Features

• Click on the following link for product video demo presentation. https://youtu.be/OAhIWu4IWgw
  
  Dual step motor driver design for Cartesian coordinate system
  
• ±750mA, 5-30V output rating
• Automatic current-decay mode detection/selection
• 3.0 to 5.5V logic supply voltage range
• Mixed, fast and slow current-decay modes
• Internal UVLO and thermal shutdown circuitry
• Crossover-current protection

  Duel Stepper motor driver shield for Arduino Open Source IO PWM CNC 3.3v 5v
Dual stepper motor driver shield can drive 2 stepper motors at the same time by Arduino. It can work with the power supply from 4.75V to 30V (starting from 23/07/2017, we use a new one which supports power supply from 4.75 to 15V ). High accuracy control, it can be supported by Arduino for CNC milling machine.
It uses the same stepper motor driver chip as EasyDriver, so you can use it as 2 EasyDriver modules on board. And there are all pins breakout as 3PIN electronic brick/ sensor brick interface. 
For more details on this product click on the following link: https://www.itead.cc/wiki/Arduino_Dual_Step_Motor_Driver_Shield

Parameter	Min.	Typical	Max.	Unit
Power voltage (Vsupply)	4.75	-	15	VDC
Power voltage (Vlogic)	3	-	5.5	VDC
Input voltage VH	0.7Vlogic	-	-	V
Input voltage VL	-	-	0.3Vlogic	V
Current Consumption	-	-	70	mA