Propeller "Motherboard" $20

This is the core of the device. This nice 3"x4" $20 development board come with a Propeller 8x20 MIP processor. It is a multitasking processor. There are lots of prewritten drivers and cheap ($20) headers that allow it to interface keyboard/mouse, TV (rca), VGA, compass, tilt sensors, screens, etc. It also runs from an external crystal so it is comparable to your wristwatch for accuracy. Note: You need a $20 USB->Serial adapter to program it with a modern computer. Propeller Prototype Board