I’m confused about the other connections. Does everything else that isn’t connected just get matched up to it’s color. Example: Coil 1 Ramps pin 2 (green) connects to stepper 1 - pin 2 (green)? Then Ramps pin A (blue) connects to Stepper 1 and 2 pin 3 (blue)?
Your diagram should be correct…but that is for each side. Every stepper needs all 4 connections. The diagram is split up for clarity. I do sell pre-made wires.
Really regret not buying a harness among other pieces from you. I made an ugly splitter and now both steppers on each axis move when I tell them to, but it’s not smooth. It’s jerky and jittery. I’ve adjusted my drivers [A4988] from around 640 to 560 for my 1.4amp limited steppers. I also edited the config to cut the steps down in half. Is there anything else I’m missing, or is this just bad wiring?
Edit: I tried plugging a single wire directly into a motor and it jitters without spinning.
Hey, Barry. Thanks for the reply. I tried connecting a single stepper to the X axis on my Ramps board using a single unmodified wire. It behaves the same as the steppers on the wire harness I created. No chance that this could be a result of one of these settings in marlin?:
Yup, all three jumpers. I was just moving the X axis a few mm at a time using the interface on the Ramps board. Now I installed repetierhost on a laptop and connected it to my ramps via usb and tried moving it that way and still, same result. Jittery steppers.
You have a stepper directly connected to the board, no funky wiring, all three jumpers, using repetier host, steps cut in half in the firmware and flashed successfully.
The only thing left is to test each stepper, in each of the ports. Powering off between moving them. If that doesn’t work, Something has to be faulty or one of the above steps isn’t correct. Are you sure you have 1.8 degree steppers? The ramps is correctly powered? A few pictures are worth a million guesses.