Stepper motor and their choice is a very extensive topic and it is not possible to tell everything in one video. I'll try on my fingers to explain the main points that you need to know when choosing a stepper motor for the CNC machine.
In the seen when I say "Coil", I mean "Winding the SD". Sorry for the reservation!
Stepper motors are divided into two groups of bipolar and unipolar. Drivers L298n and СNC shield are designed for connection of bipolar stepper motors with two windings, i.e. with 4 wires.
In the video, I'll show you how to connect the SD with 5, 6, and 8 wires. Also how to convert a unipolar stepping motor into a bipolar one.
I'll tell you how to choose a stepper motor for voltage.
The main parameters of the stepping motor are the number of steps necessary to make the motor shaft rotate 360 ​​degrees. In Video, I tell you how to find out this parameter.

In a word, all the interesting data on the engine can be found in the datasheet. But not all engines can be found datasheet. In such cases, it will be necessary to measure and calculate the value obtained. On the calculations will be described in the following video, when I will adjust the operating current of stepper motors and calibrate the CNC machine.



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