Are the quadtari schematics available somewhere?

[nobru]

Hi,
I am looking for quadtari schematics.
I would like to make a 2 port version for a double joystick (robotwar).
That is to say a 1/2 quadtari.
The savekey will remain on the player 2 port of the console.
I have some of the plans with the video of the KIT assembly.
There are 4 cd4053 and 2 resistors. The copper is clearly visible on video. 

If the diagram is available, please share it.
If not, I will make some prototypes with the identified information.

Thanks in advance.

nobru

 

Edited October 7 by nobru

[nobru]

Hi,
I didn't get much help on this project.
But here is the prototype of the 1/2 quadtari or doubletari.
I redid a little schematic of the project by simplifying the quadtari (thanks to the authors for this fabulous product).
The goal is to connect only 2 joysticks and 1 Savekey to play champ games like the excellent Robotwar.
Combined with a wireless PS4 controller and an ESP32 (rosetta or otherwise), it's wonderful.

All that remains is to make a beautiful 3D case to finish this project.
I am attaching some photos and schematics.

 

see you soon

nobru

doubletari 2600.pdf

Edited October 19 by nobru

[Prizrak]

I've often wanted a quadtari just so I could use the savekey and two joysticks. This is the best of both worlds, awesome project

[Bomberman94]

The only thing that put me off buying it was that the paddles don't work with it 

[nobru]

Good evening,
In fact the authors of Qatari used pin 9 and a bit of software to synchronize the 2 joysticks.
 Pin 9 is also used for the paddle, therefore incompatible.
I also wanted combined with the 2 buttons version but it also uses pin 9.
So for paddle and 2 buttons games they will have to remove the quadtari.

[Thomas Jentzsch]

I think one paddle will work.

[Bomberman94]

34 minutes ago, Thomas Jentzsch said:

I think one paddle will work.

And does (one will be enough each) the driving controller and trackball work, too?

[nobru]

Hi,
On my project this will not work.
I did not wire pin9 and 5 of the output joysticks/paddles.
I think it's the same on the real quadtari.
Between pin 9 and 7, there is a resistor which manages the quadtari. 
The paddles also have a variable resistance in pin 9 and pin7 which makes the quadtari unstable and non-functional.

[Thomas Jentzsch]

2 hours ago, Bomberman94 said:

And does (one will be enough each) the driving controller and trackball work, too?

Should be not problem. Though two trackballs per port will required some hefty compromises.

[Thomas Jentzsch]

1 hour ago, nobru said:

Hi,
On my project this will not work.
I did not wire pin9 and 5 of the output joysticks/paddles.
I think it's the same on the real quadtari.
Between pin 9 and 7, there is a resistor which manages the quadtari. 
The paddles also have a variable resistance in pin 9 and pin7 which makes the quadtari unstable and non-functional.

You are the hardware guy.