MakerBot Industries

Also, since you're building a reprap anyway, use the 5D firmware and the 5D wiring for the 4th stepper motor and driver http://www.thingiverse.com/derivative:14949.

The 5D firmware is in the list for update within rep-g under motherboard 1.2.

Note that 3.1 has a bug in that it has z hold turned off by default in the firmware but rep-g starts up with z hold on. In your case, this really won't matter at all if you are using standard threaded rods for the z axis.

Also, if you tell me what threaded rods you use (metric 8mm?) and what drivers (1/8th or 1/16th stepping) and what pulleys you use for X and Y, I can assist with modifying the machine.xml file in rep-g to calibrate the motion for your hardware.

Without extruder board i get a toolhead not found error, but with extruder controller everything looks fine.
I flashed firmware 3.0 on both board, but just to be sure i'll check again tomorrow :)

Yes, i use 8mm rods.
I'm going to use Pololu stepper driver for the extruder (so i think 1/16) and standard CupCake stepper driver for axis (1/8, i suppose).
And about pulleys, i have to check.
Thanks for your help!

RepRap Motherboard v.2 + Stepper Motor Driver v2.3 r1 + Zapp stepper motor
From ReplicatorG 0029 r2
[19:58:39] Motherboard firmware v3.0 ( )
[19:58:40] Toolhead 0: Not found.

With Extruder Controller v2.2 connected
Machine Cupcake Basic ready
Toolhead 0: 1024,0°C
[20:07:04] Motherboard firmware v3.0 ( )
[20:07:04] Toolhead 0: Extruder controller firmware v3.0 (Extruder )
The installed firmware is v3.0 for stepper extruder w/o relays (maybe i chosed the wrong one).
And T5 Timing Belt Pulleys 10 teeth (3 motors) and 26 teeth for Z axis.

Ok, but what I've been trying to get you to do is load the 5D firmware so your machine prints correctly. The old way of running the stepper driver off the extruder controller sucks.

So what you need is the 5D firmware for the motherboard(I know it's in the update list so choose the 3G 5D shield in board type of the firmware update window) and then also update the extruder controller from the ec2.2 menu, the standard (non stepper)but with relays. You must use a relay with the older extruder controller 2.2 or else you will burn it out.

Follow the directions for connecting the extruder stepper driver to the motherboard, and also, very important, use the machine.xml file provided http://www.thingiverse.com/thing:11837
I cannot stress enough you need to follow those directions for success. You will then modify that xml to match your hardware.

I have a question about that as well. You are saying for x and Y T5 with 10 teeth, and then I'm assuming it's a direct drive of the threaded rods for the z axis-in other words 26teeth pulleys on all of them right?

Are your motors 0.9 degrees per step (AKA 400steps/rev) or standard 1.8 degree 200 steps/rev?

And sorry if I'm being pushy, but you'll thank me later if you follow the directions. You will be printing very quickly. I've done the modification you're trying to do many times now. The old way was horrible. This is why i'm trying to get you to skip that mistake and go 5d.

Barry, nice Golf Cart :)

First step
Updated 5D firmware (3G 5D Shield for 3G Hardware)
Tested all 3 axis with machine "3G 5D (RPM) Cupcake (Gen3 XYZ, Mk5/6+Gen4 Extruder)".
Now ReplicatorG Control Panel works properly.

This week-end I'll try to understand 3G 5D Shield, you know i live in Italy and i don't want to wait for a delivery from Makerbot… ;)
If possible i want to use 3 opto endstop v2.1
Sorry for my english, about z axis pulleys check this picture
Motors: The SY42STH47-1684B is 1.8 degrees-per-step has a double shaft and a holding torque of 4.4 Kg-cm (43.15N-cm).

Thanks again, Luca