Check the listing for details. 5-30V Stepper Motor Speed Controller Driver Forward Reverse LCD Module Pulse USA. Condition: New. Listed at 21.84 USD. Multiple Functions: Support automatic, manual, serial port communication control, can control 42/57 two-phase stepping motors directly or with stepping motor drivers, it is a dedicated operation control module for single-axis stepping motors. A variety of fixed operation modes are built into the module, and the user can quickly select the appropriate motion trajectory 9 Modes: The parameters of each mode can be set in advance, with the use of buttons, it is suitable for almost all occasions, with multiple modes such as forward/reverse/delay/cycle/self-locking/no lock/speed Save Function: distance/speed/delay/cycle times can save the settings after power off. It can run independently as a module or be used with other systems.