2 Axis GRBL Offline Controller Board with A4988 Driver for Laser Engraving Machine Carving

1. Dual drive supports XYY two-axis work
2. Press the power switch, safe and efficient
3.3P steering gear expansion interface
4.4P Bluetooth expansion interface
5. Support connecting offline controller
6. Optional 3P/4P, 12V TTL/PWM laser control interface
7. Both the data transmission chip and the main control chip use an external crystal oscillator,
the transmission operation is more stable
8. Acrylic shell protection