I appreciate the offer to help on the project. I don't think I am ready=20 to try a mechanical mod yet. I am using a smaller Logitec trackball on the USB only machine but it is=20 worse than a mouse for me. The aging process is showing me how fortunate I have been to have a=20 sound body for so long. I tried to repair the missing [OT] in the title but it seems to beyond=20 my control. On 1/13/2012 8:12 PM, YES NOPE9 wrote: > I would try to adapt a USB optical mouse ( UOM ) to interface to the trac= kball. Ball must have pattern on it. > The UOM ccd can read the trackball movement. The buttons on the trackba= ll can be fed to the UOM. > I am willing to help. > 99guspuppet > >> On Jan 13, 2012, at 5:30 PM, John Ferrell wrote: >> >> I am one of those people who is dedicated to using a Logitec FX >> Trackball for the pointer on My PC. >> They have been out of production for several years. Even when you find >> one it it will always use a PS2 connector. >> I have a rather complex cluster of machines that implements two KVM >> switches. One of the switches is USB because one of the computers is USB >> only. >> A ps2->usb adapter will not work with the USB KVM. The vendor plainly >> states that. He is correct. Since the PS2->USB adapter is simply a >> passive device that connects the appropriate data pins to the different >> connectors, I think it has to be a timing issue. >> >> My current thinking is to install an USB connector on the trackball and >> try a short USB cable. >> >> Your thoughts and suggestions are welcome. I don't like the try it and >> see technique other than a last resort! >> >> --=20 >> John Ferrell W8CCW >> "The man who complains about the way the >> ball bounces is likely to be the one who dropped it." > --=20 John Ferrell W8CCW "The man who complains about the way the ball bounces is likely to be the one who dropped it." =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .