[GreenKeys] Feeding ITTY to the teletype; simulating M33/35 teletypes hooked to computers like in the 70s

[Chris Elmquist]

This is very similar to an approach I was considering too although I
wanted to pursue the TTY end running an app that allowed you to access
IRC, GoogleTalk, Jabber, etc. IM services with your 45.45 baud TTY.

We'd write a text only IM client that runs on the embedded Linux device,
giving it an appropriate command character escape mechanism to allow us
to initiate IM connections, join chat groups, disconnect, etc.

The whole thing would be in a small box with ethernet on one side and
current loop on the other.  You plug the ethernet into your home LAN
and connect the current loop to your TTY.

I was thinking of it as an "Internet TU".

Chris N0JCF


On Tuesday (08/28/2012 at 09:45PM -0700), Keelan Lightfoot wrote:
> Paul,
> 
> I've started work on a similar project, but my idea is to cut out the audio middle man. I've written a server in C that handles communication between multiple TTYs over IP, using a ring buffer clocked at 45.45 baud to allow for semi-realistic garble when more than one person is talking at a time. For hardware, I'm using a Lantronix X-Port, which runs Linux. It has a single ethernet port, a serial port and a couple general purpose IO pins.
> 
> I've tweaked the linux kernel on the X-Port to allow me to reduce the baud rate of the serial port to 45.45 baud, I just need to write the client software.
> 
> I've got all the bits and pieces accumulated to build a prototype board with a loop keyer, patiently waiting until my interest cycle swings that way again.
> 
> - Keelan
> 
> On 2012-08-28, at 7:55 PM, Paul Heller wrote:
> 
> > I'm experimenting with something, but it is very early days. There are small computers, the size of an Altoids (the mints) tin. These full fledges computers run linux...
> 
> - snip -
> 
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-- 
Chris Elmquist