Fan Speed Control Using a Thermistor, LabVIEW, and myRIO

My name is Dharsan: I am a student at WSU as well as one of the new Product Marketing Engineering Interns at Digilent.  I am working with LabVIEW and the NI myRIO to create projects that help teach people how to use LabVIEW.  This week, I’ve been working on a project that controls fan speed based on a temperature reading.  An in-depth description of this can be found on instructables.com here.

 

In the future, I will be working with LabVIEW and the chipKIT WF32 to create more small projects like this.

 

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In this project I created two simple circuits: a voltage divider to measure the voltage change across the thermistor with changes in temperature, and a transistor circuit that switches power to the fan.  Then, using LabVIEW, a myRIO, and a myProto, I created three different fan speeds depending on the thermistor voltage.

 

Please let me know what you think or if you have any questions.

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