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Something I've been working on for a few months...

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Anything is possible, just depends how hard it is to map the video signals and find a suitable replacement LCD, and interface the two. For the PB100 I'm using an FPGA dev board to receive the 11 video signals for 640x400 and pixel-double them to 1280x800, then output to an LVDS encoder

DUDE YOU ACTUALLY HAD ME COVERING MY MOUTH GASPING, HOLY CRAP I was like "neat, Macintosh, am i missing the trick tho?" and then the camera pans over to the mouse and I'm like "okay" and then it pans back to the screen and I'm like "WAIT" and then it just kept escalating from there!!!!! 🤯

A small board sits between the ADB trackball and the logic board which has a USB port that houses a Logitech wireless receiver (but could support any USB mouse). It translates USB mouse HID input to ADB mouse packets. For the mouse scroll wheel, it sends ADB keyboard Page Up and Page Down keys.