Lesson F1.1: Color and Reflected Light

The color sensor can classify colors or report reflected-light intensity. Reflected light is often better for finding the edge of a dark line because the program can compare a number with a tested threshold.

Mount height, room light, surface wear, and sensor angle change the reading. Measure the light and dark surfaces on the real mat, then choose a threshold between those readings.

Official hardware activity

Complete Training Camp 3: Reacting to Lines with the official practice base.

Simulator practice

Use move until reflected light is below 35%. Run from home and watch the reading fall when the sensor reaches the black line.

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Try it in the SPIKE App

Display or record the reflected-light value over white and black areas. Test the chosen threshold three times before using it in a mission route.

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