



A4988
Supports A4988 and DRV8825 stepper motor drivers
Compatible with 16 microstepping for A4988 and 32 microstepping for DRV8825 (jumper settings ONDP)
Original chip used for stable and continuous performance
Designed specifically for electronic design competitions
Separate USB and peripheral power supply to ensure computer safety
100uF capacitor included for power stabilization
Supports common anode and common cathode wiring methods for 5V input level drivers
17 open ports with optocoupler isolation for stepper motor driver signals
Supports 5-axis stepper motor control
Input signals optocoupler isolated for emergency stop, tool setting, and limit switches to protect computer safety
One relay output port (P17) for spindle switch control

TYPEC interface 168P chip soldered + cable
CN¥22.68
One optocoupler isolated 0-10V analog voltage output (P1) for spindle speed control via compatible frequency converters
PWM output on P1 for spindle speed controller with optocoupler input
JC pins E, S, D, G correspond to ENABLE, STEP, DIR, GND signals
1. Compatible with MACH3 and other parallel port control software
2. Optical isolation for input signals enhances safety and noise immunity
3. Supports emergency stop, tool setting, and limit switch inputs
4. Relay output for spindle control
5. Analog voltage output for spindle speed control
6. Supports both common anode and common cathode wiring methods
7. Designed for stable and reliable stepper motor driving with original chips
When using DRV8825, follow specific wiring instructions for output connections
Compatible with TB6560 driver and parallel port computer control systems
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