Hi, @salim_mahmud
Its your project, not ours, you know all about it, we don't.
So what is wrong with asking pertinent questions?
90 steppers will possibly require some decent power supplies.
Can I suggest you Google;
Pololu stepper driver
They have a large array of stepper drivers and are a reputable supplier.
I am a 66yo Electronics Engineer, working in design and repair of industrial and commercial control equipment.
Thanks.. Tom..
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PS, My late mum
used to call me Tommy.. ![]()