The aim of this sorter was to demonstrate the functionality of a homebrew color sensor, based on the instructions in the “Extreme NXT” book. I have the first edition of the (excellent) book, but the second improved version also has instructions for this color sensor. Below you’ll see the resulting sensor. Three colored LEDs are independently controlled by the NXT. A CdS cell reads reflected light intensity and the NXT calculates a color from the measured RGB values.
Other brick sorters in this series:
Every time I created a new brick sorter, I tried to tackle a new design challenge. This improvement would make the robot more functional, more reliable, or both. Follow the links below, and read the pages in order to learn about my findings in the design process.
- Brick sorter #1: July 2006 (original design; 3 colors, 1 size)
- Brick sorter #2: December 2006 (3 colors, 2 sizes)
- Brick sorter 8527 (#3): March 2007 (NXT 1.0 only, 3 colors, 1 size)
- Brick sorter #4: July 2007 (5 colors, 2 size)
- Brick sorter #5: May 2008 (Custom color sensor, 6 colors, 1 size)
- Hybrid Brick Sorter (#6): June 2009 (NXT 2.0 Only, up to 6 colors, 1 size)
