#Cnc usb controller mk3 4 schematic serial number#
#Cnc usb controller mk3 4 schematic drivers#
#Cnc usb controller mk3 4 schematic driver#

The power supply can be powered using an extension cord. To make sure the signals are extra safe, use shielded cable with three conductors and make sure the shielding is connected to a GND terminal of the USB interface. The gauge of these signal wires can be around 22 or 24 AWG. The gnd terminal on the USB interface should be connected to the CP- and CW.

#Cnc usb controller mk3 4 schematic driver#

The CW on the USB controller should be connected to the CW+ on the driver (this terminal may also be labeled DIR+). The CP terminal on the USB controller should be connected to the CP+ on the driver (this terminal may also be labeled PUL+ or STEP+). Unplug the USB CNC controller from the computer so the stepping motor driver can be connected to the USB controller.

#Cnc usb controller mk3 4 schematic serial number#

The software will show a dialog box that informs you that the CNC controller is plugged in and it is recognized and shows the serial number and the license information so that a license can be purchased from Planet-CNC. This is a status LED to inform you that the controller is functioning properly. A little green LED will be blinking on the USB controller. Make sure that the Planet-CNC software is up and running on the computer before the USB controller is connected. So, the first step is to connect the USB controller to the computer using a USB cable.

#Cnc usb controller mk3 4 schematic drivers#

Imagine having to do that if all three drivers and stepper motors were connected to the USB controller. For instance, if the motor does not turn, you can check the connection from the stepping motor to the stepping motor driver and make sure there is a good connection at each terminal, the correct wires are paired, or inserted into the terminals, and work back to the driver connection to the power supply and work even farther back to the connection from the USB interface to the driver. If the single driver and stepper motor does not work when connected, then there are very few troubleshooting steps that need to be considered. Once these are connected to the USB controller, then the driver and stepper motor can be tested without the added complexity of all of the drivers and stepping motors being wires all at once. To make sure the process of wiring the CNC electronics goes as smooth as possible and there are few complications, I recommend only connecting a single stepper driver and stepper motor. And there is a set of terminals dedicated to limit switch and homing. The USB interface can also accept a keyboard jog panel so the CNC machine can be jogged with a set of push buttons that can be affixed to another part of the CNC machine. If your CNC machine has mist, coolant or a spindle, this USB interface can also control those features. The USB interface can control four (4) axes (four stepping motor drivers and four stepping motors) with axes designations of X, Y, Z and A. I start the video with an introduction to the USB interface and explain the use of the terminals on the USB interface and how it will be connected to a CNC machine.