Circuit diagram of the digital distance meter is shown in Fig. 2. It is built around Arduino Uno board, HC-SR04 ultrasonic sensor, Nokia 5110 LCD and 9V battery for power supply. Fig. 2: Circuit ...

This project is a digital distance meter with a car parking siren using an Arduino. It utilizes an ultrasonic sensor to measure distance and provides visual and audio alerts based on the detected ...

This article describes the implementation of a digital frequency meter using Arduino Uno to determine the sinusoidal frequency signal in the range of 20Hz to 5kHz. The logic involves counting the ...

In this tutorial we will make a prototype of a Digital Taxi Fare Meter using Arduino LM-393 Speed Sensor. This project calculates speed and distance travelled by the taxi’s wheel and continuously ...