Normally, non-contact tachometers are optically coupled ... You’ll need to know a little about your tooling to get the right RPM, and obviously you’ll be limited by the audio frequency ...

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 ...

The average modern car has a bewildering list of acronyms, and it starts from the moment you sit in the driver's seat. Upon turning the ignition or pushing the start button, a cacophony of ...