I suggest you go with the BasicATOM 24 module of BasicMicro. (in case you want it)
http://www.basicmicro.com/Product.aspx?productID=18&CategoryID=1
You will need a simple board to.
Additional components can be bought a www.robotshop.ca
this one works great, but its pricy:
http://www.robotshop.ca/home/products/robot-parts/sensors/encoder-disks/wheel-encoder-disks.html
http://www.basicmicro.com/Product.aspx?productID=18&CategoryID=1
You will need a simple board to.
Additional components can be bought a www.robotshop.ca
this one works great, but its pricy:
http://www.robotshop.ca/home/products/robot-parts/sensors/encoder-disks/wheel-encoder-disks.html