General Description
This inexpensive sensor has a range of 2cm to 400cm of non-contact measuring capability and a ranging accuracy of up to 3mm. An ultrasonic transmitter, a receiver, and a control circuit are all included in each HC-SR04 module.
On the HC-SR04, you just need to care about four pins: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground) (Ground). You'll find it simple to set up and utilize this sensor for your next range-finding project. Depending on the application, this sensor contains extra control circuitry that can avoid inconsistent "bouncy" data.
Features
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The Module transmits eight 40 kHz and detects if there is a pulse signal back using IO trigger for at least 10us high-level signal.
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The Module sends eight 40 kHz and detects whether there is a pulse signal back using IO trigger for at least 10us high-level signal.
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If the signal returns at a high level, the period of high output IO duration is the time between transmitting and receiving ultrasonic.
(high level temporal velocity of sound (340M/S) / 2 = test distance.
Applications
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5V Supply
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Trigger Pulse Input
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Echo Pulse Output
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0V Ground
Specification
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Technical
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Type－Sensor
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Function－Ultrasonic
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Part Status－Active
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