Wanhao/Maker Select i3 Ramps Conversion for OSOYOO Ramps Kit with 2.8" Touch Screen

thingiverse

Updates: 2/17/2017 I made a tweak to the LCD adapter to allow printing without support material. 2/18/2017 I changed the Melzi to Ramps adapter so that the power cables are better aligned with the PSU and the Fan is better positioned to cool the stepper drivers. 2/26/2017 added a USB socket plug so you can access the main RAMPS USB connector. This is a project I did based on the Osoyoo Ramps kit that I bought from Amazon for $69:https://www.amazon.com/OSOYOO-Controller-Combination-MEGA2560-RAMPS1-4/dp/B01J9ZVPZU/ *A few have reported that the above package is no longer available. Here is a second source that looks identical:https://www.amazon.com/gp/product/B01JA5EQJG With this above link you'll need to buy the LCD board and the RAMPS board separately. They provide a link to the same osoyoo page that I used - so this is a good sign. This is specifically for converting a Wanhao Duplicator i3 or MonoPrice Maker Select V2 i3 to Ramps with touch screen using the kit linked above. The parts that I made include: MKSTFT28_Adapter05.stl - this is the mount for the LCD touch screen, USB, and Card Reader. Melzi2RampsAdapter02.stl - this is an adapter that allows you to use the existing screws that held the Melzi board in place to hold the new RAMPS board instead. 4mm_spacer.stl - Use these between 20mm stand-offs from the i3 enclosure and the LCD board. (optional). Print 4 of these. (takes about 5 minutes to print 4). USBPort_for_MP_Case01.stl is an optional part. Parts needed: 4 qty 15mm M3 screws for LCD 4 qty 20MM M3 standoffs (Vinyl or Brass). 8 qty 10MM M3 screws for Melzi to RAMPS mount 4 qty 10MM or 15MM standoffs to raise RAMPS board. Assembly: Print the 3 parts attached. Disassemble your Metal enclosure and remove the Melzi board. Carefully label your connections before pulling them from the Melzi board. Before full assembly - Configure and Test the Ramps board (get that working first). Guide is here: http://osoyoo.com/2016/06/30/mks-1-4-3d-printer-board-marlin-firmware-installation-guide/ Ramps Board - Do this after programming and testing your Ramps board with a test print. I added a wiring diagram to help. Add 10 to 15mm standoffs to the Ramp board holes (the 4 center most holes) on the printed Melzi to Ramps adapter. Screw your Ramps board onto the adapter standoffs. I highly recommend using Vinyl M3 screws to prevent shorts from metal screws. Screw your Melzi to Ramps board to the 4 Melzi mount screw holes in the metal enclosure. LCD Mount - alter to suit your needs. Connect your LCD to Ramps ribbon Cable to the LCD board only at this time. Drill out the four LCD inner mounting holes on your Metal enclosure so that the holes come through the top of the enclosure. Screw 4 20MM M3 standoffs into the holes you drilled in step 1, pointing upward. Seat 4 15MM M3 Screws into the top of the printed MKSTFT28 Adapter part until they protrude about 5-6mm from the bottom. Put your LCD board on these screws - the LCD should nicely align with the face of the adapter. Slide the printed 4mm spacers onto each of the 4 screws protruding from the bottom of the Adapter and LCD board's holes. Align the TFT28 LCD Board and Adapter onto the M3 standoff screws and tighten them lightly until the LCD assembly is firmly attached to the Metal enclosure. Don't over tighten. Connect the LCD ribbon cable to the Ramps board. Test the system then power off and assemble the enclosure. If you are stuck configuring your Ramps configuration.h file I have posted mine here for your reference: http://www.thingiverse.com/groups/i3/topic:11636 Also, if the LCD does not seem to be communicating properly with the RAMPS board, run the LCD firmware update procedure here: http://osoyoo.com/2016/07/25/mks-tft-2-8-touch-screen/ Optional - access to USB on RAMPS board. The USB port on the ramps board is inside the metal enclosure and with a ~22x23.5 rectangular hole in the side you can access it. Involves cutting the case - don't do this if you want to keep the original parts intact. My method: Eye up the location of the USB socket on the ramps connector and mark the case with a sharpie (please carefully measure this before you cut. Remove all electronics from the enclosure for safe drilling (You don't want metal shavings on your electronics). Drill 4 holes ~7 to 8mm in diameter at the corners of the square you measured in step one. They should be spaced 22mm apart horizontally and 23.5mm apart vertically. Use a jigsaw or hacksaw with a metal cutting blade to cut a straight line between each hole. It should open up to a rectangle once all 4 lines are cut. Pop in the printed "USBPort_for_MP_Case01.stl" part. The fit should be a snug pressure fit. Use Hot glue if the fit is loose. This conversion pairs nicely with this backplate for 80mm fans: http://www.thingiverse.com/thing:2137022 Post-Printing Tip! - Pull the little heatsinks off on your Melzi board and place them on the Ramps board's stepper drivers.