Dual stepper motor shield

This Arduino shield integrates two stepper motor drivers based on the A3967 integrated circuit, offering the same functionality as two EasyDriver modules on a single board. It allows simultaneous control of two bipolar stepper motors, making it ideal for Cartesian coordinate systems or small CNC milling applications.

The shield supports a motor supply voltage ranging from 4.75 V to 15 V DC, with an adjustable current up to ±750 mA per motor. It features breakout pins compatible with the 3-pin electronic brick interface, simplifying wiring and integration into your projects.

Specifications

• Driver Chip: A3967 (dual channel)
• Motor Voltage: 4.75 V to 15 V DC
• Max Current: ±750 mA per motor (adjustable)
• Logic Supply: 3.0 V to 5.5 V
• Control: Step and Direction signals on digital pins
• Micro-stepping: Selectable via MS1/MS2 pins
• Interfaces: Compatible with 3-pin Brick interface, I²C (A4/A5), UART (D0/D1)
• Protection: Automatic decay detection, over-voltage and thermal shutdown protection