It’s the latest in instrumentation for the well-appointed shop — an acoustically coupled fast Fourier transform tachometer. Sounds expensive, but it’s really just using a smartphone spectrum ...

This tutorial will guide you through the process of building a tachometer around an Arduino. Tachometers are used to measure rotation rate in Revolutions Per Minute (RPM). You don’t need much in ...

Microsoft and our third-party vendors use cookies to store and access information such as unique IDs to deliver, maintain and improve our services and ads. If you agree, MSN and Microsoft Bing ...