[Coco] CoCo 3 RGB to SCART video, then converted to HDMI

[Bill Pierce]

Pictures please.... This may be the easiest (and cheapest) way to do this.

Include each and every part of the setup in the pictures, or we won't believe you :-P

 

 


Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Contributor, Co-Editor for CocoPedia
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E-Mail: ooogalapasooo at aol.com


 

 

-----Original Message-----
From: Barry Nelson <barry.nelson at amobiledevice.com>
To: coco <coco at maltedmedia.com>
Sent: Thu, Apr 30, 2015 1:13 am
Subject: [Coco] CoCo 3 RGB to SCART video, then converted to HDMI


I have conducted an experiment and it worked! I wired the CoCo 3's RGB video
lines from the connector on the bottom of the computer to the RGB lines in an
SCART connector. I connected the audio from the CoCo connector to the left and
right audio on the SCART connector. I connected the CoCo 3's composite video to
the composite video/sync on the SCART connector and I connected +5V to a 100 ohm
resistor connected to the "fast switching" pin on the SCART connector. I then
plugged the SCART video connector into my SCART --> HDMI converter, which I
plugged into my TV. Viola! Perfect RGB video up scaled to 1080P.

Wiring
CoCo
monitor out pins 1 + 2, ground, to SCART pins 4, 5, 9, 13, 17, and 18
CoCo
monitor out pin 3, red video, to SCART pin 15
CoCo monitor out pin 4, green
video, to SCART pin 11
CoCo monitor out pin 5, blue video, to SCART pin 7
CoCo
monitor out pin 7, audio, to SCART pins 2 and 6
CoCo composite video out center
wire to SCART pin 20 composite/sync
+5V connected to a 100 ohm resistor to SCART
pin 16

I used this SCART to HDMI converter for
$44.90

http://www.ebay.com/itm/310620740857?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

And
this SCART connector for $4.58 plus $3.06 shipping,
$7.64.

http://www.ebay.com/itm/391025894062?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Plus
one 100 ohm resistor, an old 10 pin header connector that I grabbed off an old
dead IBM rs232 card, an RCA plug, some wire and an old cell phone charger to
supply the +5V. You could also get +5V from the CoCo's joystick port but I
didn't want to open my joysticks or my CoCo.


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