Grove - Ultrasonic Distance Sensor

Grove - Ultrasonic Distance Sensor

The Grove Ultrasonic Distance Sensor is a device that uses ultrasonic waves to measure the distance between itself and an object. It has a range of 3 cm to 350 cm and an accuracy of up to 2 mm. It is an excellent choice for projects involving distance measurement, proximity detection and ultrasonic detection.

The ultrasonic module has both a transmitter and a receiver, making it a transceiver. It works like a sonar by sending out a 40 kHz ultrasonic wave and measuring the time it takes for the wave to bounce off an object and return to the receiver. The distance to the object is then calculated by multiplying this time by the speed of sound in air (340 m/s).

The Grove ultrasonic distance sensor is an enhanced version of the traditional HC-SR04 module. It features a single-chip microcomputer and uses time-division multiplexing to share one pin for transmit and receive signals, so it requires only one input/output pin. In addition, while the HC-SR04 only supports 5 V, the Grove sensor can be used with both 5 V and 3.3 V. This is useful for devices such as the Raspberry Pi, which only support 3.3V I/O. The Grove sensor can be connected directly to the Raspberry Pi's I/O, but the HC-SR04 needs a voltage conversion circuit.

Grove Ultrasonic Distance Sensor: Information

Features :

• 3.3V/5V compatible, wide voltage level: 3.2V ∼ 5.2V.
• Only 3 pins needed, save input/output resources.
• Wide measurement range of 3cm ∼ 350cm.
• Easy to use, slot connector, plug and play.

Possible applications:

• Distance measurement.
• Ultrasonic detector.
• Proximity alarm.
• Intelligent car/buggy/robot.

Contents :

• 1 x Grove Ultrasonic Distance Sensor.

Dimensions :

• Length: 50 mm.
• Width: 25 mm.
• Height: 16 mm.

Requires :

• Grove compatible interface.
• A Grove compatible connection cable.