[Coco] CoCo 2 Factory Composite Video RE'd

[Zippster]

Yes.  

My guess is they decided to do it that way so they wouldn’t have to change the case.

- Ed


> On Dec 14, 2014, at 7:51 PM, Chad H <chadbh74 at hotmail.com> wrote:
> 
> Ahhhh gotcha.  So the jack on the PCB is the 1/8" 3-conductor one?
> 
> -----Original Message-----
> From: Coco [mailto:coco-bounces at maltedmedia.com] On Behalf Of Zippster
> Sent: Sunday, December 14, 2014 6:32 PM
> To: CoCoList for Color Computer Enthusiasts
> Subject: Re: [Coco] CoCo 2 Factory Composite Video RE'd
> 
> The board handles the audio as well.  The connector jack has 3 conductors, video, audio and ground.
> The cable will have RCA plugs on one end and a 1/8” plug on the other.  You’ll sometimes see these for use with video cameras, etc.  A simple stereo headphone plug to RCA would work as well as you only have 2 signals, monaural sound and composite video.
> 
> It’s the same connector style found on the factory board.
> 
> - Ed
> 
> 
>> On Dec 14, 2014, at 6:17 PM, Chad H <chadbh74 at hotmail.com> wrote:
>> 
>> Hey, im curius, I know my RF on my CoCo 2 provides audio as well..but this is done away with on the mod...so what provides audio?  I dont remember composite video doing that.  I remember using seperaye red/white RCA patches for L/R audio channels when doing this with old VCR's and DVD players.
>> Sent from my Galaxy S4
>> 
>> -------- Original Message --------
>> From: Zippster <zippster278 at gmail.com>
>> Sent: Sunday, December 14, 2014 11:10 AM
>> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
>> Subject: Re: [Coco] CoCo 2 Factory Composite Video RE'd
>> 
>> The color mode on this board is pretty darn good even on a large LCD TV.
>> The B&W mode is super clear on the same TV.
>> 
>> I added a couple of pics of the output on a 46” LCD TV.
>> Of course on a CRT it’s perfect, But this pretty darn good for composite on a big LCD.
>> 
>> Not the best pics, but gives you an idea.
>> 
>> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2 
>> <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2
>>>> 
>> 
>> - Ed
>> 
>> 
>>> On Dec 14, 2014, at 9:39 AM, David Ladd <dladd at realmspire.com> wrote:
>>> 
>>> Zippster, Thank you :D  The HD TV's that my family has and the one I 
>>> personally own the tuners still support analog as well as the ATSC 
>>> digital.  The thing is the green is super over powering and can't 
>>> hardly read the black text lol.  So I figure the composit might be 
>>> better :D  Plus this would allow me to use the Playstation One's 
>>> composit monitor too or a car backup camera display panel :D
>>> --
>>> David Ladd
>>> --
>>> 
>>> 
>>> 
>>> On Sun, Dec 14, 2014 at 9:03 AM, Zippster <zippster278 at gmail.com> wrote:
>>>> Hi David,
>>>> 
>>>> I can definitely do that.  :)
>>>> 
>>>> - Ed
>>>> 
>>>>> On Dec 14, 2014, at 1:24 AM, David Ladd <dladd at realmspire.com> wrote:
>>>>> 
>>>>> You know you should sell these boards for those of us who have 
>>>>> CoCo2's that don't want to build their own :D  I would love to have 
>>>>> a Composit replacement for the RF modulator. :D  *hint hint*
>>>>> 
>>>>> 
>>>>> --
>>>>> David Ladd
>>>>> --
>>>>> 
>>>>> 
>>>>> 
>>>>> On Sat, Dec 13, 2014 at 11:27 PM, Zippster <zippster278 at gmail.com> wrote:
>>>>>> Hi Everybody,
>>>>>> 
>>>>>> I’ve successfully reverse-engineered the factory composite board 
>>>>>> found in a CoCo 2 I purchased on ebay.  This board is a direct replacement for the RF modulator.
>>>>>> It requires no modifications to the case, and uses the channel switch to select B&W or COLOR.
>>>>>> 
>>>>>> It seems to have very good output - I’d say better than the reference circuit from the 6847 data sheet.
>>>>>> It’s a more involved circuit with voltage regulators on-board and is AC coupled.
>>>>>> 
>>>>>> Pics of the factory and re’d prototype can be seen here for those who are interested.
>>>>>> 
>>>>>> <https://sites.google.com/site/thezippsterzone/coco2-composite-boa
>>>>>> rd-2 
>>>>>> <https://sites.google.com/site/thezippsterzone/coco2-composite-boa
>>>>>> rd-2>>
>>>>>> 
>>>>>> 
>>>>>> - Ed
>>>>>> 
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>>>>>> Coco at maltedmedia.com
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>>>>> 
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