This is the latest version of the expansion board, which can be used for engraving machines and 3D printers. It can drive 4 A4988/DRV8825 stepper motors.
The jumper caps are necessary for CNC setups. You do not need to purchase this part extra.
DRV8825 is upgrade of A4988! It is a must-have module for 3D printers, CNCs and engraving machines. The 4-layer PCB board has better heat dissipation performance.
It uses a 22AWG wire that can withstand a current of 2A and a voltage of 300V. Better quality than traditional copper wire.
It can reach the insulation temperature of 80℃. It is not easy to break, and very convenient to plug and remove.