1、This module is pulse generation module, supply stepper driver as a signal, to control stepping motor, also must match the drive. 2、The simple controller + stepper driver + stepper motor, dc power can be composed of a set of simple control platform. 3、The controller has high 5.4 k 540 - in - 160 KHZ, 16.6 KHZ, low on a total of 3 80-2.4 KHZ frequency signal can be used to jump needle selection. 4、Can produce pulse signal as well as PWM signal, cand an choose jumper. 5、Frequency measurement: can measure both PUL and coyin (or coyang) ports. Condition: 100% Brand New Item Type: Stepper Motor Drive Controller Material: Metal Coloe: As Pictures Shown Out of sync motor driver port tag is different but the same function EN = ENA = FREE can make PUL = PULS = CLK pulse DIR = the CW = CWW direction Yang connection (B) EN + PUL + DIR + together received a total of anode side. Meet EN EN - PUL - answer the CLK DIR - meet DIR A total of Yin connection (B) EN - PUL - DIR - together received a total of cathode . EN + meet EN PUL + answer the CLK DIR + meet DIR 1 x Stepper Motor Drive Controller 2 x Screw Gasket