Probably a beginner question but…
is it possible to use polar electrolytic capacitors for the logic power supply as well as the stepper power supply. The schematic in the introducing PDF-file shows some unipolar caps, so I’m a little bit confused due to my minor experiences.
Cheers…
T.
Hello,
Are you referring to the getting started guide from this thread?
The decoupling capacitors shown in that guide are not strictly necessary; the A4983/A4988 stepper driver carriers are designed to be usable as-is. However, it does not hurt to add additional decoupling, and you can use as big of a capacitor(s) as you want (more capacitance will provide more smoothing for the supply voltages).
It does not matter whether the capacitors are polarized or not; just make sure you connect them in the correct orientation (if they are polarized) and that they are rated for the voltage you are using them on.
- Kevin
