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Keyestudio CNC V0.9A board+3pcs 4988 Driver W/Heat Sink + USB cable for arduino CNC/laser engraving machine/writing robots GRBL

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KS0311 CNC V0.9A + 4988 (1)KS0311 CNC V0.9A + 4988 (7)KS0311 CNC V0.9A + 4988 (3)KS0311 CNC V0.9A + 4988 (5)KS0311 CNC V0.9A + 4988 (6)KS0311 CNC V0.9A + 4988 (2)KS0311 CNC V0.9A + 4988 (4)


KS0311 CNC V0.9A + 4988 (8)


This kit mainly includes a keyestudio CNC V0.9A and three A4988 driver modules.

Keyestudio CNC GRBL V0.9 is a main board developed by Keyestudio for CNC, laser engraving machine, writing robots and other robots. It has complete interfaces with cost-effective and can be driven via external connection, suitable for DIY and factory use.

The A4988 is a DMOS microstepping driver with converter and overcurrent protection, which can operate a bipolar stepper motor in full, half, 1/4, 1/8 and 1/16 step modes, with output-driven performance up to 35 V and ± 2A. The A4988 also includes a fixed off-time current regulator that operates in slow or mixed-decay modes.

Specifications of CNC V0.9A

1.      Microprocessor:MEGA328p

2.      Input Voltage:DC 12V

3.      Supporting File Format:Gcode

4.      Supporting Machine Structure:CNC, laser engraving machine, writing robots

Features of A4988 Driver

1.      With simple stepper and direction control interface.

2.      Five different step modes: full, half, 1/4, 1/8 and 1/16 step modes.

3.      Adjustable potentiometer used to adjust the max current output to gain higher step rate.

4.      Automatic decay mode detection/selection.

5.      Overheat closed circuit, under-voltage lockout, cross-current protection.

6.      Ground short-circuit protection and load short-circuit protection.  


Setting Method of A4988 Working Mode

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