38 SERVO 11.2016
Building the
KReduCNC
Electronics
In this installment, I will
show you how to connect the
controller to your stepper
motors in order to get your
CNC moving for the first
time. This temporary hookup
will be used to tune the
machine before we attach the
table.
By Michael Simpson
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find any associated files
and/or downloads at
www.servomagazine.com/index.
php/magazine/article/November
2016_Build-CNC-Electronics.
Electronic Components
You will need the components shown in Figures 1, 2,
and 3 to complete this installment. These consist of the
following:
• SainSmart three-axis controller
• 12 volt/five amp power supply
• Power cord
You will also need two 1/4” thick plywood panels 7-
7/8” x 15-3/4”. One of the panels will need a notch cut
into one end as shown in Figures 4 and 5. These are used
to temporarily hold the controller board and the power
supply. Later, you will install these panels inside your
KReduCNC frame.
Links to the various components I used will be provided
on my KReduCNC support pages, as well as the drawing
files for the panels.
Hardware
In addition to the drive components listed above, the
following hardware fasteners will be needed for
the hookup:
• Six #6-32 x 1” machine screws
• Eight #6 washers
• Six #6 internal tooth lock washers
• 10 #6-32 hex nuts
Figure
1
Figure 2
Figure 3
