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Author Topic: Short range sensor  (Read 72 times)
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graciano
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« on: May 20, 2013, 02:22:04 pm »
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Hi!
I want to count car miniatures passing in a narrow path ( 5 to 10 cm).
What kind of sensor could i use in this situations?
Thanks
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Magician
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« Reply #1 on: May 20, 2013, 04:25:33 pm »
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Infra Red (IR) , here just an example: http://www.adafruit.com/products/466
If you can mount LED behind the object and Photodiode on the other side,  than you may use cheap version of light-beam breaker
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http://coolarduino.wordpress.com/2011/02/10/color-organ-spectrum-analyzer-on-arduino/

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