STSPIN220 microtep output waveform

Dear Sir

I have bought 2 board STSPIN220 and try it with Raspberry Pico
They can to make motor rotate but when I check output waveform of current of A phase, the microstep waveform not same data in datasheet
(current of A phase I measure by shunt resistor and osccillo and output waveform as attach file)
half.bmp (146.3 KB)
1_4.bmp (146.3 KB)
1_8.bmp (146.3 KB)
1_16.bmp (146.3 KB)

Hello.

I cannot view your attachments. (Clicking on them return a “404 Not Found” error.) Can you try uploading those again?

Can you also clarify exactly what you are comparing your results to in the STPIN220 datasheet?

- Patrick