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Electronics => Electronics => Topic started by: Armouralis on January 08, 2009, 07:12:16 PM

Title: Low error margin Sharp IR
Post by: Armouralis on January 08, 2009, 07:12:16 PM

Quote from: Admin on January 03, 2007, 07:01:41 PM

what would you consider acceptable error? if it is off by .4 inches, is that ok? or maybe .04 inches? there will always be some error

i have a sharp ir rangefinder  (GP2Y0A21YK), and i would like to know the margin of error in a average room of an average house on a wall

i would idealy like a sensor that has a 1/4 inch of an error.
is the GP2Y0A21YK acurate to 1/4 inch, or what is it accurat to?

is the sonar more accurate? or is another type of ir range finder more accurate?  what would their margin of error be?

thx in advance

i would like to know using the sharp ir range finder (GP2Y0A21YK) how close to three inches i would be thx

Title: Re: Low error margin Sharp IR
Post by: Admin on January 14, 2009, 11:24:03 AM

It has non-linear accuracy, meaning that the accuracy improves the closer the object gets to the Sharp IR. 1/4th inch sounds reasonable.

Sonar is less accurate, and much slower. Check the sonar datasheet for error margin.