z-axis movement via ultrasonic sensor

Sir,
I am Using ToF sensor , which field is quite narrow , but can you suggest me how can i achieve this setup by ardiuno.(or you suggest me any other board)
or please suggest me any tutorial so i can learn that.

thank you for your support ,this mean a lot to me.

Yes Real time height adjustment , how can i achieve all this?
please suggest me any tutorial or give me some hint , i know how to connect sensor to ardiuno but how it will going to communicate with LunixCnc.

Please help me with this sir

one more time i had to bother you sir,
in my understanding X Y Z all moments are control by G-code and M-code, and these code are provided by CAD.
they fed to the CNC , then how the sensor going to interact with z axis.

What if i create a mechanism that read sensor o/p and move entire tool up and down.

this motor(rack and pinion arrangement ) will completely independent of x y z axis motors.