?Convenient for external power?This set comes with 5 DC Power Connectors. Features two wires on the other Red Black wire jackets indicate polarity. Use DC Power Jack Plug Adapter Connectors, no electrical tap, no splicing, no crimping, but only need a small screw driver.
?Stepper motor?Stepper motor with a standard interface, when used directly pluggable.
?ULN2003 Driver Board?5 line 4 phase can be used for ordinary ULN2003 chip driver, connect to the 2 phase , support the development board?With convenient use, direct docking.
?4 work LED?A, B, C, D four-phase LED indicates the status of the stepper motor work.
?Reference Tutorial?If you have questions about the use of this combination, please visit: https://www.makerguides.com/28byj-48-stepper-motor-arduino-tutorial/