HC-SR04 Ultrasonic Sensor

Interfacing HC-SR04 Ultrasonic Sensor with PIC Microcontroller

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 supply TRIG and ECHO pins can be used to interface this module with a [...]

Ultrasonic Distance Sensor

Interfacing Ultrasonic Distance Sensor : ASCII Output with PIC Microcontroller

In some of our projects, we may want to measure the distance of an object from a point. Ultrasonic Distance Sensors are the best sensor which provides stable, accurate, precise, non-contact distance measurements from 2cm to 4m. Ultrasonic Sensors can be used to measure distance between moving or stationary objects. Being very accurate and stable, these devices find large number of applications in robotics fields. For example it can be used as an excellent replacement for IR sensors in  a Micromouse. [...]

Ultrasonic Distance Sensor

Ultrasonic Sensors

Ultrasonic Sensors are widely used for non-contact  proximity, presence and distance measuring applications. These devices work on a similar principle of sonar or radar which evaluates the target by interpreting the echo from sound or radio waves. It emits a short high frequency sound waves and evaluates echo which is reflected back from the target. Sensors uses the time interval between sending the sound waves and receiving the echo to determine the distance of target. Most of the ultrasonic sensors are equipped with temperature compensation circuit to [...]