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The following parts were obtained from https://www.aliexpress.com/
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1 only UNO R3 for arduino MEGA328P 100% original ATMEGA16U2 with USB Cable

2 only 2A phase 3D Printer Big Easy Driver board v1.2 A4988 stepper motor driver board

2 only Nema17 for 12VDC 2800g.cm 34mm length 4-Lead 17HS3430 17 motor Stepper Motor for CNC

1 only 5pcs/lot Tower pro SG90 RC Micro Servo 9g For Arduino

1 only CPS-3205 Compact Mini Variable Adjustable DC Power Supply 0-32V 0-5A AC110-240V

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Notes
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Adjust, in turn, the current-limit potentiometer on each of the Big Easy Drivers boards 
for a reading of 400 milliamps on the CPS-3205 power supply.