I’m wiring up stepper motors using the tiny 4988 controllers. I’ve read the article on LC voltage spikes.
I know I need an electrolytic capacitor as close to the board as possible.
The motors are Vexta PK266-02A, 2A, 1.8 Ohm. I plan to run them at 12 volts, 1-2 A per coil depending on the required torque I wind up needing.
Is a 35V 330 uF capacitor appropriate? I have some larger capacitors in the 1000uF range. I also have some 50V 33uF capacitors. I’ve got some 16V rated capacitors in the 100 uF range. (I think I am describing the units appropriately, the symbol preceeding the F looks like a Greek “mu”, I assume it’s picoFerads but I’m way out of my depth here)
Is bigger better? How big is big enough? Does the initial transient spike mean I need a capacitor capable of dealing with the maximum voltage point of the highest spike?
Should I use one of your electronic switches close to the controller board as well, then energize the overall system, and only then use your electronic switch to supply power to the stepper board, hopefully avoiding the transients issue alltogether?
Is there a combination of these things that would be best?
Thanks for any help.
All the best,