Laser Engraver Mainboard 32 Bit Main Board with A4988 Step Motor for Makerbase MKS DLC32 V2.1 12‑24VDC Item Type: Laser Engraver Mainboard Material: PCB Model: FOR MKS DLC32, motherboard. A4988, driver. Voltage: 12-24VDC MCU: ESP32-WROOM-32U, 32bits. MCU Frequency: 240MHz FLASH: 8192K Bytes RAM: 520K Bytes Engraving Speed: <=8000mm/min PC Engraving: Supports Offline Mode: Supports LCD: Supports Integrated WIFI: Supports Web Page Control: Supports Mobile APP Control: Supports For GRBLaser: Supports For LightBurn: Supports A4988 Driver Introduction: A4988 is a complete micro stepper motor driver with built in converter, easy to operate. The bipolar stepper motor can operate in full step, half step, 1/4, 1/8, and 1/16 step modes, with an output drive capacity of up to 35 V and ± 2 A. A4988 includes a fixed off time current regulator that is in slow or mixed decay mode. The A4988 converter is the key to easy implementation. The step input only requires one pulse to drive the motor forward one microstep. There is no phase sequence table, high frequency control line, or complex programming interface. The A4988 interface is very suitable for situations where complex microprocessors are unavailable or overloaded. A4988 Driver Features and Advantages: 1. Low RDS on output. 2. Automatic current attenuation mode detection or selection. 3. Mixing with slow current decay mode. 4. Synchronous rectification, low power consumption. 5. Internal undervoltage lockout. 6. Cross flow protection. 7. 3.3 and 5 V compatible logic power supply. 8. Thermal shutdown circuit. 9. Earth fault protection. 10. Load short circuit protection. 11. 5 Available Stepper Modes: full step, 1/2, 1/4, 1/8, and 1/161.