You will need PlanetCNC software for the USB breakout board and when plugging in the USB the computer should automatically recognize the board, however you can go into device manager to see if the USB terminal is working correctly.
The parallel breakout board; the USB is not a connection terminal rather than a power source, and the parallel port will be the communication terminal.
The items you will need for a water cooled spindle would be: water pump, silicon tubing(length desired by customer), a extension cord(from a hardware store(orange))(1 same gauge wire/length as extension cord).
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I have the usb breakout board https://buildyourcnc.com/Item/electronicsAndMotors-electronic-component-USB-Controller-Breakout and need to run the A axis as a slave the software greys out the box how do I fix this?