USB Optical mouse as motor encoder

[Josuetas]

Hola Rodstar

Well i'm sure you have worked around USB devices a lot more than i have since i just made my first steps, and must surely i am wrong, and you can clear a black hole in my mind but..... USB is not as simple bidirectional comunication as RS232. What i mean is that you might need a USB host controller in order to connect USB devices to it (PC brings one), with PIC micros you can only make devices to be connected since it doesnt have the host controller, so you can't connect a USB mouse to a PIC and expect to receive the data.

On the other hand it would be really usefull to emulate someway the controller behavior with the pic since you can find tons of ideas where a USB device is controlled by a uC. I am just considering USB cameras(cheap), uSB keyboard, MOUSE, USB memory for storage, etc. I had this same question in the USB demo by mister_e asked sometime ago, someone there proposed a small device that could be used to control USB things but it was external and far away from Colombia and Chile .

check this:
http://dataweek.co.za/news.aspx?pklN...lCategoryID=34