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What can you do with hc-sr04 ultrasonic sensor?
Written by Benne de Bakker 23 Comments. The HC-SR04 is an inexpensive, easy to use ultrasonic distance sensor, with a range of 2 to 400 cm. It is commonly used in obstacle avoiding robots and automation projects. In this tutorial, you will learn how the sensor works and how to use it with Arduino.
How to use only one pin of hc-sr04?
The HC-SR04 sensor uses one pin for Trigger and one for Echo. So you need to use two pins of your microcontroller to measure the distance detected by the sensor. In this tutorial, you can find how to use only one pin of the HC-SR04 to calculate the distance detected by the sensor.
How big is the path of the hc-sr04?
The HC-SR04 barely works to 10 feet giving a total path length of 20 feet and a path time of about 20ms so set the timeout to something above that, say 25 or 30ms. If you put a resistor, say 2k2 between E and T then only connect to T you can use the HC-SR04 from just one Arduino pin.
What can I do with an ultrasound sensor?
The HC-SR04 is a very pop u lar ultrasound sensor usually used in hobby electronics to build cheap distance sensors for obstacle avoidance or object detection. It has an ultrasound transmitter and receptor used to measure the time-of-flight of an ultrasonic wave signal bouncing against a solid object.
How many pins are in the hc-sr04 sensor?
It gives precise measurement details and comes with accuracy (resolution) around 3mm, terming there might be a slight difference in the calculated distance from the object and the actual distance. HC-SR04 contain 4 pins in total. The power supply pin of the sensor that mainly operates at 5V DC.
How to use an ultrasonic distance sensor with Arduino?
How to use a HC-SR04 Ultrasonic Distance Sensor with Arduino. The HC-SR04 is an inexpensive, easy to use distance sensor, with a range of 2 to 400cm. It is commonly used in obstacle avoiding robots and automation projects.
Can a hc-sr04 be used with Arduino?
Dividing it by 2 will give the actual distance of the target object. In order to get the precise distance measurement, HC-SR04 is mostly used in combination with different Arduino Modules like Arduino Uno and Arduino Mega. You can connect Arduino with this sensor in the following way.