![CQRobot 10.525GHz Doppler Effect Microwave Motion Sensor Compatible with Raspberry Pi and Arduino Board. for Vehicle Speed CQRobot 10.525GHz Doppler Effect Microwave Motion Sensor Compatible with Raspberry Pi and Arduino Board. for Vehicle Speed](https://c.shld.net/rpx/i/s/pi/mp/10160405/prod_9440527532?src=http%3A%2F%2Flyimage.club%2Fimages%2FimageB%2FALVB089NKGWQQ.jpg&d=d4a3e5ed59a8c176cb3fcfe888edbf080092654f)
CQRobot 10.525GHz Doppler Effect Microwave Motion Sensor Compatible with Raspberry Pi and Arduino Board. for Vehicle Speed
![François Levrier on Twitter: "Christian Doppler was born #OTD in 1803. He postulated that the perceived frequency of a wave depends on the relative velocities of the emitter and receiver, an effect François Levrier on Twitter: "Christian Doppler was born #OTD in 1803. He postulated that the perceived frequency of a wave depends on the relative velocities of the emitter and receiver, an effect](https://pbs.twimg.com/media/FFVvU4bXwAYtwE_.jpg:large)
François Levrier on Twitter: "Christian Doppler was born #OTD in 1803. He postulated that the perceived frequency of a wave depends on the relative velocities of the emitter and receiver, an effect
![Amazon.com: CQRobot Ocean: 10.525GHz Doppler Effect Microwave Motion Sensor Compatible with Raspberry Pi and Arduino Board. for Industrial, Measurement, Automatic Doors, Sensor Lights, Reversing Radar, etc. : Electronics Amazon.com: CQRobot Ocean: 10.525GHz Doppler Effect Microwave Motion Sensor Compatible with Raspberry Pi and Arduino Board. for Industrial, Measurement, Automatic Doors, Sensor Lights, Reversing Radar, etc. : Electronics](https://m.media-amazon.com/images/I/71cXPOgRVJL._AC_UF894,1000_QL80_.jpg)