GRBL offline controller, you don't need your board to have a offline interface, and directly connect through USB! It can be compatible with most GRBL control boards.
(Compatible with CH340/CP210X/PL2303)
The interface supports Chinese and English dual language.
You can connect to the control board via XH2.54-6P, or you can directly connect to the USB wire directly on the right.
You can read the file through the card reader, or you can read directly through the Type C interface on the right.