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Re: Jupiter ACE (again)

Posted: Fri Sep 21, 2018 2:38 pm
by Moggy
Lardo Boffin wrote:
Fri Sep 21, 2018 2:25 pm
I found with the ZX81 and a ZX8-CCB there is variance in results from one TV to the next.
I have a normal resolution old LCD TV that easily produces a perfect picture, an old glass screen TV that normally does, a 37” Sony Bravia that is either perfect or awful and a small LG which is extremely picky.
A picture that is perfect on the other three may be flickery and often has colours showing on the LG. Some zeddys I have never been able to get right on this telly.

You can’t please all of the TVs all of the time!

Agree about the LG's, I have two that are bloody fussy as well. :lol:

Re: Jupiter ACE (again)

Posted: Fri Sep 21, 2018 10:58 pm
by McKlaud
Just played with my Jupiter for a while and no success with composite signal on my Sony TV set. I've tried a various techniques to make the CVBS signal like in the textbooks but my TV ignores it. I can see a very nice and crisp image on my 32" LCD TV and on a very cheap 4.3" LCD from China. So, there is no point for "the Holy Grail quest". Mission accomplished. :geek:

Re: Jupiter ACE (again)

Posted: Wed Oct 24, 2018 6:31 pm
by McKlaud
One thing worth mentioning. I’ve made the twister board for ZX81 RAM packs and printers. Myreplica works fine with the Sinclair’s backpack. :)

Re: Jupiter ACE (again)

Posted: Wed Oct 24, 2018 7:59 pm
by RWAP
Excellent - do you plan on offering these for sale?

Re: Jupiter ACE (again)

Posted: Wed Oct 24, 2018 8:02 pm
by mrtinb
What is the twister board?

Re: Jupiter ACE (again)

Posted: Wed Oct 24, 2018 8:38 pm
by McKlaud
RWAP wrote:
Wed Oct 24, 2018 7:59 pm
Excellent - do you plan on offering these for sale?
To be honest I've been thinking about a small batch that would include following items:
1. Jupiter ACE replica PCB
2. 96K RAMpack PCB
3. Twister Board PCB
4. Keyboard Overlay
5. RF modulator replacement

But the set would be in range of 30-35GBP + P&P. So, I've not decided yet.

Martin: The Twister is a small board that allows to connect to JACE interfaces designed for ZX81. In the past it was called "Trumpcard". See there: https://k1.spdns.de/Vintage/Sinclair/80 ... novonics)/

Re: Jupiter ACE (again)

Posted: Thu Oct 25, 2018 12:13 pm
by msch
cool stuff!
I am interested to buy the 96K RAMpack PCB and the Twister Board PCB - preferably with parts ;)

Re: Jupiter ACE (again)

Posted: Mon Oct 29, 2018 11:37 am
by brozier
McKlaud wrote:
Wed Oct 24, 2018 8:38 pm

But the set would be in range of 30-35GBP + P&P. So, I've not decided yet.
I'd be interested in a set of boards :-)

Julia

Re: Jupiter ACE (again)

Posted: Wed Oct 31, 2018 9:26 pm
by gammaray
Oh hell! I'm in too.

But you have to throw in a case too! Maybe one of these would work.
computer case.jpg
computer case.jpg (14.08 KiB) Viewed 2765 times

Re: Jupiter ACE (again)

Posted: Wed Oct 31, 2018 9:52 pm
by McKlaud
Well, the case for the RAMpack almost finished. :geek: