Using a PS2 mouse with my Coleco Gemini

[rietveld]

 

 

[rietveld]

I just need to make a small enclosure for the adapter board. The electrical tape looks pretty bad.

[Swami]

Does the Coleco Gemini have the same controller pinout as an Atari 2600?  

 

What did you use for the USB mouse to Atari joystick converter? It looks like a ps/2 to USB converter coupled to a USB mouse to Atari joystick converter.

[rietveld]

33 minutes ago, Swami said:

Does the Coleco Gemini have the same controller pinout as an Atari 2600?  

 

What did you use for the USB mouse to Atari joystick converter? It looks like a ps/2 to USB converter coupled to a USB mouse to Atari joystick converter.

Yes , same pinout as the atari2600 and expansion module for the Colecovision/adam

 

 

https://www.ebay.ie/itm/274204936054

 

 

[rietveld]

Also works great on the Adam with the Atari expansion module

 

 

[NIAD]

So the Atari 2600 DB9 controller ports are wired to provide enough power for the adapters you have connected and mouse unlike the ColecoVision and ADAM?

[rietveld]

1 hour ago, NIAD said:

So the Atari 2600 DB9 controller ports are wired to provide enough power for the adapters you have connected and mouse unlike the ColecoVision and ADAM?

Yes . pin 7 provides a +5v.

 

So you can use a ball mouse or optical mouse

 

Pin 7 on the Colecovision and Adam are not conected to anything so you should be able to pull a +5v and solder it to the joystick port and use the mouse adapter 

 

 

Edited May 10, 2021 by rietveld

[rietveld]

[rietveld]

Atari 2600

 

[doubledown]

I thought I remember reading in an Atari 2600 service manual, that the +5VDC at pin 7 was good for approximately 50mA..safely.  I've used it to power optical joysticks that draw around 35mA with no problems, on both 2600 and 7800 consoles (including the EM#1).  It's mainly used for the Paddle controllers on the 2600, and 3rd party joystick controllers that had an "auto-fire" circuit, made use of this power as well.  

 

Keep in mind too, that while in most Coleco Hand Controllers, the controller cables may only have 7 wires (Pins 1/2/3/4/5/6/8), Pins 7 & 9 are connected at the console's controller port, and are used for quadrature inputs from "spinning/rotational" controls like the EM#2, the Roller Controller, and the Speed Roller on the Super Action Controllers.  

 

Additionally, I believe the Atari 2600 controller port pinout you posted, is incorrect...as Pin #5 is for Paddle B's button, and Pin #9 is for Paddle A's button.  A standard CX-40 joystick controller cable, has only 6 wires (Pins 1/2/3/4/6/8), but at the console port, all of the pins are connected/used.  

[doubledown]

Correction on my post above. ATARI pins 5 and 9 are the paddle pots, their buttons make use of unused digital direction contacts.  But modern hacks and homebrews for the 2600 and 8-bits make use of the pin 5 and 9 paddle lines to allow for a 2nd and 3rd button...via some witchcraft and trickery.  Sorry for the confusion.