Contents
What is the purpose of the hc-sr04 sensor?
HC-SR04 is an ultrasonic sensor mainly used to determine the distance of the target object. It measures accurate distance using a non-contact technology – A technology that involves no physical contact between sensor and object.
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.
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.
Which is power supply pin on hc-sr04?
HC-SR04 contain 4 pins in total. The power supply pin of the sensor that mainly operates at 5V DC. It plays a vital role to initialize measurement for sending ultrasonic waves. It should be kept high for 10us for triggering the measurement.
How many pins are in the hc-sr04?
HC-SR04 contain 4 pins in total. The power supply pin of the sensor that mainly operates at 5V DC. It plays a vital role to initialize measurement for sending ultrasonic waves.
Is the hc-sr04 a sharp rangefinder?
It operation is not affected by sunlight or black material like Sharp rangefinders are (although acoustically soft materials like cloth can be difficult to detect). It comes complete with ultrasonic transmitter and receiver module. The timing diagram of HC-SR04 is shown.
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 does an ultrasonic sensor measure accurate distance?
It measures accurate distance using a non-contact technology – A technology that involves no physical contact between sensor and object. Transmitter and receiver are two main parts of the sensor where former converts an electrical signal to ultrasonic waves while later converts that ultrasonic signals back to electrical signals.