3D Printer CNC V3 Engraver Expansion Board 3pcs A4988 Driver Module

1、The expansion board can be used as engraving machine, 3D printer and other drive expansion board. 2、Compatible with GRBL 0.8. Open source firmware running on for that converts G code commands into stepped signals. 3、PWM spindle and direction pins, support 4‑axis (X, Y, Z, A ‑ you can copy X, Y, Z or use the pin of D12 and D13 to custom firmware to perform the complete axis 4). 4、Compact structure, stepper motors can be connected to 4 pin connectors or soldered. 5、This is a set of disassembled parts and you need basic soldering techniques to solder them together. Features: The expansion board can be used as engraving machine, 3D printer and other drive expansion board. Compatible with GRBL 0.8. Open source firmware running on for that converts G code commands into stepped signals. PWM spindle and direction pins, support 4-axis (X, Y, Z, A - you can copy X, Y, Z or use the pin of D12 and D13 to custom firmware to perform the complete axis 4). Compact structure, stepper motors can be connected to 4 pin connectors or soldered. This is a set of disassembled parts and you need basic soldering techniques to solder them together. Specification: Radiator Size: Approx 8*8mm CNC Expansion Board: Version: V3.0 Board Size: Approx. 68 x 53mm / 2.7 x 2.1in A4988 Driver Module: Thermal Shutdown Circuit: Yes Crossover Current Protection: Yes Ground Fault Protection: Yes Short Circuit Protection: Yes Five Modes: full, 1/2, 1/4, 1/8 and 1/16 Size: Approx. 20 x 15mm / 0.8 x 0.6in Mix use the slow current decay model. Internal UVLO and low RDS (on) output. Current decay mode automatically detected/selected. Three-phase rectification, low power consumption. Package List: 1 x CNC V3 Expansion Board 3 x A4988 Driver Module 3 x Radiator