Search found 14 matches

by r00t
Thu Sep 15, 2016 11:20 pm
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

I am thinking in trying the component mod.

Where I can find an easy one and with a step by step instruction??

It is absolutely mandatory to have solder skills? (then I need to practice first and get a solder and all the corresponding stuff).

thanks.
by r00t
Thu Sep 15, 2016 4:00 am
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

@1024MAK

What I meant is:

I think that the picture I am getting by using this USB adaptor is worst than the picture you get if you plug in the Zeddy to an analog TV set. Or is it the same?
by r00t
Thu Sep 15, 2016 12:27 am
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

The question is the following:

That's the better quality you can get from a VHF/UHF output or I can get better if I play with the capturing hardware or wired or whatever else?

thanks.
by r00t
Wed Sep 14, 2016 7:14 pm
Forum: Hardware
Topic: ZX1541 in action
Replies: 8
Views: 5784

Re: ZX1541 in action

Which kind of monitor connection do you use?

It is composite or S-VIDEO? Is that a LCD monitor?

thanks.
by r00t
Wed Sep 14, 2016 7:04 pm
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

Playing with hue/saturation I was able to get a much better picture.

There is still a colorful flickering around the black color of the fonts which I am not able to get rid of.

Attached is a video.

Please tell me your opinions.
by r00t
Wed Sep 14, 2016 6:20 pm
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

Actually, the image could be much better, it's strange, because sometimes it flashes and for a fraction of a second the image is perfect (white background and very clear characters).

I will try to post images/videos. I think with a small tuning, this device could work perfectly.
by r00t
Wed Sep 14, 2016 6:16 pm
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

Hi again:

I've tested the hardware, and it works, but the image quality is really bad.

Maybe it is a matter of fine tuning?

Actually the background color is dark grey instead of white.

I've tried channel 2 and at freq 55.25 MHz

Any ideas?
by r00t
Wed Sep 07, 2016 3:57 pm
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

@gammaray

I have decided to follow your advise and I got the USB/analog TV hardware.

I'll keep updating.

thanks.
by r00t
Mon Sep 05, 2016 6:33 am
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

@mrtinb

thanks!, they come up with the same idea.

I have just leave the 81 connected for some time and it is hot now, so the AC adaptor looks it is working.
by r00t
Mon Sep 05, 2016 5:35 am
Forum: Hardware
Topic: ZX81 monitor
Replies: 39
Views: 17659

Re: ZX81 monitor

@1024MAK Thanks for the explanation on UHF/VHF signals. Actually I am not sure any of those ZX81's are indeed alive. When I connect them to the wall I hear no noise at all. I was expecting to hear some noise at least from the ac adaptor. There is any way to test if the ZX81 is alive without having a...