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Calibrating a Sensor

Experiment #3 from Vernier Coding Activities with Arduino®: Analog Sensors

Education Level
High School


Vernier sensors utilize natural phenomena to create an electric signal that correlates to a sensor reading. For example, strain gauges are devices that change their electrical resistance depending on how much they are stretched or compressed. You can therefore determine the amount of force being applied by measuring the voltage of the strain gauge.

In the “Using Vernier Sensors with Arduino®“ activity, you started with the sensor reading (the count) from the Arduino and converted that to a voltage. In this activity you will complete the process by creating an equation to convert the voltage to an actual sensor reading.


  • Understand how a sensor works
  • Convert the output of the Arduino into a sensor reading

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

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This experiment is #3 of Vernier Coding Activities with Arduino®: Analog Sensors. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

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Vernier Coding Activities with Arduino