41f1a623   
   From: jasen@xnet.co.nz   
      
   On 2009-01-21, nickec  wrote:   
   > I have made a simple tachometer using old roller ball mouse parts.  I   
   > record the output using a soundcard.  Works well.   
   >   
   > What I want to do now is print a ribbon, attach it to the rim of a   
   > disk, and point a laser mouse at the vertical lines running around the   
   > rim.   
   >   
   > Basically I hope to sample the speed of the disk as often as   
   > practical.   
   >   
   > I have been thus far stymied in finding out about the data stream of   
   > the mouse - both inside the mouse (DSP chip), and external to the   
   > mouse (USB).   
   >   
   > Anybody got any ideas?   
      
   you could look up the HID standard, or you could get a PS/2 compatable   
   mouse, which has a much simpler data stream.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)