I would like to give everyone a very BIG caution about stepper motors. Stepper motors can act as generators. If you spin them when the power to the system is off, the steppers can generate high voltages. If you grab the print carriage with the power off and quickly move it, the potential exists to damage the stepper driver chips.
In other words don’t move the print carriage in either X or Y direction by hand with the power off. If you do make sure you do it very slowly. Voltage output appears to be a function of speed. A faster move can or will generate higher voltages.
adande
22
If the “twitch” also makes a loud annoying noise, I had the same thing. You need to take off the right side of the Makerbot. Once you do this there is a metal bar holding wires back. If you take this bar out and let the wires dangle it should be fixed. My wires were so messed up that I had to cut them and rewire. If this is your problem i can send pictures to help.
PDXDDD
23
GAAAAH!!! I was very happy when Makerbot said they would ship my parts two weeks ago but at first I only received one of the parts I asked for. so I asked for the part again. they shipped the wrong part an end stop wiring harness and not the extruder harness. I think it would be much easier if Makerbot just shared the wiring Bill of materials for the machines they sell to make the support easier. just think of all the printing I could have been doing and filament I would be purchasing… Rep 2x been down for over 6 weeks now waiting on wiring parts.
Also this is the 3rd time i’ve replaced the harness, and basically I only use one side of the machine so that means this connection has failed six times. also I have received the end stop cable twice now when asking for the Extruder harness!!! who wants one?
