Embedded microcontroller or microprocessor projects, circuit diagram and working explanation for students. Can be used as college projects or educational purposes also.
HC-SR04 Ultrasonic Distance Sensor is a popular and low cost solution for non-contact distance measurement function. It is able to measure distances from 2cm to 400cm with an accuracy of about 3mm. This module includes ultrasonic transmitter, ultrasonic receiver and its control circuit. HC-SR04 module has 4 pins :VCC – 5V, +ive of the power supply TRIG – Trigger Pin ECHO – Echo Pin GND – -ive of the power supplyTRIG and ECHO pins can be used to interface this module with a microcontroller unit. These are [...]