The purpose of this tool is to measure any rotation speed with the same accuracy as a commercial product, it can also blink at afrequency defined by the user to match the roatation of anything up to ...

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 ...

Serial.print("010C\r"); // Send the "01 0C" command to the OBD-II adapter // Wait for a response from the OBD-II adapter delay(100); // Wait for 100 milliseconds to allow the OBD-II adapter to respond ...