[Coco] SCART to HDMI project.

[CoCo Demus]

Yes, you need to add a XOR TTL combining h-sync and v-sync and you can
disconnect the pin-10 and use it on the RGB connector. the pin-10 is used
only for the cm-8 for a strange detection system, all this undocumented.

On Tue, Jun 13, 2017 at 10:33 AM, Doug Fraser <frase072 at telus.net> wrote:

> That's possible. A good question is where should we get the h-sync and
> v-sync signals from? The project suggests the centre pin from the composite
> video to pin 20 on the scart connector (sync in). Is there a way to combine
> the rgb sync signals to replace the composite sync signal?
> Doug Fraser
>
>
> Sent from my Samsung Galaxy smartphone.
> -------- Original message --------From: CoCo Demus <
> retrocanada76 at gmail.com> Date: 2017-06-13  07:14  (GMT-08:00) To:
> CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> Subject:
> Re: [Coco] SCART to HDMI project.
> For what you are describing: black and white, black stripes looks to me you
> connected coco3 composite video into a scart luma input.
>
> On Mon, Jun 12, 2017 at 11:36 PM, Barry Nelson <
> barry.nelson at amobiledevice.com> wrote:
>
> > > frase072 frase072 at telus.net  <mailto:coco%40maltedmedia.com
> > ?Subject=Re%3A%20%5BCoco%5D%20SCART%20to%20HDMI%20project.&In-Reply-To=%
> > 3Ctqar0lch5fyvl7tt6iq19drr.1497324709423%40email.android.com%3E>
> > > Mon Jun 12 23:31:49 EDT 2017
> > >
> > > Just picked up an SCART to HDMI converter to replace my aging CM-8
> > monitor. After following Barry Nelsons project on hackaday.io I have had
> > partial success with a video image. Partial in that I have a black and
> > white screen and colors are grey scaled and artifacted with vertical
> black
> > lines. I'm not sure what is going on with the signal.  Does anyone that
> has
> > done this project have any insights as to how to make this work?
> > > Doug Fraser.
> > Can you post a picture of the screen? Make sure you connected all the
> > ground wires and that you have 5 volts applied to the 100 ohm resistor.
> > Double check all your wiring and measure the voltage on pin 16. Maybe you
> > got a bad converter, post a photo of the wiring also please, I may be
> able
> > to help more after I see the pictures.
> >
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> >
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