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Amazon.com: AEDIKO 10pcs HC-SR04 Ultrasonic Module Distance Sensor with Wire Cable : Industrial & Scientific
ETechnophiles - HCSR04 ultrasonic sensor pinout: The ultrasonic sensor, also known as a ping sensor measures the distance of an object from its surface by emitting and receiving sound waves. The transmitter
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GitHub - talhatallat/Water-Quantity-Measurement: Measures the water level in the tank using an ultrasonic sensor
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