Wow. That looks terrific!
You need to connect to a host program to send gcode commands to the machine. I use Repetier Host in 'expert' mode but I know lots of people use Pronterface. They are both free. Just Google them.
In terms of what to adjust, if you run an M666 L it will list the available things you can tweak directly from the host and then save back to EEPROM with M500.
Run an auto calibration with G30 A and it will pretty much set itself up. I normally give it a bit of help by roughly calibrating by adjusting the end stop offsets (with M666 X, Y and Z) and the Z height ( with M666 H)
The part cooling fan connects to D9 on RAMPS. If you have a separate hot-end cooling fan alla E3D V6 then wire it direct to your 12V supply. The second power in connector is for a heated bed psu.
Good luck
Andy
You need to connect to a host program to send gcode commands to the machine. I use Repetier Host in 'expert' mode but I know lots of people use Pronterface. They are both free. Just Google them.
In terms of what to adjust, if you run an M666 L it will list the available things you can tweak directly from the host and then save back to EEPROM with M500.
Run an auto calibration with G30 A and it will pretty much set itself up. I normally give it a bit of help by roughly calibrating by adjusting the end stop offsets (with M666 X, Y and Z) and the Z height ( with M666 H)
The part cooling fan connects to D9 on RAMPS. If you have a separate hot-end cooling fan alla E3D V6 then wire it direct to your 12V supply. The second power in connector is for a heated bed psu.
Good luck
Andy