I found a trio of 3-pin JST connectors laying around, so I labeled the "S" and "-" wires of the (stock) 2-pin X/Y/Z stop connectors, then popped the pins out and seated them into the 3-pin connectors. This will allow the stops to cleanly connect to the MKS Gen V1.4 board.
I'll need a crimp tool and some blank connectors to finish the remaining connector swaps, parts arrive Wednesday.
Separated the wires from their harness/zipties, labeled them, and noted where they'd go to on the MKS Ramps side. Some connectors won't be compatible and will require crimping, others will work as they are.
Disassemble the Maker Select V2 control box and LABEL ALL WIRES as you disconnect them from the stock Melzi board.
Be sure to check the underside of the Melzi board for pin mappings:
I like to use standard masking tape for temporary ID tags.
Before we embark on this journey into rewiring, double check to make sure everything is labeled accurately. Now might also be a good time to grab a sip of your favorite brown liquid.
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Power supply labeling
Here are a couple pics to show you how my PSU was wired and what I labeled:
i am considering on taking this approach as i dont wanna pay $99 for a replacement mainboard. But am wondering if a MKS GEN L V2.1 will work? And, if a mosfet can be installed as well? Help with this is much appreciated.
I'm willing to provide some assistance if someone else tries this swap and has issues, but this is not a site I check regularly so there will definitely be a delay in responses.
I'm having some odd issues on this. I also have a monoprice select v2 and i've gone through this tutorial, but after reading up on a bunch of different wiring segments, it seems that the same board linked here is asking for A1 A2, B1, B2 wiring on the motors. If I wire them up, they /kind of/ work that way.
However, what i'm seeing is that they will only go one way on an axis, unless I hold down the limit switch and then tell it to move, in which case it will go both ways. Do you have the code you used for your marlin setup? I noticed you had mentioned you would add that later, I was curious what you did to get your MP printer working on this. I'm down to having the lcd and selection working, but understanding the limit switch stuff and the configuration is a bit ... odd.
i am considering on taking this approach as i dont wanna pay $99 for a replacement mainboard. But am wondering if a MKS GEN L V2.1 will work? And, if a mosfet can be installed as well? Help with this is much appreciated.