Grove - Ultrasonic Ranger

The Grove - Ultrasonic Distance Sensor is an ultrasonic transducer that utilizes ultrasonic waves to measures distance. It can measure from 3cm to 350cm with the accuracy up to 2mm. It is a perfect ultrasonic module for distance measurement, proximity sensors, and ultrasonic detectors.

Compared with the traditional ultrasonic module HC-SR04, the Grove - Ultrasonic Distance Sensor integrates a single-chip microcomputer, and the transmitting signal and the receiving signal share one pin by time-division multiplexing, so only one I/O pin is occupied. Another difference is that HC-SR04 only supports 5V voltage, while Grove - Ultrasonic Distance Sensor supports 5V and 3.3V As we know, the Raspberry pi I/O only supports 3.3V. Therefore, Grove - Ultrasonic Distance Sensor can be directly connected to the I/O of the Raspberry Pi, while the HC-SR04 needs to use a voltage conversion circuit.

Features

• 3.3V / 5V compatible, wide voltage level: 3.2V~5.2V
• Only 3 pins needed, save I/O resources
• Wide measurement range: 3cm ~ 350cm

Specifications

• Measuring range: 3cm ~ 350cm
• Operating voltage: 3.2 ~ 5.2VDC
• Operating current: 8mA
• Ultrasonic frequency: 40kHz
• Output: PWM