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BackAll three pins need wires: - clk in - CV out, with probably +12v gates. Variable step count, 1-10 steps.
- FNR5015S, 5.0x5.0x1.5mm, https://datasheet.lcsc.com/lcsc/1806131217_cjiang-Changjiang-Microelectronics-Tech-FNR5040S3R3NT_C167960.pdf Inductor, Changjiang, FNR5030S, 5.0x5.0x3.0mm.
- Your rights, we need to specify the values.