[GreenKeys] printing to KSR 28 was Re: OT: Radio Shack near bankruptcy

[epvgk at limpoc.com]

On Fri, Nov 14, 2014 at 07:23:14PM -0600, John Foust wrote:
> At 09:49 AM 11/7/2014, Kevin H. Phillips wrote:
> >Didn't someone on the list develop a RS-232-to-loop converter circuit and board?  What about the "Black Box" converters that occasionally turn up on auction sites?
> 
> This is a frequently-asked-question, no?
> 
> I've been meaning to acquire one for my Model 28 KSR and ASR-33.

I wonder if this would be a good candidate for another greenkeys board project. 
Maybe a small USB-to-loop adapter? Or do most people prefer RS232? 

> 
> I would think you couldn't go wrong with the Black Box ones.  I see 
> one on eBay now for $65 BIN and are still for sale new at $270.  
> It can be config'd to 20-, 30- and 60 mA, and has optical isolation 
> on receive.  It's RS-232.  I'd also need a good USB to RS-232 adapter 
> that could handle the necessary low speeds and 5 bits.
> 
> I tried to look on 45baud.net for a project previously mentioned here
> but it looks like it's suffering PHP errors.
> 
> I guess this means I need to get a Model 15 at some point, just
> to go back another twenty years.
> 
> - John
> 
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