Arduino for Beginners - 2022 Complete Course - Read the Luminosity from the Photoresistor

The video tutorial explains how to use a photoresistor with an Arduino to measure light intensity. It covers setting up the circuit, reading sensor values, and interpreting the data. The tutorial also discusses testing the sensor in different lighting conditions and defining thresholds for various light levels. Additionally, it demonstrates using the Arduino IDE's serial plotter to visualize data changes.

What function is used to read values from a photoresistor in an Arduino setup?

• digitalWrite

• analogRead

• analogWrite

• digitalRead

What is the range of values that can be read from a photoresistor using analogRead?

• 0 to 65535

• 0 to 4095

• 0 to 1023

• 0 to 255

How does placing a hand over the photoresistor affect the luminosity reading?

• No change in reading

• Decreases the reading

• Fluctuates the reading

• Increases the reading

What tool in the Arduino IDE can be used to visualize changes in sensor values over time?

• Compiler

• Debugger

• Serial Plotter

• Serial Monitor

What is the purpose of defining thresholds when using a photoresistor?

• To increase sensor accuracy

• To calibrate the sensor

• To compare sensor values for triggering actions

• To reduce power consumption