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topshed/Detecting Colour

Created January 11, 2024 15:41
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Detecting Colour
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Detecting Colour
using the colour sensor, you can detect a range of colours and how much light is reflected from an object
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topshed commented Jan 11, 2024 •
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Detecting colours

Add a colour sensor to your robot. If you're building a line following robot, then it needs to be pointing at the floor as shown below.

PXL_20240111_154025584

Otherwise, mount it facing forwards.

Move forward but stop if you're over something red.

Snip20240111_14

Black vs white

Detecting black/white can be trickier, depending on the lighting conditions, and if the black object is quite shiny. This is the most reliable method: the hub will display W if the sensor sees something white, and B if it sees something black.

Snip20240111_15

NEXT: Line following

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