Measure distance to an object by using a laser-based Time-of-Flight sensor. These sensors have a range of up to 2 meters and are pretty accurate.

You could use these for all sorts of things like measuring waterlevel in a container (without getting the sensor wet).

The sensor works by shining a laser onto an object, and timing how long it takes the light to be reflected back to the sensor.

⚡️Other videos in this series:
   • ESP32 + Arduino  
(Everything you need to know about programming the ESP32 by using the Arduino Framework)

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