Replies

  • Alexandre Nascimento July 19, 2012 at 5:00pm

    Component Overview

    • 42kHz Ultrasonic sensor measures distance to objects
    • RoHS Compliant
    • Read from all 3 sensor outputs: Analog Voltage, Serial, Pulse Width
    • Virtually no dead zone, objects closer than 20 cm range as 20 cm
    • Resolution of 1 cm
    • Operates from 3.3-5.5V
    • Low 3.4mA average current requirement
    • 10Hz reading rate
    • Small, light weight module
    • Designed for easy integration into your project or product
    • Operational Temperature from -40˚C to +70˚C (-40˚F to +160˚F)
    • Real-time automatic calibration (voltage, humidity, ambient noise)
    • Firmware filtering for better noise tolerance and clutter rejection
    • 200,000+ Hours Mean Time Between Failure
    • Widest and most sensitive beam of our XL-MaxSonar-EZ sensors
    • Maximum range of 765 cm (300 inches)
    • Hardware gain of 4000
    • Long range, wide detection zone for small targets

    Thank you

  • Wesley Chuen July 19, 2012 at 4:58pm

    yes, that's normal.  The lowest it shows it's 20-21cm.

  • Developer
    Jason Short July 19, 2012 at 4:49pm

    check the sonar docs. 21 is the lowest number reported.

    Jason

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