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Arduino & IoT Academy · Lesson

Set a Light Threshold

Decide 'dark enough' to act on a reading.

Raw Numbers Need Meaning

An analog reading like 312 means nothing on its own. A threshold turns that number into a clear decision: dark or bright.

What a Threshold Is

A threshold is a cutoff value. Readings on one side count as dark, and readings on the other count as bright.

All lessons in this course

  1. Read a PIR Motion Sensor
  2. Measure Light with an LDR
  3. Set a Light Threshold
  4. Automatic Night Light
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