The colour sorter
Engineers (Advanced), mission M9 Factory Automation, lesson 4 of 6.
Hook
Red here, blue there. A sensor and a servo can sort faster than you!
Fair test
Code: if red → flip left, else → flip right. Measure sorting accuracy over 20 bricks.
Bonus challenge
Add a third colour. What changes in the code?
The build
Colour Sorter: A conveyor carries bricks past a colour sensor; a servo flipper pushes red bricks one way and blue the other.