.

http://atmel.com/dyn/resources/prod_documents/doc2556.pdf

Any advance on that or comments?


Extra credit:

Implement a USB to Parallel port converter.

2007\08\28@235551 by Jinx

face picon face

>   Whats the easier way to do a USB connection from a PIC
>    
>   FTDI or one of the new 18F series with the built in USB?

For input (PICs are slaves only). For output as host add something
like a Vinculum

http://www.vinculum.com/prd_vnc1l.html

2007\08\29@001006 by William \Chops\ Westfield

face picon face

On Aug 28, 2007, at 6:05 PM, Russell McMahon wrote:

> I'm looking for the cheapest possible way to implement a
> PC to "RS232" serial link.

Do you need something that can be mounted on a board, or
something like a cable?  And "real rs232" or TTL level?

There are cheap chinese imports for less than $4:
   http://www.dealextreme.com/details.dx/sku.5859
They have parallel cables too; a bit more expensive.
I have no idea how well they work.  DealExtreme has a
pretty good reputation on CandlePowerForums.  For LEDs
and flashlights, anyway...

BillW

2007\08\29@075317 by Russell McMahon

face
flavicon
face
>> I'm looking for the cheapest possible way to implement a
>> PC to "RS232" serial link.

> Do you need something that can be mounted on a board, or
> something like a cable?  And "real rs232" or TTL level?

Board level is OK.
TTL level is actually preferred.

Needs a USB cable or USB socket for connection - either OK if cheap
enough.

> There are cheap chinese imports for less than $4:
>    http://www.dealextreme.com/details.dx/sku.5859

Look good.
That's approaching an acceptable price. Less would be good (of
course).

The AVR solution is arguably competitive with that. Depends on overall
"system integration" factors.



       Russell

2007\08\29@075651 by Gerhard Fiedler

picon face
On 2007-08-29 01:09:46, William "Chops" Westfield wrote:

>> I'm looking for the cheapest possible way to implement a
>> PC to "RS232" serial link.
>
> Do you need something that can be mounted on a board, or
> something like a cable?  And "real rs232" or TTL level?
>
> There are cheap chinese imports for less than $4:
>     http://www.dealextreme.com/details.dx/sku.5859

They also have USB to PS/2 plugs for a bit over a dollar. Not actually
RS232, but still serial :)

Gerhard

2007\08\29@082548 by Chris Smolinski

flavicon
face
>On 2007-08-29 01:09:46, William "Chops" Westfield wrote:
>
>>>  I'm looking for the cheapest possible way to implement a
>>>  PC to "RS232" serial link.
>>
>>  Do you need something that can be mounted on a board, or
>>  something like a cable?  And "real rs232" or TTL level?
>>
>>  There are cheap chinese imports for less than $4:
>  >     http://www.dealextreme.com/details.dx/sku.5859

Anyone know what chipset/drivers they use? (Yes, I'm still looking
for another source for FTDI based adapters)

--

---
Chris Smolinski
Black Cat Systems
http://www.blackcatsystems.com

2007\08\29@084939 by wouter van ooijen

face picon face
> They also have USB to PS/2 plugs for a bit over a dollar. Not
> actually RS232, but still serial :)

You'd have to check whether those are actual converters (work with any
PS/2 compatible mouse) or just two plugs wired together (works with any
dual mode PS/2+USB mouse). The fact that they don't advertise it for use
with a PS/2 keyboard supports the first.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu



2007\08\29@085452 by Xiaofan Chen

face picon face
On 8/29/07, Russell McMahon <apptechspamKILLspamparadise.net.nz> wrote:
>
> The AVR solution is arguably competitive with that. Depends on overall
> "system integration" factors.
>

It is said that the AVR based solution is not really compliant to
USB specification....

2007\08\30@044223 by Alan B. Pearce

face picon face
>>   Whats the easier way to do a USB connection from a PIC
>>
>>   FTDI or one of the new 18F series with the built in USB?
>
>For input (PICs are slaves only). For output as host add
>something like a Vinculum
>
> http://www.vinculum.com/prd_vnc1l.html

I had a look around the website, but cannot see any means of developing
software for this chip.

It would appear to be only possible to use the pre-assembled/compiled
modules that they provide. No data on the chip instruction set or any sign
of software development tools.

Does anyone have any actual experience of developing a project for these?

