How to connect LEGO Mindstorms NXT Ultrasonic Sensor to the Arduino.
Thanks to Kristian Lauszus from Denmark it finally works.
Note: Sensor will work also with +9V connected to +5V but with smaller range.
Software and description is available from: http://blog.tkjelectronics.dk/2011/10/nxt-shield-ver2/
Note: You will need modified i2cmaster library available from here.
Uploading the demo program You should obtain results like this:
V1.0 LEGO Sonar 10E-2m 22 19 19 20 Error Reading Distance 21 19 20