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Topic: Doppler Radar Motion Sensors - anyone used one (Read 7211 times) previous topic - next topic


There seem to be a lot of devices like


on eBay.  ( Search for Doppler Radar sensor ).   Prices in the 7-12 USD range.

Anyone used one of these gadgets ? 


Mar 18, 2013, 10:16 pm Last Edit: Mar 18, 2013, 10:35 pm by Erdin Reason: 1
Those are the radar modules without comparators.
It is useless.... until you build a radar detection circuit with comparators.

You should use the radar modules with a sensitivity pot on the back side. Those have a digital output if motion is detected.


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