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 ...

This project brings your car's engine to life with a real-time RPM display on a 7-segment display using an Arduino Uno and a SparkFun UART board. Take it for a spin and see your engine roar to life ...

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 ...

A tachometer measures the rotation speed of motors and other machinery. There are various types of tachometers. Described here is a digital non-contact type tachometer using a proximity sensor. The ...

A tachometer used to be an accessory added to the dash of only the sportiest of cars, but now they’re pretty much standard equipment on everything from sleek coupes to the family truckster. If your ...

Hello everyone! Today I’m going to discuss a cheap type of useful digital rotation per minute counter (Digital RPM Counter). The 4-Digit LED Display RPM comes with a magnetic proximity sensor switch.