SparkFun
Ultrasonic Distance Sensor - HC-SR04
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$10.31
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This is the HC-SR04 ultrasonic distance sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy...
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This is the HC-SR04 ultrasonic distance sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.
There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and use for your next range-finding project!
This sensor has additional control circuitry that can provide inconsistent "bouncy" data depending on the application.
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HC-SR04 Ultrasonic Sensor Datasheet
Datasheet · 78.7 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 630.4 KB · Click any page to view full size
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