Circuit Diagram and Connections. Circuit diagram for this Analog Speedometer is simple, here we have used 16x2 LCD to show speed in digital form and stepper motor to rotate the analog speedometer ...

Digital tachometers are widely used in various industries to measure the speed of rotating machinery accurately. This project aims to create a cost-effective and efficient digital tachometer using ...

Interfacing IR Sensor Module with Arduino. Build Time: 2-4 hours. | Cost: $5-10. | Difficulty: suitable for beginners. What You'll Learn: You will learn to handle digital input/output, interface an IR ...

Circuit and working. The circuit diagram of the Arduino-based tachometer is shown in Fig. 1. It is built around Arduino Uno board (Board1), inductive pnp-type normally-open (NO) proximity sensor, a ...

This program basically monitors the IR sensor's value constantly and with the highest priority using Interrupts. The Arduino Uno has 3 interrupts and the Interrupt 0 is pin 2 on the arduino. This line ...