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Build A Digital Tachometer/RPM Counter

Posted January 27, 2011 by Chris

The tachometer is not a new invention, but being able to build a digital tachometer in less than an hour by yourself shows you how far technology has come. This tutorial guides you through the process of building your own PIC based rpm counter!

11 Responses to “Build A Digital Tachometer/RPM Counter”

  1. nicolas salas Says:

    hi i am very interested in this draft fan RPM for my tank because I have thermometer but when you turn the air conditioning and the fan is fixed speed cooling me a lot of water and I would like to reduce the returns of fan

  2. Augusto Brillantes Says:

    Hi dear I want the tachometer to switch ON a relay at a certain speed limits. example: 17,000-17,500 RPM and OFF the relay upon reaching 17,500.

  3. backpack bags Says:

    This device uses a reflective target. If, however, the handle was large sufficient that you could connect the reflective tape in such a method that it moved in and out of the board of the tachometer as it rotated, it might work.

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