GRBL 1.1 A4988 4 Axis Stepper Motor Control Board with Isolation USB Driver Board for CNC Laser Engraverd Support 1-10V VFD and 48V 500W DC Spindle

This board does exactly what you want it to do and more. If you're tying to use your 4th A Axis without issues, this board is the one you're looking for. Where others can only mimic the A axis, this one gives you full control. Plus it has a lot of additional features and ports for fans, etc.. It's got GBRL 1.1 already flashed so no need to mess with that install. It has a red indicator light to let you know it's powered.You still need to set your voltage on the A4988's (control boards) and make sure you plug steppers into the boards before you power the unit, otherwise you can say goodbye to the A4988's.Note, if you A axis is moving slow while the others are working just fine, it's not the board, it's the GRBL settings for the A axis, just match the A axis ($103, $113, $123, and $133) the same as your others or as desired.The only complaint I have is that it's larger than it needs to be, but I still give it five stars because I knew that going in.

Works as advertised

just installed the board and everything seems to work ok except the 3 pin laser port does not work.I purchased the control board to use on a laser project. I will need to return the board for broken item.I can not give a high rating on the board at this time. I used the wiring diagram list on Amazon sale pictures

Not sure if I caused it or not but it stopped working after I hooked up my laser. It had been working great with just the drives running. Once I added the laser it stopped working. No amount of effort got it going again. But I did like the features it had.

Pro: Worked great, as wanted and needed.Con: Stepper board quit relatively quickly. Glad it shipped with an extra one.

Didn't work. Killed my laser, have to get a new laser now. Returned.

This is the second controller I’ve tried. Neither one works correctly. There is constant voltage at the FCES pins which is supposed to be variable 0-10v. I checked multiple times that I’m connected to the correct pins and not connected to the fan pins. I chose this controller specifically for the VFD pins.

Instructions said 12 to 24 volts poer supple. Used a low amp 24 volt and it cooked.Replaced cooked part and tried 12 volts. Cooked again. Get a better card as this one seems to be junk.