How to Use a Force Sensor with an Arduino (Lesson #23)

This video tutorial explains how to use a force sensitive resistor with an Arduino to detect pressure. It covers the physical properties of the sensor, its limitations for precise measurements, and how to set up a circuit using a voltage divider. The tutorial includes a demonstration in Tinkercad to simulate sensor behavior and a detailed walkthrough of the Arduino code for reading sensor values. The video concludes with a recap and tips for effective sensor use.

What is the primary function of a force sensitive resistor?

• To measure humidity levels

• To act as a variable resistor when pressed

• To detect changes in light intensity

• To measure temperature changes

Why is a voltage divider necessary when connecting a force sensitive resistor to an Arduino?

• To measure changes in resistance directly

• To stabilize the power supply

• To convert resistance changes into voltage changes

• To increase the current flow

In the Tinkercad demonstration, what happens to the voltage as the force on the sensor increases?

• The voltage decreases

• The voltage remains constant

• The voltage increases

• The voltage fluctuates randomly

What is the purpose of using the analog read command in the Arduino code?

• To initialize the sensor

• To control the power supply

• To convert voltage to a digital value

• To read digital signals

How does the Arduino code decide which LEDs to turn on?

• By detecting sound levels

• By measuring the ambient temperature

• By comparing sensor readings to threshold values

• Based on the time of day

What is the range of values that the Arduino analog read command can output?

• 0 to 255

• 0 to 512

• 0 to 1023

• 0 to 2048

What can be adjusted to affect the range of readings from the force sensor?

• The length of the sensor

• The value of the series resistor

• The type of Arduino board

• The color of the LEDs