The HC-SR04 ultrasonic sensor offers economical, non-contact distance measurements from 2cm to 400cm with up to 3mm accuracy, integrating a transmitter, receiver, and control circuit.
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This is the HC-SR04 ultrasonic distance sensor, now in Red! This economical sensor offers non-contact measurement functionality ranging from 2cm to 400cm, with a ranging accuracy of 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 prevent inconsistent "bouncy" data depending on the application.
Note: This is the same ultrasonic sensor used with the XRP & XRP DIY kits.
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