[Coco] CoCo 2 Factory Composite Video RE'd

[Didier Derny]

I'm interested by 2  kits    (I have some Mc1372)

--
didier


On 15/12/2014 01:32, Zippster wrote:
> 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-board-2 <https://sites.google.com/site/thezippsterzone/coco2-composite-board-2>>
>>>>>>
>>>>>>
>>>>>> - Ed
>>>>>>
>>>>>> --
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