Converting a Monoprice Maker Select V2 to Ramps

MELZI is trash, RAMPS is better. This will help you convert your printer to a sustainable controller.

Similar projects worth following

Because I'm not gonna RMA this damned thing a third time.

View all 7 components

  • X/Y/Z Stops Connectors

    eth0up03/26/2018 at 03:52 0 comments

    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.

  • Wires mapping

    eth0up03/24/2018 at 18:55 0 comments

    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.

  • Research.

    Ramsey Gill03/23/2018 at 06:36 0 comments

    Initial log, video chat session with eth0up, we started looking into other tutorials to jump off from and clean up. This is promising.

View all 3 project logs

  • 1

    Gather components from the list here: components.

  • 2
    Control box/board disassembly

    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.

  • 3
    Power supply labeling

    Here are a couple pics to show you how my PSU was wired and what I labeled:

View all 5 instructions

Enjoy this project?



Hugh-Jass wrote 08/10/2020 at 03:44 point

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.

  Are you sure? yes | no

Mark B. wrote 03/03/2020 at 14:38 point

I was just doing some simple research browsing, not quite ready to dive in yet. Then I got to your glencairn and shit got real. Cheers!

  Are you sure? yes | no

creodor wrote 02/22/2020 at 22:29 point

I just finished this project. It was definitely somewhat involved, but mostly it was time consuming due to all the connector swaps required.

I have my printer fully operational again now, and that includes the latest Marlin firmware configuration files. If anyone is doing this project and has trouble with those files, you can use mine as a reference or starting point:

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.

  Are you sure? yes | no

Reid wrote 03/17/2019 at 02:11 point

Any chance for the Maker Select V2 firmware configuration and details?

  Are you sure? yes | no

derek wrote 02/05/2019 at 00:40 point

Hi there,

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. 

  Are you sure? yes | no

Similar Projects

Does this project spark your interest?

Become a member to follow this project and never miss any updates