Now let’s move onto the X Axis Switch. Put an M5
“drop in T nut” into the backside of the X Axis Rail,
close to the Right Frame Piece, as shown in the picture
to the right. Now install the X Axis Homing Switch just
like you did the Y Axis Homing switch. Take a look at
the picture to the right and ensure that yours looks like
this. Just like with the other switch, you need to loosen
the M5x8 screw that mounts the Homing Switch Plate
to the rail and slide the drop in T nut left or right so
that the stud protruding out of the back of the X Axis
bearing Plate engages the switch.
The homing switch kit comes with six connectors and
six lengths of wire. Three of the wires have a small 2
terminal connector for the controller end. The open
end of these must have the connectors crimped or
soldered onto the wires.
When you connect these, one connector should be
on the “COMM” terminal and the other should be on
the “NO” (stands for “normally open”) terminal of the
switch. Plug the other end into the stepper driver
shie
ld. You’ll notice the right side of the driver board
has a section for “End Stops.” Plug Z into “Z+”, Y into
“Y+”, and X into “X+”. When looking at the stepper
driver shield, the
RED
wire goes to the
LEFT
. Refer to
the supplemental homing instructions for more specifics
on the wiring.
FRAME RIGIDITY UPGRADE INSTALLATION (only
if you ordered this upgrade)
The Rigidity Upgrade includes two extra V Wheels for
the X Axis Bearing Plate as well as three threaded rods
to strengthen the frame. You should have installed the
two extra V Wheels on the X Axis Bearing Plate when
you built that plate. You will install the three threaded
rods to strengthen the frame now. Although the rods
are small, they are actually quite strong along the axis
of the rod when brought into tension.
You MUST put an M5 washer between the head of this
M5x12 screw and the switch plate or the screw will bottom
out and you will never get the plate tightened down
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