I have a Parallax PIR sensor ( http://www.ladyada.net/media/sensors/PIRSensor-V1.2.pdf ) and I have code that checks to see if the sensor goes high. It works with the exception that I get random triggers every once in a while when there is no motion involved. I am assuming I need a pull-up/pull-down r…

PIR Sensor Question

Forum 2005-2010 (read only) General Frequently-Asked Questions

GrooveFlotilla January 27, 2010, 8:59pm 12

You may want to set the initial state of the transistor output in "setup", with a "digitalWrite".
You may also want to stop reading it - it doesn't make much sense.

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PIR Sensor Question

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