Geeetech i3 pro b home position/endstop mod by shawdreamer

Last crawled date: 3 years, 1 month ago

Ive noted with the Geeetech i3 pro b and similar the home position is unusual (least to me anyway), im used to my home position being platform to the front of printer, unlike the geeetech that sends it all the way to the back). Strikes me as very impractical given that you then need to reach through the printer to retrieve your part at end of print.... awkward and tbf probably a little dangerous if theres still heat lingering about the printer, not to mention it'd be a pain if you enclose the printer and need to stretch all the way into the back of the enclosure to get you finished print??, theres also the fact that the X-axis rods could potentially strike a larger print at the end of a job as the Z lowers to home (the build platform is still slightly under the x-axis in stock home position)
a simple way to set the printer so your home position is BUILD PLATFORM FULLY FORWARD and EXTRUDER FULLY LEFT without need to touch firmware,software or reflash the controller.
along with re-positioning the endstop with this part design....
swap the x & y axis stepper motor plugs going into the control board.(your x-axis becomes the front to back bed axis and the left to right extruder axis is now Y-axis)
reverse the wiring going into the y-axis on the control board (the black,green,red,blue colours basically want to now be flipped)
swap the x & y endstop plugs over going into the control board and reposition the x-endstop to the front of the printer in the new part.
If done this way your build platform will now home to front of printer instead of the back and the extruder will return to stock home as usual.
your prints WONT be reversed.
you WONT need to touch any software config files
you WONT need to touch any firmware settings
this is purely a physical way of getting the front home position ive described without effecting the printers ability to function.
the same effect CAN be achieved through software/firmware settings yes (endstop would still need moving obviously) but that can be alot more involved and a little daunting for the newcomers to 3d printing that often chose the prusa range as their first printer and have zero experience with arduino use and altering config. codes.
both left and right variant design included.
part is pretty snug fitting so doesnt shift about to much but a dab of hotglue or a bit of double sided will secure it firmly.
ps....sorry about the "lined" parts shown in pictures, they were done before installing my anti-wobble design and are only really temp till I redo in Black lol