programming chelahmy

  Computer Numerical Control ( CNC ) is very much software driven. Yet, the architecture of the CNC software is obscured from the general software world. It has evolved separately with its own paradigm and nomenclature. At the heart of a CNC is the G-Code which is an old programming language that resembles an assembly language . A G-Code keyword is a combination of a letter and digits such as G0, G2, M2, M30, etc. All letters in the alphabet are fully used in G-Code. It is all about moving a tool onto a certain path in a work coordinate system with certain speed, duration, distance, and anything related to it. They call it jogging  and inching the tool. It may involves multiple tools simultaneously. The tools need to move accordingly to make, to assemble or to move products. Understanding how G-Code works is the precursor to understand how CNC works. In a CNC controller as depicted above, the Arduino Nano becomes the G-Code interpreter to control 3 stepper motors simultaneously. G-Co