Another colleague here has just bought one of these optical intellimouses (?) and he is using it via the PS/2 adapter. That sounds muchly like the way to go because many people have already published PS2 Mouse code. Olin Lathrop on 15/06/2001 06:52:07 am Please respond to pic microcontroller discussion list To: PICLIST@MITVMA.MIT.EDU cc: (bcc: Drew AMES/SGIOGRP) Subject: Re: [PIC]: PIC as USB Master? > > serial - 1 unit > > PS/2 - 5 units > > USB - 200+ units > All of the dead ends I have been running into made me suspect this. But > the Microsoft Intellimouse, looking through a relay lens is real good a > tracking concrete. I will turn my efforts to extracting the tracking > signal from the mouse before if gets to the USB interface chip. The Intellimouse is also available with PS-2 interface. I'm using one right now. Bob is right, doing a USB root controller is ***not trivial***. All the low cost USB chips are meant for end devices. Implementing a root controller requires a *lot* of software. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body ********************************************************************** This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the sender. This footnote also confirms that this email message has been swept by MAILsweeper for the presence of computer viruses. ********************************************************************** -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body