[GreenKeys] Computer to teletype module...

[E.]

Thanks for all the replies!  I’m going to have to comb through all of these, once I have a pause in getting my base station antenna up (having nice weather right now)…

One thing that I wish I could see - one that I would love to see on the software side, is a application that would take the NWS RSS watch/warning feed for a given county in the U.S., automatically refresh the feed every minute or so and hammer out onto the teletype whenever watch or warning would pop up (typing each only once - based on the unique watch/warning ID and only the text contained within the warning - not the extra RSS stuff).  Bonus points for three bells at the beginning of every message!  Sadly, there aren’t that many apps out there that can do that… and hardly any apps at all for Teletypes.  Too bad most aren’t made for Macs, also…..

(hardly any apps will do an automatic refresh on anything, from what I can tell - I could be wrong… but it would be nice to see an app that allows a Teletype to become a realtime information gathering machine again and not just an “if and when” type of thing~)


> On Feb 17, 2018, at 11:24 pm, epvgk at limpoc.com wrote:
> 
> On Sat, Feb 17, 2018 at 06:21:37PM -0800, John Nagle wrote:
>>   Exactly, My design could easily be made by a PCB assembly shop,
>> but it's not an easy hobbyist project.
>> 
>>   There are no through-hole equivalents for many of the parts
>> in that design.  It has a specialized switching power supply which
>> uses modern switching power supply components. Those just aren't made
>> in through-hole. The layout around the switcher has to have very short
>> lead lengths or it won't work at all.  Having been forced to SMD,
>> I went as far as I could towards all SMD.  Once you're set up to
>> assemble SMD, it's easier to place SMD parts than through-hole parts.
>> 
>>   If there was a market for 100 of those things, it might be
>> worth having them manufactured.  Less than that, not worth it.
> 
> I ended up selling close to that many of mine (at cost, mostly just to
> subsidize getting them built.) I bet there would be a similar sized
> market for yours, especially considering many people have only a single
> teletype and don't need or want to deal with a separate loop supply. 
> 
> For that matter I want to build one of yours, too. The power stuff is
> great and it would make life easier bringing a machine to conferences etc.
>> 
>> which requires an external 120VDC power supply and an external
>> USB to serial converter.  I built and used several of those.
>> But surplus 120VDC power supplies are now hard to find.
> 
> I feel like a compact switching loop supply is another project that might 
> be worth doing for greenkeys...
> 
> 
> eric
> 
> 
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