BrickSorter - Sorting bricks with a HiTechnic Colour Sensor

Friday, April 6th, 2007

What better idea to come up with to test the HiTechnic colour sensor then to build a LEGO brick sorter. So, that’s what I did. After quickly learning that the sensor does not read colour from a distance (in my excitement I forgot to read the documentation), and creating a room navigating robot (see CT1 on my site), I decided to test its brick sorting abilities… Ok, the sensor only has to tell the NXT what colour it sees, the robot has to do the rest. Anyway, for details a video and more pictures, have a look at my site at: www.plastibots.com

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LocoArm: Robot Locomotion on Rails

Friday, April 6th, 2007

A robot that moves on rails can traverse large distances quickly and still reach its destination accurately, because it only needs to navigate a one-dimensional world. In this robot I used Lego train tracks from the RC Trains line, along with a train motor from the same line. The motor is a 9V motor that can be controlled by the NXT using a converter cable. The robot detects stations that have stands for a ball using the light sensor, but it was challenging to stop the robot precisely at the station.

Read all about it and watch a video!

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