1PC HW-434 A4988 DRV8825 Stepper Motor Driver Control Panel Board Expansion Shield Board Module for 3D Printer

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Product review & video
[Music] in this video I'll show you how to set the VF for the drv8825 in the a 4988 stepper motor drivers the drv8825 in the a 4988 art stepper motor drivers that are widely used in 3d printers small hobby CNC machines robot arms in in many other projects with stepper motors these drivers are dirt cheap they cost under $1 and are usually bought already assembled in small boards named step sticks these are very useful and since they can be bought for less than a dollar I always like to have two sets of four in my parts boxes so that I can fix my 3d printers in case they get damaged now you may be wondering what is VF and why does it need to be set right VF is a voltage reference that corresponds to the maximum current that will flow to your stepper motors it is very important to set it right because excess current will overheat and eventually burn your motors and drivers also if you want
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