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How to connect LEGO Mindstorms NXT Ultrasonic Sensor to the Arduino.
Thanks to Kristian Lauszus from Denmark it finally works.
Schematic diagram:
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