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Aug 16, 2015 - Modified Aug 16, 2015
CFTechno - in reply to CFTechno

For those that want to test that 0.11mm fluctuation. I have connected the sensor to a aduino and wrote a very short sketch.
[code]
// read the input on analog pin 0:
int sensorValue = analogRead(A0);
// print out the value you read:
Serial.println(sensorValue,DEC);
delay(10); // delay in between reads for stability
[/code]
I collected around a 1000 samples while a piece of filament was placed in the sensor. This is the result:

http://i18.servimg.com/u/f18/13/37/93/48/sensor10.png

The black line is a 32period moving average.