I've seen others use these microwave radar sensors: It's a 3 Pin (gnd, vcc, output), and has an LED to tell you if it's triggered. [image] https://www.mpja.com/Microwave-_-Radar-Motion-Sensor-Module-5V/productinfo/36114%20MP/ I'm getting really buggy results. Sometimes it seems to work fine, but …

Do you have it mounted at the recommended heights? Is it in a room with air currents or plant foliage? Paul

Paul_KD7HB: Do you have it mounted at the recommended heights? Is it in a room with air currents or plant foliage? Paul Looking at the datasheet, I do see it now that it recommends 2-6M "Mounting Height", and "centered is best". Mine was table height, so probably only 1 meter above the floor. I…

You are giving it stable regulated 5V?, this is an analog RF device, clean power rails are likely to be vital else it will trigger all the time from noise on the rail. The principle they operate on looks for very small low frequency variations in oscillator current draw, so variations in the supply …

Also remember to not move as much as a finger, and slow your breathing when you sit next to it waiting for the signal to go down. That's how sensitive those things can be.

Microwave radar sensors - kinda buggy?

Other Hardware Sensors

arusr January 23, 2020, 2:23pm 5

DaveEvans:
Does your DMM say that the power you are supplying is within the sensor's requirements?

Yes, I'm reading 5.2V on the VIN, so I'm within the tolerance.

Help, HFS-DC06F radar - really unstable detection?

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Microwave radar sensors - kinda buggy?

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