(Untitled)

[jcreed]

Got the stepper motor working!

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It works as long as I give it as small as 12ms pulses, which works out to almost a couple of revolutions per second. However iiuc the datasheet's spec of the steps I am supposed to do is in apparent conflict the datasheet's spec of where the coils are. For example, looking at the diagram of the coils, it looks like

Comments

[gf2e]

I'm sick and my brain is a bit fuzzy. First thing that comes to mind is to try moving it back and forth between different steps in the cycle and see if it changes the same angle each time. Eg: 121212 and 232323. If you're skipping a step or something that might pick it up.

I've done some stepper driving but usually with driver chips or with beefy pro controller modules so I don't have a lot of guesses from experience.

[physics_dude]

Hm it's hard to find a clear explanation of this diagram but I think you're right that the phase chart is messed up. If red and black are swapped in the chart, it looks like other charts I found for "high torque stepping".

That is to say for some reason there seems to be more on the web about how stepper motors work than how to read the schematic symbol for one.