Problem with HRLV - MaxSonar -EZ (MB 1013)

Please help! We followed the instructions on the datasheet of the MaxSonar EZ sensor but it gave incorrect and constantly-changing result.
Here is the code to measure the distance to the nearest object in millimeter:

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What are you using the sensor for?
Does get value return the analog voltage the sensor is reading is it passing it through some A to D converter?

Also, what distances are you trying to measure? See the “Sensor Minimum Distance” and “Sensor Operation from 30cm to 50cm” sections of the data sheet. While I have not used these myself, it appears that these are not meant for close up (less than 30 or 50 cm) measurements.


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