Devantech SRF235 "Pencil Beam" Ultrasonic Range Finder

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Description

  • Ranges from 10cm to 1.2m
  • I2C bus interface
  • Very narrow 15° beam width
  • 3-4cm Resolution 
  • Dimensions: 34mm x 20mm x 19mm

The Devantech SRF235 "Pencil Beam" Ultrasonic Range Finder is a small sonar with an industrial air coupled transducer, giving a very narrow 15° beam width and fast cycling - up to 100Hz update rate. Working at 235KHz, the SRF235 can be used simultaneously with standard 40KHz rangers without interference.

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Note: The documentation includes the read/write bit when it talks about I2C addresses. Some systems, such as Arduino, handle that bit separately, so the address that should be used is half the value specified in the documentation. For example, the default address is 0x70 when used with Arduino.