Optical Mouse Navigation

[lynca]

I have been performing a experiment to validate optical mouse sensing with off the shelf robotic componets.

My work started with writing a custom PS/2 driver with an HCS12 microcontroller from motorola. Basically using a standard SPI interface I was able to communicate between the mouse successfully.
http://iarc1.ece.utexas.edu/~lynca/m...I_oscopeTests/

the code released is not meant for a PIC but can serve as a guide on implementing communication between a mouse and SPI port.
contact by email for the project which is still under development,
http://iarc1.ece.utexas.edu/~lynca/m...dia/FIRST/src/

My solution was not simple and easily transferable. Therefore I was determined to find something better for the robotic community.
I discovered Al William here near my area who had implemented a much more elegant PS/2 driver on a chip he call PAK XI (earlier version pak6).
http://www.awce.com/pak6.htm

Testing pictures, http://iarc1.ece.utexas.edu/~lynca/m...a/FIRST/PAKXI/

I also tested above, the gp5 with great success, I have misplaced my hyperterm outputs but email and I'll provide picture evidence if requested.
http://www.awce.com/gp5.htm

In all, the drivers can be implemented with any PIC (including RC) but an offboard processor streaming serial port commands of x and y is a very quick solution (GP5 through programming port). I have a Microchip project which does so but the code is messy at the moment, please email me a code request if curious.


thanks for your time,

~Andrew Lynch
for in depth look at PS2 driver for a PIC
http://www.computer-engineering.org/