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looking for Car detection Sensor

Hi ,

I am using 3 axis Magnetometer Sensor(LIS3MDL) Sensor for Car detection. but issues is some time it's not working. please suggest me any other low power proximity for detecting car.

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1 REPLY 1

Magnetometer is a nice and cheap solution. You must tune your algorithm. Make sure to use all the axis values.

I would continuously take the measurements, average several measurements, then calculate sqrt(x*x + y*y + z*z) and detect big changes (delta) of two calculated values.