Currently I got the Laser working but as the first step I would like to add this additional PSU to power the current board and stepper driver. Can someone point me in the correct direction where I can see a wiring diagram for the 4 pins as I found that 3 of the wires are 24V, 5V and GND while the 4th is the Laser On.
Why do you want to add another PSU?..the stock setup has enough power.
@funinthefalls A few reasons, firstly to isolate the board from the laser PSU. Second is to hopefully improve stability of the LiHuiYu board as I am getting USB disconnections running LaserDrw and CorelLaser. (Read about the laos board and some stablity of the laser PSU output) And finally, first step in converting the LIHUIYU board to an open source board.