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Published on Dec 6, 2012
The NXTolaus is a Christmas robot that can be built with a single LEGO® MINDSTORMS NXT 2.0 set.
When roaming around with a closed bag full of presents, it will detect you with its Ultrasonic sensor. In that case, it will stop, speak some Christmas greetings and open its bag. Once you have taken out the presents, the NXTolaus will notice that using a hidden touch sensor at the bottom of the bag; it then closes the bag and "walks" away.