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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).
Based on 1 ratings:
Absolutely no output from this module.
Tried adjusting sensitivity, checking test point with oscilloscope and nothing. Disappointed.
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