Hello! in this video I show you the easiest way to measure RPM of motor. All you need is tape and microphone! And Audacity.


yes, video is not available but, if i did understand, it s a clever way.<br>for those that didn't t get:<br><br>you should run the motor with the tape in the axis and partially hit the tape with something for some time (5-10 sec) recording the noise with some audio analyzer software.<br>then, in the software you just count how many noise spikes there are in a time space and adjust the math for one minute (ex. 100 spikes in 2 seconds = 3000 rpm).<br><br>great idea but you should improve your instructables

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Bio: I like to create things, handmade weapon, arduino projects, science and some crazy staff! Also I like to capturing videos about my projects and I ... More »
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