1.this Module Is A Pulse Generation Module, Supply The Control Signal To Stepper Driver.to Control The Stepper Motor, It Must Be Equipped With A Drive. 2.this Simple Controller + Stepper Motor + Stepper Motor + Dc Power Supply Can Be Composed Of A Simple Set Of Control Platform. 3.the Controller Has High 5.4k-160khz, Middle 540-16.6khz, Low 80-2.4khz Total Of 3 Kinds Of Low Frequency Signal Can Be Used To Select The Jumper. 4.can Produce Pulse Signal, Can Also Produce Pwm Signal, Can Choose The Jumper. 5.the Frequency Of Measurement: Pul And Common Cathode End. En=ena=free Enable Pul=puls=clk Pulse Dir=cw=cww Direction Common Anode Connection Method (b) En+ Pul+ Dir+ Connect Together To Com+. En- Connect En Pul- Connect Clk Dir- Connect Dir Colour:black Material:pcb Package Contents: 1 X Pulse Signal Generator To Stepper Motor Driver Module Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting And Different Displays May Cause The Color Of The Item In The Picture A Littl