About this 3D model

This is concept of cheap 3D scanner with lidar ( http://www.benewake.com/en/tfmini.html ).I use Arduino Nano with CNC shield + A4988 driver for stepper motor.Scanner write position (x,y,z) to SD card. buttons for home H(orizontal), for home V(ertical), scan and stop(not working yet). v1 https://www.youtube.com/watch?v=Q2yE-5H5z7s&feature=youtu.be v2https://www.youtube.com/watch?v=YJjjC-yB83Y for now:this is first test build.NOT work microstep, so 1 step is 1,8° (not good for scanner-working on)lidar accuracy is not acceptable - see video UPDATE:modify for change lidar or ultrasonic senor.enabled multistep on driver(shield has wrong wiring...)In archive scannerv2.zip are all files more info. http://mochr.cz/3d-scanner/