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An Arduino shield for connecting Grbl to a YooCNC Mach3-style parallel port-based driver
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Grbl shield for CNC 3020/3040 parallel port

[work in progress]

This is an Eagle schematic and layout for connecting the Grbl's default pinout to the usual found on YooCNC-family "Chinese CNC" controller boxes. It is intended for isolation milling onto a single-layer PCB (using wires for the other layer).

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