who can shine a light on the hoglet rgd to hdmi converter

Nagging hardware related question? Post here!
Post Reply
techy
Gold Card
Posts: 255
Joined: Thu Sep 06, 2012 6:13 pm
Location: belgium

who can shine a light on the hoglet rgd to hdmi converter

Post by techy »

Hi forum ,

So i got only one thing clear , and that is the 2018-2020 version of the main pcb.

components and pcb ordered.

Now ,..................

What adapter board do i need for ;

zx80/81 with cap modified vid. output
spectrum with cap modified vid. output
spectrum 128 with standard vid. output
QL with standard vid. output

So at least the 3/4 level analog board iss 3

But i can not make any more of the explanation on github


can anyone help me out what else i need here ? .......please


Zx80-1/3k exp.-zx81-16k exp.- Spectrum 48 - Spectrum+ -Spectrum 128- Interface 1 - DIVide - Zx flashcard- Zx printer - Ram turbo - Velleman interface system - Currah microspeech - Ql - Miracle 512k exp.- Ql printer - Cst Qdisk interf.- Qubide - Double 3.5 floppy- Minerva - Ice 1.9 - Ql Usb mouse adapter - Qimi-and much more .
Derek_Stewart
Font of All Knowledge
Posts: 3975
Joined: Mon Dec 20, 2010 11:40 am
Location: Sunny Runcorn, Cheshire, UK

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by Derek_Stewart »

Hi,

Have aa look on the Stardot Forum, where the RGB2HDMI converter was developed, I a sure there will be more information there and maybe someone that has built the Spectrum and ZX80/81


Regards,

Derek
User avatar
ql_freak
Gold Card
Posts: 354
Joined: Sun Jan 18, 2015 1:29 am

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by ql_freak »

Do your really need a converter to HDMI? If it's enough to have a converter so that you can view the output of a QL, here is the thread for a cheap converter (for QL) to VGA:

https://www.qlforum.co.uk/viewtopic.php ... it=pi+pico


http://peter-sulzer.bplaced.net
GERMAN! QL-Download page also available in English: GETLINE$() function, UNIX-like "ls" command, improved DIY-Toolkit function EDLINE$ - All with source. AND a good Python 3 Tutorial (German) for Win/UNIX :-)
User avatar
polka
Trump Card
Posts: 196
Joined: Mon Mar 07, 2011 11:43 am

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by polka »

Some time ago I posted here :
viewtopic.php?p=47660#p47660
a device to convert SCART to HDMI that I bought to display my QL on a TV that had only HDMI input. it's chinese, indeed !
Bye, POLKa


May the FORTH be with you !
POLKa
techy
Gold Card
Posts: 255
Joined: Thu Sep 06, 2012 6:13 pm
Location: belgium

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by techy »

Thanks for all info ,

right now i stop searching , as stardot nor the inventor react to my requests .


Zx80-1/3k exp.-zx81-16k exp.- Spectrum 48 - Spectrum+ -Spectrum 128- Interface 1 - DIVide - Zx flashcard- Zx printer - Ram turbo - Velleman interface system - Currah microspeech - Ql - Miracle 512k exp.- Ql printer - Cst Qdisk interf.- Qubide - Double 3.5 floppy- Minerva - Ice 1.9 - Ql Usb mouse adapter - Qimi-and much more .
Derek_Stewart
Font of All Knowledge
Posts: 3975
Joined: Mon Dec 20, 2010 11:40 am
Location: Sunny Runcorn, Cheshire, UK

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by Derek_Stewart »

polka wrote: Tue Jul 18, 2023 12:05 pm Some time ago I posted here :
viewtopic.php?p=47660#p47660
a device to convert SCART to HDMI that I bought to display my QL on a TV that had only HDMI input. it's chinese, indeed !
Bye, POLKa
Does it display all the QL screen in monitor mode?
Last edited by Derek_Stewart on Thu Mar 07, 2024 12:06 am, edited 1 time in total.


Regards,

Derek
Derek_Stewart
Font of All Knowledge
Posts: 3975
Joined: Mon Dec 20, 2010 11:40 am
Location: Sunny Runcorn, Cheshire, UK

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by Derek_Stewart »

techy wrote: Thu Jul 13, 2023 11:05 am Hi forum ,

So i got only one thing clear , and that is the 2018-2020 version of the main pcb.

components and pcb ordered.

Now ,..................

What adapter board do i need for ;

zx80/81 with cap modified vid. output
spectrum with cap modified vid. output
spectrum 128 with standard vid. output
QL with standard vid. output

So at least the 3/4 level analog board iss 3

But i can not make any more of the explanation on github


can anyone help me out what else i need here ? .......please
Try looking at this page, there is wiring suggestions for most machines:
https://github-wiki-see.page/m/IanSB/RG ... iki/Cables


Regards,

Derek
techy
Gold Card
Posts: 255
Joined: Thu Sep 06, 2012 6:13 pm
Location: belgium

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by techy »

Derek thanks for all answers ,

right now i have a working pi + cpld pcb , i have info on my monitor , BUT ......

i thought i need an interface-pcb to connect my fe. ql to .

but in all text regarding this project it says that the new pcb ( i have ) allows a direct connection , but i can not find any nfo regarding that.

so a little problem there .

got the latest firmware running , but now need to verify my soldering as the firmware does not recognise the cpld :-(
IMG_4791a.JPG


Zx80-1/3k exp.-zx81-16k exp.- Spectrum 48 - Spectrum+ -Spectrum 128- Interface 1 - DIVide - Zx flashcard- Zx printer - Ram turbo - Velleman interface system - Currah microspeech - Ql - Miracle 512k exp.- Ql printer - Cst Qdisk interf.- Qubide - Double 3.5 floppy- Minerva - Ice 1.9 - Ql Usb mouse adapter - Qimi-and much more .
jobdone
Forum Moderator
Posts: 45
Joined: Wed Aug 07, 2019 4:59 am

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by jobdone »

Have you flashed the CPLD? if your CPLD was pre-flashed for testing purposes like some of the ones I purchased , then you may need to cut the Jumpers and use the beta (or was it alpha) version to flash with. Ideally double and triple check your soldering. In regards to what else is needed , just the cable Din Cable from the QL to the hat.


techy
Gold Card
Posts: 255
Joined: Thu Sep 06, 2012 6:13 pm
Location: belgium

Re: who can shine a light on the hoglet rgd to hdmi converter

Post by techy »

too small for my eyes , i can only do that iduring the weekends if my eyes had some rest ( getting older ).

the chip came from a closed reel packaging .


Zx80-1/3k exp.-zx81-16k exp.- Spectrum 48 - Spectrum+ -Spectrum 128- Interface 1 - DIVide - Zx flashcard- Zx printer - Ram turbo - Velleman interface system - Currah microspeech - Ql - Miracle 512k exp.- Ql printer - Cst Qdisk interf.- Qubide - Double 3.5 floppy- Minerva - Ice 1.9 - Ql Usb mouse adapter - Qimi-and much more .
Post Reply