[GreenKeys] USB/Teletype Boards Ready to Ship

Fri Sep 6 18:33:31 EDT 2019

Yes, I was wondering if this got confused with the Nagle board, which is a really great and clever design (powers the current loop from USB), but is also somewhat expensive (around $120 or more just in components from what I'm told).

Oh, and a follow up note-- this board I've manufactured DOES require an external current loop power supply. It does not power the loop itself.

-
Jordan Spencer Cunningham
teletype.net

On Fri, Sep 6, 2019, at 4:26 PM, Richard Knoppow wrote:
>  Another poster said he thought these were expensive. If this 
> is the device on the web site linked below I think they are quite 
> cheap. I have a little experience with manufacturing and have 
> some understanding of the costs involved. $35 seems cheap to me. 
> Maybe I am missing something.
> 
> On 9/6/2019 3:14 PM, Jordan Spencer Cunningham wrote:
> > There have been a few questions on this manufacturing venture, so 
> > I'll send more details publicly to hopefully answer most of them, 
> > and then I'll answer anything else privately.
> > 
> > Back in April I started the process of manufacturing a run of 
> > Eric Volpe's USB to TTY interface board. It allows you to connect 
> > a computer to a current loop. It supports 20ma and 60ma loops. 
> > Out of the box it supports ITA2 (5-bit) machines and ASCII 
> > (7-bit) machines, though you could customize some configurations 
> > to do other encodings if needed. It also supports any baud rate 
> > from 45 baud up to at least 1200 baud (these haven't all been 
> > thoroughly tested, but they should work).
> > 
> > Basically it enables your computer to act like a teletype on a 
> > current loop-- sending and receiving text.
> > 
> > It's very versatile; I've loved working with these boards.
> > 
> > I was able to manufacture them for $35 each (including shipping 
> > to the continental U.S.). I still have some available for those 
> > interested. This includes the fully manufactured board 
> > preprogrammed to work out of the box.
> > 
> > More technical details are available at Eric's site here 
> > <https://heepy.net/index.php/USB-teletype>. I am also creating 
> > additional documentation and help videos to supplement this-- a 
> > link will be shared soon.
> > 
> > -
> > Jordan Spencer Cunningham
> > teletype.net <https://teletype.net>
> > 
> > 
> > On Tue, Sep 3, 2019, at 5:02 PM, Jordan Spencer Cunningham wrote:
> >> Hi all,
> >>
> >> Those of you who made orders for these boards should have just 
> >> received a message with details about your USB/TTY interface 
> >> board order. If you didn't, please check your spam and let me 
> >> know if it's not even there-- it seems there may have been a 
> >> few of you whose inboxes somehow ate some of my previous messages.
> >>
> >> In short, I will be shipping boards starting Friday.
> >>
> >> Those of you who didn't make an order but wish you did are also 
> >> in luck-- I currently have 31 boards unclaimed. You're welcome 
> >> to tag along.
> >>
> >> Thanks much, and have a great day.
> >>
> >> -
> >> Jordan Spencer Cunningham
> >> teletype.net <https://teletype.net>
> >>
> >> ______________________________________________________________
> >> GreenKeys mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:GreenKeys at mailman.qth.net
> >>
> >> 2002-to-present greenkeys archive: 
> >> http://mailman.qth.net/pipermail/greenkeys/
> >> 1998-to-2001 greenkeys archive: 
> >> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> >> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: 
> >> http://comcents.com/tty/greenkeyssearch.html
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to js at teletype.net
> > 
> > 
> > ______________________________________________________________
> > GreenKeys mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:GreenKeys at mailman.qth.net
> > 
> > 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
> > 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
> > Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
> > 
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to 1oldlens1 at ix.netcom.com
> > 
> 
> -- 
> Richard Knoppow
> 1oldlens1 at ix.netcom.com
> WB6KBL
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net
> 
> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/
> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html
> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.html
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to js at teletype.net
> 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20190906/1ee762ab/attachment.html>