Hi there,
I'm building an i3, it's mostly complete. Electronics are Mega 2560 + ramps 1.4 running marlin. FYI I bought it all as a kit from these people via Amazon. It's been a mixed bag so far, but I'm generally pleased.The printed parts aren't great quality, some of the bits are wired wrong (end stops) and the instructions stop just after the basic frame construction, but all the bits were there, just required a bit of perseverence.
My specific problems:
Running pronterface, I can click the buttons to move the x and y. If I click for small intervals, there is movement. For longer distances, you get a shudder, then a whining noise and that's it. Any ideas?
The Z axis isn't working properly at all. All the steppers came with connectors on, but they are too large to fit two abreast as required on the Z axis. Initially I wired them together directly and connected to one row of four pins out of the available 8 pins.
What I have now is, with one motor connected I can repeat the behaviour seen for x and y (small movement fine, large movement, whine + click), but with both connected, you get some noise, but nothing concrete.
The Z motors are currently disconnected from the shafts, so they are not under load at all.
I've experimented with the order of wires for a single, unloaded Z motor, but nothing helps (Obviously the "bad" orders just don't do anything).
Finally, an easy one. I want to buy some connectors to rewire some parts.I've attached a picture of what I want (borrowed from NextDayRepRap.co.uk). What are they called? The author mentions Molex, but I'm only finding large power supply type connectors when I search for that.
Many thanks in advance.
I'm building an i3, it's mostly complete. Electronics are Mega 2560 + ramps 1.4 running marlin. FYI I bought it all as a kit from these people via Amazon. It's been a mixed bag so far, but I'm generally pleased.The printed parts aren't great quality, some of the bits are wired wrong (end stops) and the instructions stop just after the basic frame construction, but all the bits were there, just required a bit of perseverence.
My specific problems:
Running pronterface, I can click the buttons to move the x and y. If I click for small intervals, there is movement. For longer distances, you get a shudder, then a whining noise and that's it. Any ideas?
The Z axis isn't working properly at all. All the steppers came with connectors on, but they are too large to fit two abreast as required on the Z axis. Initially I wired them together directly and connected to one row of four pins out of the available 8 pins.
What I have now is, with one motor connected I can repeat the behaviour seen for x and y (small movement fine, large movement, whine + click), but with both connected, you get some noise, but nothing concrete.
The Z motors are currently disconnected from the shafts, so they are not under load at all.
I've experimented with the order of wires for a single, unloaded Z motor, but nothing helps (Obviously the "bad" orders just don't do anything).
Finally, an easy one. I want to buy some connectors to rewire some parts.I've attached a picture of what I want (borrowed from NextDayRepRap.co.uk). What are they called? The author mentions Molex, but I'm only finding large power supply type connectors when I search for that.
Many thanks in advance.