Bricktronics Shield Kit – a NXT replacement Board (Arduino-Shield)

Bricktronics Shield Kit :: Wayne and Layne Store.

also see: http://www.wayneandlayne.com/bricktronics/downloads/

Multiplo: Create Your Own Robot by Multiplo LLC — Kickstarter

A system to design and build things in an easy way. Specially Robots. And it’s Open Source.

Multiplo: Create Your Own Robot by Multiplo LLC — Kickstarter.

MINDSENSORS ARDUINO interface

Infos from TheNxtStep (Author: Daniele Benedettelli):
https://i2.wp.com/www.mindsensors.com/images/pagemaster/NXShieldwithUnow300.jpg?resize=300%2C173

MINDSENSORS has designed this shield that will allow Arduino to replace *ehm* to be integrated into the LEGO MINDSTORMS system.

It will have 4 NXT motor ports, 4 NXT sensor ports and several RC servo motor ports. The NXShield will attach to an Arduino Duemilanove or Uno or similar Arduino clones. (Picture shown here with a Duemilanove)
The programming for the NXShield will be on Arduino, using usual Arduino C/C++ programming environment. There will be only one I2C port, so you can use multiple sensors on the bus only if they have different addresses.