[Coco] SCART to HDMI project.

Doug Fraser frase072 at telus.net
Tue Jun 13 13:33:26 EDT 2017


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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