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

[John Foust]

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 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