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Fairlight-CMI

Index last updated: 2026-04-29 00:03 UTC

Message

Re: USB Mouse -> CMI Lightpen adapter

2010-05-27 by mercybox

Holy crispy crap. Count me in for a couple of units as well. Well done, me boy!

Laurence

--- In Fairlight-CMI@yahoogroups.com, "tama_rat" <britt@...> wrote:
>
> Hi all,
> 
> I've been working on an adapter to let me replace/augment the lightpen on my IIx with a USB mouse.  I just uploaded some pics of the adapter in operation.
> 
> It connects in between the CMI and the display, synchronizes with the video coming from the Q219 board, and generates appropriately-timed pulses to emulate the lightpen.
> 
> I use the right mouse button to toggle the cursor on and off.  You can see the cursor in the photos as the little 3 scanline tall spaceship-looking thing.
> 
> You can then use the mouse to freely move the cursor all around the screen, and click with the left mouse button.
> 
> The lightpen (if one is fitted) continues to work, even with the adapter in place.
> 
> I'm thinking about doing a run of them for sale.  I'm not sure what the finished cost will be yet, I need to get better numbers on a couple of things (assembly, enclosure fabrication).
> 
> If you're interested (and/or have advice on the enclosure), please let me know!
> 
> Joe
>

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