2007\08\30@050555 by Jinx

face picon face

> > http://www.vinculum.com/prd_vnc1l.html

> Does anyone have any actual experience of developing a
> project for these?

I have one out-of-the-box and on a PCB as an interface for an
18F4550 but regret to say I've yet to get to that part of the project
(probably should do, as the client keeps nagging me, but the USB
is not the primary function of the board and I'd rather get that up
and running properly first)

One other PIC lister at least is using them (I'll let him put his hand
up). The one he's using has audio s/w in it

2007\08\30@054550 by Alan B. Pearce

face picon face
>I have one out-of-the-box and on a PCB as an
>interface for an 18F4550

So I take it you are just using the standard software they already supply.

>One other PIC lister at least is using them (I'll let
>him put his hand up). The one he's using has audio s/w in it

So again that is the standard software they supply ?

It seems to me that these can only be used if your application suits the
modules that they have already available. I cannot find any mention of any
form of software development environment for these things.

2007\08\30@065348 by Mike Harrison

flavicon
face
On Thu, 30 Aug 2007 10:39:44 +0100, you wrote:

>>I have one out-of-the-box and on a PCB as an
>>interface for an 18F4550
>
>So I take it you are just using the standard software they already supply.
>
>>One other PIC lister at least is using them (I'll let
>>him put his hand up). The one he's using has audio s/w in it
>
>So again that is the standard software they supply ?

Yes - that is one of them - I'm using their VMUSIC module as an easily controllable MP3 player.

>It seems to me that these can only be used if your application suits the
>modules that they have already available. I cannot find any mention of any
>form of software development environment for these things.

They have fairly recently released a few new firmware versions for different functionality -
I am fairly sure I've seen mention of them providing a way for users to develop their own firmware
due in the not too distant future.

2007\08\30@073226 by wouter van ooijen

face picon face
> I am fairly sure I've seen mention of them providing a way
> for users to develop their own firmware due in the not too
> distant future.

that would be interesting! any reference?

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu



2007\08\30@080012 by Alan B. Pearce

face picon face
>They have fairly recently released a few new firmware versions
>for different functionality - I am fairly sure I've seen mention
>of them providing a way for users to develop their own firmware
>due in the not too distant future.

OK, I didn't go trolling through the news releases, so it could be coming
'Real Soon Now' ...


Won't hold my breath then .. ;)

2007\08\30@081927 by Jinx

face picon face
> OK, I didn't go trolling through the news releases, so it could be
> coming 'Real Soon Now' ...

Plenty to read here. Just for curiosity if nothing else. Includes App
Notes on bootloaders etc

http://www.vinculum.com/documents.html

I've barely scratched the surface with the Vinculum, being an afore-
mentioned distraction to the real task. But one of these days I'll have
to wander/wade through a lot of this documentation

2007\08\30@092026 by wouter van ooijen

face picon face
> Plenty to read here. Just for curiosity if nothing else.
> Includes App Notes on bootloaders etc
> http://www.vinculum.com/documents.html
> I've barely scratched the surface with the Vinculum,
> being an afore- mentioned distraction to the real task.
> But one of these days I'll have to wander/wade through a lot of this
documentation

Plenty documents, but as far as I see nothing on creating customer
firmware.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu



2007\08\30@125536 by Marcel Duchamp

picon face
Alan B. Pearce wrote:

> I had a look around the website, but cannot see any means of developing
> software for this chip.
>
> It would appear to be only possible to use the pre-assembled/compiled
> modules that they provide. No data on the chip instruction set or any sign
> of software development tools.
>
> Does anyone have any actual experience of developing a project for these?
>

Found somewhere on the net around last May:

//quote:
Q: How do I put my own firmware into the VNC1L?
A: At the moment, the firmware is limited to the libraries we provide.
Development tools to enable you to create your own firmware are expected
to be released in 2007.


Q: What firmware is provided with the VNC1L?
A: The chip is provided blank.

unquote//

I have no idea what value blank chips would be based on those two items.
 My version is the VMUSIC2 with the MP3 decoder chip.  The vinculum
firmware has functionality to allow accessing files on a USB disk
plugged in.  Right now, mine is packed up for an upcoming move; I hope
to do more with it in a few months.

More... (looser matching)
- Last day of these posts
- In 2007 , 2008 only
- Today
- New search...