[Coco] CoCo 2 Factory Composite Video RE'd

Zippster zippster278 at gmail.com
Sun Jan 4 23:35:42 EST 2015


Hi Chad (and all),

By all means feel free to build and sell whatever you like. :)
This is a hobby for me, and I’m just offering the stuff I come up with to anyone in the group
who may be interested.

I’m going to leave these as through-hole as they’re just about done, and I know there are people 
that prefer through-hole for soldering that may want to put one together.  I’m not sure how much
space would be saved by SMT anyway, as you’re pretty much stuck with the 1372 and electrolytics,
which take up a lot of the room.  You could save about 50% of the space taken by resistors and the 
ceramic caps though.  Plus, I’d like to get them wrapped up and move on to other projects.

I totally agree the CoCo’s need better video options.  With the replacement board for the modulator,
there’s a composite option.  I’m working on better options beyond that for MC6847 based machines
as well.  Component, VGA, maybe even HDMI (overkill, but fun to figure out). I’ve got the ADC with
conversion to 8-bit digital RGB portion just about worked out (will be ordering prototypes soon).  
From there there the video can be converted to the various other standards.

- Ed

  
> On Jan 4, 2015, at 8:45 PM, Chad H <chadbh74 at hotmail.com> wrote:
> 
> I've been studying your work... Impressive!  Soo glad someone is giving some enhanced video to the CoCo 2 :)
> 
> Have you thought about shrinking the A/B models by using SMD components where possible?
> 
> If you like, I could help explore that option..not to step on your toes or anything.  I've thought about following your work and trying to build my own just for the fun and challenge, but even if I did come up with a PCB I wouldn't sell them or anything.. that's your baby.
> 
> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Zippster
> Sent: Sunday, January 04, 2015 2:44 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] CoCo 2 Factory Composite Video RE'd
> 
> Hi everyone,
> 
> I should get the final version of the Type A board back any day.  Then after a quick test I’ll be placing a PCB order to get boards for those that expressed an interest in getting one.
> 
> Progress update on the Type B composite board can be found here…
> 
> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2/prototype-progress <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2/prototype-progress>>
> 
> I have to tweak the PCB layout for fit and final achoring/grounding solution, and then this version will be done too.
> 
> - Ed
> 
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