![]() I had to extend the mosfet board control wire to get it routed the way I wanted it.ĥ) I found the bed temp was pretty close when measured using a digital IR temp gun. There is not much space in there for the new system. Spend some time to comb out the wires and detach, untangle and reattach as necessary to get the package right. It then attaches with 2 of the original Melzi board screws to the chassis. This is a good time to print out the adapter bracket as a test.Ĥ) I used small wire ties, not screws, to attach the Ramps/Mega and the Mosfet boards to Matt's adapter bracket. Also, you must connect 12VDC from the power supply to both sets of 12V ramps board input terminals as they feed separate board circuits. Not sure if that was my fault or if the silk screening on the Ramps board is wrong. is on the left) and the extruder motor's E0 leads. I found I had to reverse one of the Z motor's leads (top connector when D8, etc. I replaced almost all of the Melzi connectors with Dupont except a few Melzis that went on clean with lots of room.ģ) If you are comfortable working around open AC line voltage connections, test the whole thing before putting the boards into the chassis. Load the firmware to the Mega board using your PC before attaching the Ramps board.Ģ) Dupont crimps were a bit uncrimped at the wire insulation tangs and needed to be scrunched a bit with needle nose pliers to allow free insertion all the way into the Dupont connector shells. Put Mark's 'configuration.h' file in its place before uploading the firmware to the Mega board. Step 3: Install Notesġ) Unzip the Marlin firmware and rename the 'configuration.h' file to something else like 'configurationold.h' or better yet, move it to another directory. I used an SD extension cable to get it out the back of the chassis and on top where it is easy to access. The SD card slot is on the side of the Longruner LCD display and inaccessible when mounted in the Monoprice chassis. ![]() ![]() There really is no room to add a decent heat sink, thus, the mosfet board solution. I'm using the Hot Bed Mosfet board because the Longruner Ramps mosfet, although 60A rated, does not have a heat sink and runs uncomfortably hot. The Internet is a better source than the CD that comes with the Longruner kit. I'll let you find the wiring diagrams, Marlin firmware and the Arduino IDE firmware loader app on your own. Instructions for mechanical disassembly, reassembly and Dupont crimping instructions can be found here:ģD files for Matt's Ramps 1.4 mounting adapter bracket can be found here:Ī customized Marlin firmware "configuration.h" file for the Maker Select V2 can be found here.
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