Filtering and Temperature

Fourier transform of acquired signal
Learn how to filter a signal in hardware and software then create a digital thermometer. In this project students acquire temperature data using a thermistor and take a Fourier transform of that data. They then implement a physical low-pass filter and a low-pass filter in software and observe the effects of each of these on the signal. Finally, students can take the data acquired from the thermistor to create a digital thermometer displaying temperature.
This is module 4 of 10 in the course set, myDAQ Projects for Engineering Students.


  • DAQExpress workbook


  • Completed code


  • Basic circuit building
  • Basic familiarity with DAQExpress

Related Resources


These labs enable students to apply the skills they learn.


These labs have related concepts that can expand student experience.


Combines a comprehensive set of plug-and-play computer-based lab instruments with portability for hands-on student learning in or outside the lab.


Save time with quick, clear access to DAQ measurements, get instant access to data without the need to program, then apply analysis or program for advanced acquisition, using built-in interactive tools to rapidly make data-driven decisions.

Required Software

  • DAQExpress 1.0

Required Hardware

  • myDAQ - View Specifications
  • NTC 10kΩ thermistor
  • Two 1.5kΩ resistors
  • 0.1μF capacitor
  • 1μF capacitor
  • Breadboard
  • Wires
  • Plastic bag filled with ice or other cold object to measure 


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