3D scanner (lidar, ultrasonic) v2

myminifactory

This is the concept of an affordable 3D scanner with Lidar (http://www.benewake.com/en/tfmini.html). I utilize Arduino Nano combined with a CNC shield and A4988 driver for the stepper motor. The scanner records position coordinates (x,y,z) on an SD card. Keys are assigned to horizontal home, vertical home, scan, and stop functions - although the stop feature is not currently operational. Version 1: https://www.youtube.com/watch?v=Q2yE-5H5z7s&feature=youtu.be. Version 2: https://www.youtube.com/watch?v=YJjjC-yB83Y. Currently, this represents the first test build. Microstep functionality is not active, resulting in a single step equivalent to approximately 1.8 degrees - an unsuitable configuration for scanner operation. The Lidar's accuracy falls short of expectations as demonstrated in the accompanying video. UPDATE: Modifications have been implemented to enable swapping out the Lidar or ultrasonic sensor and also to activate multistep on the driver, although the shield is currently wired incorrectly. An archive containing all files can be found in scannerv2.zip. Additional information is available at http://mochr.cz/3d-scanner.