Stepper Motor Controller & Driver Board I (2 Control Modes)
For the board's flexibility (it can work even without pulse), so it suit for experiment demo, prototype making,student training, people DIY etc.
  Power supply : (need use two power )  
    5VDC for MCU board: +5V, GND  

9-40VDC for stepper motor power: VCC, GND  
  This stepper motor control&drive board has two control modes:  
  Mode 1.Control By buttons:
JP1 and JP2: ON
INC: Positive rotation
DEC: Reversal rotation
FUN: Stop
  Mode 2.Control by output signals:
JP1 and JP2: ON
DIR:none use.
"DEC","ADD","CP" pin input a low level signals can control stepper motor,Function as key "INC","DEC","FUN".
low level signal width > 10ms and < 100ms . other time is high level .
"DEC"-->INC: Positive rotation
"ADD"-->DEC: Reversal rotation
"CP"-->FUN: Stop


  About how to adjustment stepper motor speed:  
  JP2 Removed
INC:Acceleration (One time of pressure, one speed level upgraded. You will find it turn faster apparently after
several times of pressure.)
DEC:Deceleration (Though Reversal rotation, you will find it slow down apparently after several times of pressure.)
FUN:Speed memory (Suggest you can mount-on JP2 after speed adjustment, then it be memorized even power off.)
  Note: Please turn off power supply before you mount-on or remove the jumpers.  
  in PCB have a 24c02 DIP8 chip,this chip function is memory speed value,EEPROM address is 0x08,you also can use eeprom programmer to change this value to change motor speed.  
  About how to connect stepper motors:  
  6 wires or 4 wires stepper motor, 2-phase, amperage<2A.  
  A+ to A;
A - to B;
B+ to C;
B - to D;
Common Empty (If it's 6 wires motor)
PCB picture1
PCB picture2
PCB picture3
L298N dual full-bridge driver datasheet

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