X-Band Motion Detector

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The X-Band Motion Detector from Parallax is a common ingredient in security systems and automatic door openers, and can detect movements in a room, yard, or even on the other side of a wall!

This little board utilizes a Doppler radar sensor that operates in the X-band frequency at 10.525GHz, and indicates movements with oscillations in its high/low output. Sensitivity is manually adjustable with a potentiometer on the back of the device, offering direct line of sight detection from roughly 8ft to slightly over 30ft (~2.4 to 9+ m).

  • Power supply requirements: regulated 5VDC, 8mA
  • Communication: High (3.9V) / low (0V) signal oscillates with motion
  • Operation frequency of 10.525GHz
  • Trim potentiometer on the back for manually adjustable sensitivity
  • 4-Pin SIP header for breadboard or through-hole prototyping
  • Dimensions: 1.83 x 1.87 x 0.69 in (46.5 x 47.5 x 17.6 mm)

X-Band Motion Detector Product Help and Resources

Resources and Going Further

Check out the Enginursday: X-Band Motion-Triggered Music for project ideas using this board!

X-Band Motion-Triggered Music - Front

X-Band Motion-Triggered Music - Back


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