2/13/2023 0 Comments Usb port cnc motion boardEither device plugs in between your motor driver and your computer to convert Mach3 commands to pulses for the motor drivers. The SmoothStepper is offered in two versions, USB and Ethernet. The motion controller card I decided to buy is the SmoothStepper Motion Control board from. When you also add in the fact that Mach4 will be released soon and will require a motion control card to work, it seems a dedicated motion control device was the only logical way to bring my CNC machine into the 21st century. Mach3 needs to be able to control the computers interrupt system at a low level which USB simply does not allow. USB converters by themselves don’t work with Mach3. You either need to purchase a separate Motion Control add-on card for the computer or you had to try to make a USB adapter work. The old CNC computer used a parallel port (printer port) for Motion Control. ![]() Most new computers don’t have a printer port anymore so it is getting difficult to find a replacement computer. ![]() I recently had a hard drive controller failure on my CNC computer and had to decide to either replace the motherboard or get a new computer.
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