An MPM3610 buck converter lets you power the entire project with a 12V DC power supply. It converts the 12V down to 5V to power the KB2040 through the RAW pin.

Power

• DC power positive to MPM3610 Vin (red wire)
• DC power ground to MPM3610 GND (black wire)
• DC power positive to STSPIN220 + terminal block (red wire)
• DC power ground to STSPIN220 - terminal block (black wire)
• MPM3610 5V to KB2040 RAW (orange wire)
• MPM3610 GND to KB2040 G (black wire)

STSPIN220 Wiring

• KB2040 3V to STSPIN220 VDD (red wire)
• KB2040 GND to STSPIN220 GND (black wire)
• KB2040 D2 to STSPIN220 DIR (blue wire)
• KB2040 D3 to STSPIN220 STEP (green wire)
• KB2040 D4 to STSPIN220 MS1 (yellow wire)
• KB2040 D5 to STSPIN220 MS2 (white wire)
• KB2040 D6 to STSPIN220 EN (cyan wire)
• KB2040 D7 to STSPIN220 RST (pink wire)

Stepper Motor

• STSPIN220 1A to stepper motor coil A+ (green wire)
• STSPIN220 2A to stepper motor coil A- (grey wire)
• STSPIN220 1B to stepper motor coil B+ (yellow wire)
• STSPIN220 2B to stepper motor coil B- (red wire)