RATTMMOTOR 3-Axis Update GRBL 1.1f CNC Controller with Emergency and Limit Switch Fuction, CNC Router Engraver Machine GRBL Controller Board with Fan Cooling for CNC Wood Router Machine

How times have changed!! This controller is a complete CNC package on a small well designed board. Be aware!! This board is what is called unbuffered so plugging in or unplugging any part of the connections, especially the Motor should be done with the unit switched off and the power unplugged, after the power indicator lights have gone out! Otherwise, you may cause the board to fail, for good. The pwm output can be used to control motors if the settings are adjusted. (low rpm set to 0 and not 5) if using Candle and Grbl. Also watch current requirements and motor size if using a 3018, you will be running close to the circuit max specs and may need external controllers. Large stepping motors which need separate controllers do not match the outputs provided, and may need to be avoided, as the Arduino type boards are a direct plug in with large controllers.

Works well for the smaller machines but for the moment lacks an emergency stop. I understand this is on the way.

The three prong laser plug is wired backward and the laser will not function...in fact it will destroy your laser. Came with no instructions to cut and splice my harness before plugging it in. My laser is toast. Never again Rattmmotor.

Now I have to figure out how to flash new firmware. Not happy about that!

Tried the FW update for Laser v1.1. still no laser drive. Didn't bother to test the spindle.