HC-SR04 Ultrasonic Range Finder

Sparkfun ElectronicsSKU: RB-Spa-1388
Manufacturer #: SEN-15569

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Sale price ¥773

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  • Power Supply: 5V DC
  • Ultrasonic Frequency: 40 kHz
  • Resolution: 3 mm
  • Measure Angle: 15°
  • Ranging Distance: 2 - 400 cm

The HC-SR04 Ultrasonic Range Finder is an economical sensor that provides 2 to 400 cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3 mm. Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.

There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and to use for your next range-finding project!

  • 1x HC-SR04 Ultrasonic Range Finder

HC-SR04 Ultrasonic Range Finder- Click to Enlarge

  • 45 x 20 x 15 mm
  • Working Voltage: 5V DC
  • Working Current: 15 mA
  • Working Frequency: 40 kHz
  • Measure Angle: 15°
  • Ranging Distance: 2 - 400 cm
  • Trigger Inpt Signal: 10uS TTL pulse
  • Echo Output Signal: Input TTL lever signal and the range in proportion

Customer Reviews

Based on 1 review
Eric Lewandowski
Good item

Easily plugged with a Arduino Uno using the Newping library. I am a a newbie with Arduino and I noticed that sometimes I received a distance à 0 even if there's an object in front of the sensor. I don't know why. I have to investigate this issue. Maybe there's something wrong in my code.

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