USBPIR: USB Passive Infra-Red (PIR) Motion Detector

Detect Human Motion from your USB Port

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USB Passive Infra-Red (PIR) Motion Detector Module.

Need to detect motion from your computer? The USBPIR Passive Infra-Red sensor module easily interfaces to your computer, laptop, or tablet and can be set up to detect motion of humans or animals. Uses of the USBPIR:

  • Room Occupancy Sensing
  • Kiosk Action Trigger
  • Museum Displays
  • Daycare Area Alerts
  • Elderly Well-being Sensors
  • Pet/Animal Detection

The CGUSPPIR module assembly is a motion detector that identifies as a U421 USB Interface. The module detects changes in the field of infra-red that it “sees”, and interprets that as motion. The sensor has a range of about 20 feet.

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The PIR module performs a self-calibration on powerup that lasts up to 40 seconds. During this period it is important to provide the sensor with as little motion or change in environment as possible.

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Read Port A bit 5 in order to read the PIR status. The pin is normally low, motion makes it momentarily high.