Attempting to switch from the DW660 Router out for the MK8 style Extruder I bought from V1 last Fall. Cannot find anything to tell me where to connect the stepper motor on the extruder to the RAMBO 1.4a board. I also don’t know where the Thermistor connects to. Can anyone help?
It looks like you’re running the dual end stop firmaware. Normally the extruder would plug into E0 or E1 but you already have those occupied with your X2 and Y2 steppers.
I think you would have to “regress” to series wired steppers and single end stops to free up a stepper drive.
The schematic @scrounge79 linked does mention 3 extra stepper outputs, but it also mentions that they share pins with max endstop pins, so I’m not sure that’s an option with the dual endstops either. You would need a external stepper drive even if it could be made to work.
It’s is hard to see from my photo, but the right hand side Z motor plug is open. The board had 6 total stepper connections, and my current setup only uses 5. I thought that is where the extruder motor would connect, but the connector provided with the V1 MK8 does not match the connector on the Rambo board. Is this a case where the connector must be replaced? Or does it go somewhere else as @Paradox_Pete indicates. HELP!?!
The second Z is a parallel connection to the first Z. Don’t use that. You can see the drivers though, there are only 5. You can run two motors off of one driver, if you wire them in series. The only thing you lose is the ability to auto square that axis.
You can not easily run Dual endstops and an extruder. You can change one axis back to series wiring and do some firmware changes. I have it pointed out in a few places that it is not possible.
@vicious1, I have the MK8 extruder with the mount and the heated bed from you. Would you like to take them back as a return? Looks like you are out of stock. I plan to go another route now that I know my electronics setup is for CNC routing only.