New Product in stock: Ultrasound distance measurement sensor SNS-US020 for range 2-200 cm with 0.3cm accuracy


SNS-US020-1

SNS-US020 is low cost ultrasonic sensor, perfect for your next robot project. It measures the distance by sending ultrasonic waves and reading back when the reflected wave. SNS-US020 operates with 5V and requires only 3mA in active mode. Note that for best results the reflection must be in hard surface, soft surfaces tend to absorb ultrasonic waves and weak the reflected signal.

Features:

  • power supply 5V
  • consumption 3 mA
  • distance 2-200 cm
  • accuracy +-0.3 cm
  • working angle 15 degree
  • trigger and echo TTL 5V
  • operating temperature 0-70C
  • dimensions 45 x 20 x 15 mm

Once trigger pulse of 10 uS is detected to trigger IO the module sends 8 pulses with 40kHz and listen to receive the reflected signal, then calculates the distance assuming speed of sound 340m/s. No temperature compensation is used for the calculation so there is error in the measurement depend on ambient temperature.

Signals to be connected:

  • VCC
  • Trig
  • Echo
  • GND

Can be used directly with Arduino with the provided code. Works perfectly up to 200 cm. All claims you will see on the net for similar devices that works up to 4-7 meters are false, so small sender/receiver can’t achieve such distance in real world.

Here is video of the demo project:

1 Comment (+add yours?)

  1. dsp
    Sep 27, 2015 @ 13:33:00

    great!
    how many values per second can I excpect from it?

    Reply

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