Simple tube system for the Drawing machine

thingiverse

These tubes stop BYJ48 cables from getting tangled up in and around moving machine parts. First, extend cables using some soldering and heat-shrink tubing. Aim long at first: roughly X + Y + 40 cm. I chose 7.5mm and 6.5mm Ø tubes, but you can adjust the models to fit your needs (I included FreeCAD files if that's what you use; otherwise, go with STLs). The orientation of STL files isn't ideal for printing, so orient them correctly before! Here's how: 1) Cut BYJ48 cable sockets down to just five bare cables. 2) Extend the cables further by soldering on some extra ones and isolating with heat-shrink tubing. 3) Thread the first tube (Y axis) onto the cables. 4) Pass the cables through the top of the left column in the heart-shaped part, then back up through the right one (check out the picture). Remove two bottom-left screws from the central moving machine part (looking from the back, see the picture), and screw the heart-shaped part into place with slightly longer screws. If necessary, use a temporary screw from the bottom to keep the pulley in place while you remove the first two screws. 5) Thread the second tube (X Axis) onto the cables. 6) Replace two screws on either NEMA motor with slightly longer ones after placing the smoking pipe-shaped part.