Hello. I've assembled a Prusa Mendel with RAMPS 1.4 but when I run this test code [reprap.org] nothing responds except the LED on the board. The board is currently only powered by USB. My main question is can the printer be powered through USB alone or is a separate 12 V source essential for the printer to operate (hence why my test failed). I can't seem to find an explicit answer for this, although from what I can tell USB can't supply the power that a 12 V / 5+ A source would. On a related note, I don't know what kind of connection is on the board for power, so I'm not sure what kind of adapter I would need to connect the board to a power supply.
I'm new to 3d printing and only have limited experience with electronics so by all means talk to me like I don't know anything. Thanks in advance for any help.
I'm new to 3d printing and only have limited experience with electronics so by all means talk to me like I don't know anything. Thanks in advance for any help.