Total Robots - Several accessories for use with OOPic, including:

• *New* Servo Expansion Module (DS-SXM16S) - Designed to make it easy (particularly for those who don't want to fiddle with electronics) to connect servos to an OOPic.
• RS232 Kit - This simple to assemble kit comprises Total Robots' high quality IM printed circuit board, all the components required to construct the RS232 interface, and a set of full color assembly instructions.
• Wireless Control Module - The WCM is a complete wireless control solution for the OOPic microcontroller.
• Interface Module - The Interface Module (IM) was developed to provide a real world interface to the OOPic embedded control module.

...And many more!

• Motor Driver Modules  -  Plug and Play controllers allows independent control of two DC motors, Lamps, Solenoids or other DC loads up to 55 volts and 3 amps each.  Has Joystick interface and "Pass-Thru" data port to allow other pieces of hardware to connect to the OOPic.  Works with OOPic, OOPic II, OOPic II Plus and "OOPic R with proper cable"
• Logic Status Indicator Module  - "Plug and Play" display board allows simultaneous display of all 31 I/O lines for use in software or hardware debugging and development.  Has "Pass-Thru" data port to allow connection between OOPic and any other hardware.  Works with OOPic, OOPic II, OOPic II Plus, and OOPic C.
• Network Cables - For connecting multiple OOPics together for expanded operation.
• Interface Cables - For connecting OOPics to hardware.
• More "Plug and Play" devices on the way