![]() Then, how can we use steppers and high-level Linux features? So, we can’t generate pulses with the required timings to control stepper motors directly from the board pins with running software, even as a kernel module. Linux is not a real time operating system. For example, auto positioning using compuvision can be very handy for some machines. These are well-known tasks that can be implemented on ARM boards, and they can be really useful for custom CNC machines. We can host a web server on a board, use a Bluetooth connectivity, use OpenCV for image recognition, build a cluster of boards, etc. This gives us the entire Linux infrastructure with all the Linux software packages. ![]() Modern ARM boards typically use Linux as a reference operating system. Such a modern approach opens a wide range of integration options with other cutting edge technologies, solutions, and infrastructures, which makes the whole project developer-friendly. I will describe how to build a CNC controller, a 3D printer in particular, using modern ARM boards - Raspberry Pi with a modern high level language - Python. CNC machine controllers are typically implemented using the C or C++ programming language and running on OS-less or real time operating systems with simple microcontrollers.
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