This low cost ultrasonic range finder is a easy-to-use distance sensor can detect objects from approximately 2 cm - 4.5 meters. The on-board four-pin header makes it compatible with a solderless breadboard.
Overview
This Ultrasonic Sensor provides a very low-cost, stable and easy method of distance measurement. This sensor is perfect for any number of applications that require you to perform measurements between moving or stationary objects. This ultrasonic distance sensor is widely used in robotics applications and is also useful in security systems or as an infrared replacement.
The Ultrasonic Sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance-to-target is determined by measuring the time required for the echo return. Output from the sensor is a variable-width pulse that corresponds to the distance to the target.
Interfacing to most microcontroller or control board is a snap: a single I/O pin is used to trigger the sensor and "listen" for the echo return pulse. An on-board four-pin header allows the sensor to be plugged into a solderless breadboard, and to be connected to its host through a standard extension cable.
Key Specifications
- Range: 2 cm to 4.5 meters
- Supply Voltage: 5V +/-10%
- Supply Current: 30 mA typical, 35 mA maximum
- 4-pin interface (Vcc, Trig, echo, GND)
- 20 mA power consumption
- Narrow acceptance angle (< 15 degree)
- Simple pulse in / pulse out communication
- Input Trigger: positive TTL pulse, 10 us minimum
- Burst Frequency: 40 kHz
- Size: 45 mm x 20 mm
Dimensions
| Size: |
4.5cm x 2.0cm |
| Weight: |
4.3 g |
General specifications
| Resolution: |
0.3 cm |
| Maximum range: |
4.5 m |
| Minimum range: |
2 cm |
| Sampling rate: |
20 Hz |
| Baud: |
9600 |
| Minimum operating voltage: |
5.0 V |
| Maximum operating voltage: |
5.0 V |
| Supply current: |
2 mA |
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