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Stepcraft 420 CNC build
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I connected the Arduino Uno to the LPT port of the Stepcraft. The connections that I made:
I use LibreCad to draw the parts that I want to make. It's a free and open source CAD application for Windows, Apple and Linux. Where CAD stands for Computer-Aided Design.
For creating the milling paths and controlling the Stepcraft I use the Estlcam software package that is created by Christian Knüll. Where CAM stands for Computer-Aided Manufacturing. The main advantage for me is the low level entry to milling software. And it uses a Arduino Uno for controlling the stepper motors. And don't be afraid, you don't have to program anything, just click and go.