Hi Gene,
One thing to mention about your printer that seems to have been missed:
The USB connector... when you plug a usb cable between your PC and the
printer (usually micro) USB connector, the printer looks like a serial
port device to the PC.
Using a program such as repetier-host (https://www.repetier.com/) and
the USB connected printer will allow you direct control of the printer
such as jogging, heater controls etc. The repetier host also lets you
load a gcode file produced by your slicer and to stream the gcode to the
printer over the USB serial line while giving you a 3D progress plot
similar to axis. You dont need to use a raspi and octoprint although
that works well if your development computer is not within USB cable
distance of your printer.
Lots of ways to do things. With using the serial connection, you dont
need to worry about using the sdcard, although I have cursed a few times
when I moved my chair in the middle of a long print job and pulled the
USB cable out!.
The SD card is handy if you set up a room full of printers in production
mode and not bother with computer connections for each printer.
cheers
Lawrence
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