Richard Wall: Using chipKIT Pro and DC Motors

It may have been a few weeks, but we’re back with the final chapter in Richard Wall’s chipKIT Pro series. The last project focused on using the chipKIT Pro MX7 to control a DC motor. This project expands on that by teaching how to determine the speed of a DC motor by measuring frequency.

Frequency measurement resolution for  a fixed clock frequency.
Frequency measurement resolution for a fixed clock frequency.

The purpose of this project is to use the PIC32 input capture to measure frequency. Using frequency measurement will allow us to determine the speed of a DC motor. Determining the frequency is done by period measurement. The way this project handles frequency measurement has the advantage of higher signal-to-noise ratio and reduces sensitivity to circuit impedance. This project and the previous must be done in order.

 

You’ll end up using the PmodCLP parallel character LCD and the PmodHB5, so make sure you check them out. Comment here or on the Digilent Forum to let us know about any issues, concerns, or ideas you had regarding this project.

 

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About Amber Mear

I was the Digilent blog editor, and now I'm a contributor. I love learning about wearables and writing about social issues in STEM. Outside of work, I can be found watching Netflix with my cat, working on an art project, or trying to find new, delicious local foods.

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